The page allocation performance requirements of different workloads
are often different. So, we need to tune the PCP (Per-CPU Pageset)
high on each CPU automatically to optimize the page allocation
performance.
The list of patches in series is as follows,
[1/9] mm, pcp: avoid to drain PCP when process exit
[2/9] cacheinfo: calculate per-CPU data cache size
[3/9] mm, pcp: reduce lock contention for draining high-order pages
[4/9] mm: restrict the pcp batch scale factor to avoid too long latency
[5/9] mm, page_alloc: scale the number of pages that are batch allocated
[6/9] mm: add framework for PCP high auto-tuning
[7/9] mm: tune PCP high automatically
[8/9] mm, pcp: decrease PCP high if free pages < high watermark
[9/9] mm, pcp: reduce detecting time of consecutive high order page freeing
Patch [1/9], [2/9], [3/9] optimize the PCP draining for consecutive
high-order pages freeing.
Patch [4/9], [5/9] optimize batch freeing and allocating.
Patch [6/9], [7/9], [8/9] implement and optimize a PCP high
auto-tuning method.
Patch [9/9] optimize the PCP draining for consecutive high order page
freeing based on PCP high auto-tuning.
The test results for patches with performance impact are as follows,
kbuild
======
On a 2-socket Intel server with 224 logical CPU, we run 8 kbuild
instances in parallel (each with `make -j 28`) in 8 cgroup. This
simulates the kbuild server that is used by 0-Day kbuild service.
build time lock contend% free_high alloc_zone
---------- ---------- --------- ----------
base 100.0 14.0 100.0 100.0
patch1 99.5 12.8 19.5 95.6
patch3 99.4 12.6 7.1 95.6
patch5 98.6 11.0 8.1 97.1
patch7 95.1 0.5 2.8 15.6
patch9 95.0 1.0 8.8 20.0
The PCP draining optimization (patch [1/9], [3/9]) and PCP batch
allocation optimization (patch [5/9]) reduces zone lock contention a
little. The PCP high auto-tuning (patch [7/9], [9/9]) reduces build
time visibly. Where the tuning target: the number of pages allocated
from zone reduces greatly. So, the zone contention cycles% reduces
greatly.
With PCP tuning patches (patch [7/9], [9/9]), the average used memory
during test increases up to 18.4% because more pages are cached in
PCP. But at the end of the test, the number of the used memory
decreases to the same level as that of the base patch. That is, the
pages cached in PCP will be released to zone after not being used
actively.
netperf SCTP_STREAM_MANY
========================
On a 2-socket Intel server with 128 logical CPU, we tested
SCTP_STREAM_MANY test case of netperf test suite with 64-pair
processes.
score lock contend% free_high alloc_zone cache miss rate%
----- ---------- --------- ---------- ----------------
base 100.0 2.1 100.0 100.0 1.3
patch1 99.4 2.1 99.4 99.4 1.3
patch3 106.4 1.3 13.3 106.3 1.3
patch5 106.0 1.2 13.2 105.9 1.3
patch7 103.4 1.9 6.7 90.3 7.6
patch9 108.6 1.3 13.7 108.6 1.3
The PCP draining optimization (patch [1/9]+[3/9]) improves
performance. The PCP high auto-tuning (patch [7/9]) reduces
performance a little because PCP draining cannot be triggered in time
sometimes. So, the cache miss rate% increases. The further PCP
draining optimization (patch [9/9]) based on PCP tuning restore the
performance.
lmbench3 UNIX (AF_UNIX)
=======================
On a 2-socket Intel server with 128 logical CPU, we tested UNIX
(AF_UNIX socket) test case of lmbench3 test suite with 16-pair
processes.
score lock contend% free_high alloc_zone cache miss rate%
----- ---------- --------- ---------- ----------------
base 100.0 51.4 100.0 100.0 0.2
patch1 116.8 46.1 69.5 104.3 0.2
patch3 199.1 21.3 7.0 104.9 0.2
patch5 200.0 20.8 7.1 106.9 0.3
patch7 191.6 19.9 6.8 103.8 2.8
patch9 193.4 21.7 7.0 104.7 2.1
The PCP draining optimization (patch [1/9], [3/9]) improves
performance much. The PCP tuning (patch [7/9]) reduces performance a
little because PCP draining cannot be triggered in time sometimes.
The further PCP draining optimization (patch [9/9]) based on PCP
tuning restores the performance partly.
The patchset adds several fields in struct per_cpu_pages. The struct
layout before/after the patchset is as follows,
base
====
struct per_cpu_pages {
spinlock_t lock; /* 0 4 */
int count; /* 4 4 */
int high; /* 8 4 */
int batch; /* 12 4 */
short int free_factor; /* 16 2 */
short int expire; /* 18 2 */
/* XXX 4 bytes hole, try to pack */
struct list_head lists[13]; /* 24 208 */
/* size: 256, cachelines: 4, members: 7 */
/* sum members: 228, holes: 1, sum holes: 4 */
/* padding: 24 */
} __attribute__((__aligned__(64)));
patched
=======
struct per_cpu_pages {
spinlock_t lock; /* 0 4 */
int count; /* 4 4 */
int high; /* 8 4 */
int high_min; /* 12 4 */
int high_max; /* 16 4 */
int batch; /* 20 4 */
u8 flags; /* 24 1 */
u8 alloc_factor; /* 25 1 */
u8 expire; /* 26 1 */
/* XXX 1 byte hole, try to pack */
short int free_count; /* 28 2 */
/* XXX 2 bytes hole, try to pack */
struct list_head lists[13]; /* 32 208 */
/* size: 256, cachelines: 4, members: 11 */
/* sum members: 237, holes: 2, sum holes: 3 */
/* padding: 16 */
} __attribute__((__aligned__(64)));
The size of the struct doesn't changed with the patchset.
Changelog:
v3:
- Fix the per-CPU data cache slice size calculation in [3/9]. Thanks
Mel for pointing this out!
- Fix a PCP->high decrement amount issue when free pages become low.
- Dropped original "[9/10] mm, pcp: avoid to reduce PCP high
unnecessarily", because of no enough performance data to support it.
- Add some comments per Mel's comments. Thanks!
- Add a Kconfig option for max batch scale factor in [4/9] per Mel's
comments. Thanks!
- Collected Acked-by. Thanks Mel!
v2:
- Fix the kbuild test configuration and results. Thanks Andrew for
reminding on test results!
- Add document for sysctl behavior extension in [06/10] per Andrew's comments.
Best Regards,
Huang, Ying
In commit f26b3fa04611 ("mm/page_alloc: limit number of high-order
pages on PCP during bulk free"), the PCP (Per-CPU Pageset) will be
drained when PCP is mostly used for high-order pages freeing to
improve the cache-hot pages reusing between page allocation and
freeing CPUs.
But, the PCP draining mechanism may be triggered unexpectedly when
process exits. With some customized trace point, it was found that
PCP draining (free_high == true) was triggered with the order-1 page
freeing with the following call stack,
=> free_unref_page_commit
=> free_unref_page
=> __mmdrop
=> exit_mm
=> do_exit
=> do_group_exit
=> __x64_sys_exit_group
=> do_syscall_64
Checking the source code, this is the page table PGD
freeing (mm_free_pgd()). It's a order-1 page freeing if
CONFIG_PAGE_TABLE_ISOLATION=y. Which is a common configuration for
security.
Just before that, page freeing with the following call stack was
found,
=> free_unref_page_commit
=> free_unref_page_list
=> release_pages
=> tlb_batch_pages_flush
=> tlb_finish_mmu
=> exit_mmap
=> __mmput
=> exit_mm
=> do_exit
=> do_group_exit
=> __x64_sys_exit_group
=> do_syscall_64
So, when a process exits,
- a large number of user pages of the process will be freed without
page allocation, it's highly possible that pcp->free_factor becomes >
0. In fact, this is expected behavior to improve process exit
performance.
- after freeing all user pages, the PGD will be freed, which is a
order-1 page freeing, PCP will be drained.
All in all, when a process exits, it's high possible that the PCP will
be drained. This is an unexpected behavior.
To avoid this, in the patch, the PCP draining will only be triggered
for 2 consecutive high-order page freeing.
On a 2-socket Intel server with 224 logical CPU, we run 8 kbuild
instances in parallel (each with `make -j 28`) in 8 cgroup. This
simulates the kbuild server that is used by 0-Day kbuild service.
With the patch, the cycles% of the spinlock contention (mostly for
zone lock) decreases from 14.0% to 12.8% (with PCP size == 367). The
number of PCP draining for high order pages freeing (free_high)
decreases 80.5%.
This helps network workload too for reduced zone lock contention. On
a 2-socket Intel server with 128 logical CPU, with the patch, the
network bandwidth of the UNIX (AF_UNIX) test case of lmbench test
suite with 16-pair processes increase 16.8%. The cycles% of the
spinlock contention (mostly for zone lock) decreases from 51.4% to
46.1%. The number of PCP draining for high order pages
freeing (free_high) decreases 30.5%. The cache miss rate keeps 0.2%.
Signed-off-by: "Huang, Ying" <[email protected]>
Acked-by: Mel Gorman <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Christoph Lameter <[email protected]>
---
include/linux/mmzone.h | 12 +++++++++++-
mm/page_alloc.c | 11 ++++++++---
2 files changed, 19 insertions(+), 4 deletions(-)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 4106fbc5b4b3..19c40a6f7e45 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -676,12 +676,22 @@ enum zone_watermarks {
#define high_wmark_pages(z) (z->_watermark[WMARK_HIGH] + z->watermark_boost)
#define wmark_pages(z, i) (z->_watermark[i] + z->watermark_boost)
+/*
+ * Flags used in pcp->flags field.
+ *
+ * PCPF_PREV_FREE_HIGH_ORDER: a high-order page is freed in the
+ * previous page freeing. To avoid to drain PCP for an accident
+ * high-order page freeing.
+ */
+#define PCPF_PREV_FREE_HIGH_ORDER BIT(0)
+
struct per_cpu_pages {
spinlock_t lock; /* Protects lists field */
int count; /* number of pages in the list */
int high; /* high watermark, emptying needed */
int batch; /* chunk size for buddy add/remove */
- short free_factor; /* batch scaling factor during free */
+ u8 flags; /* protected by pcp->lock */
+ u8 free_factor; /* batch scaling factor during free */
#ifdef CONFIG_NUMA
short expire; /* When 0, remote pagesets are drained */
#endif
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 95546f376302..295e61f0c49d 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2370,7 +2370,7 @@ static void free_unref_page_commit(struct zone *zone, struct per_cpu_pages *pcp,
{
int high;
int pindex;
- bool free_high;
+ bool free_high = false;
__count_vm_events(PGFREE, 1 << order);
pindex = order_to_pindex(migratetype, order);
@@ -2383,8 +2383,13 @@ static void free_unref_page_commit(struct zone *zone, struct per_cpu_pages *pcp,
* freeing without allocation. The remainder after bulk freeing
* stops will be drained from vmstat refresh context.
*/
- free_high = (pcp->free_factor && order && order <= PAGE_ALLOC_COSTLY_ORDER);
-
+ if (order && order <= PAGE_ALLOC_COSTLY_ORDER) {
+ free_high = (pcp->free_factor &&
+ (pcp->flags & PCPF_PREV_FREE_HIGH_ORDER));
+ pcp->flags |= PCPF_PREV_FREE_HIGH_ORDER;
+ } else if (pcp->flags & PCPF_PREV_FREE_HIGH_ORDER) {
+ pcp->flags &= ~PCPF_PREV_FREE_HIGH_ORDER;
+ }
high = nr_pcp_high(pcp, zone, free_high);
if (pcp->count >= high) {
free_pcppages_bulk(zone, nr_pcp_free(pcp, high, free_high), pcp, pindex);
--
2.39.2
In commit f26b3fa04611 ("mm/page_alloc: limit number of high-order
pages on PCP during bulk free"), the PCP (Per-CPU Pageset) will be
drained when PCP is mostly used for high-order pages freeing to
improve the cache-hot pages reusing between page allocating and
freeing CPUs.
On system with small per-CPU data cache slice, pages shouldn't be
cached before draining to guarantee cache-hot. But on a system with
large per-CPU data cache slice, some pages can be cached before
draining to reduce zone lock contention.
So, in this patch, instead of draining without any caching,
"pcp->batch" pages will be cached in PCP before draining if the
size of the per-CPU data cache slice is more than "3 * batch".
In theory, if the size of per-CPU data cache slice is more than "2 *
batch", we can reuse cache-hot pages between CPUs. But considering
the other usage of cache (code, other data accessing, etc.), "3 *
batch" is used.
Note: "3 * batch" is chosen to make sure the optimization works on
recent x86_64 server CPUs. If you want to increase it, please check
whether it breaks the optimization.
On a 2-socket Intel server with 128 logical CPU, with the patch, the
network bandwidth of the UNIX (AF_UNIX) test case of lmbench test
suite with 16-pair processes increase 70.5%. The cycles% of the
spinlock contention (mostly for zone lock) decreases from 46.1% to
21.3%. The number of PCP draining for high order pages
freeing (free_high) decreases 89.9%. The cache miss rate keeps 0.2%.
Signed-off-by: "Huang, Ying" <[email protected]>
Acked-by: Mel Gorman <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Sudeep Holla <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Christoph Lameter <[email protected]>
---
drivers/base/cacheinfo.c | 2 ++
include/linux/gfp.h | 1 +
include/linux/mmzone.h | 6 ++++++
mm/page_alloc.c | 38 +++++++++++++++++++++++++++++++++++++-
4 files changed, 46 insertions(+), 1 deletion(-)
diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c
index 585c66fce9d9..f1e79263fe61 100644
--- a/drivers/base/cacheinfo.c
+++ b/drivers/base/cacheinfo.c
@@ -950,6 +950,7 @@ static int cacheinfo_cpu_online(unsigned int cpu)
if (rc)
goto err;
update_per_cpu_data_slice_size(true, cpu);
+ setup_pcp_cacheinfo();
return 0;
err:
free_cache_attributes(cpu);
@@ -963,6 +964,7 @@ static int cacheinfo_cpu_pre_down(unsigned int cpu)
free_cache_attributes(cpu);
update_per_cpu_data_slice_size(false, cpu);
+ setup_pcp_cacheinfo();
return 0;
}
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 665f06675c83..665edc11fb9f 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -325,6 +325,7 @@ void drain_all_pages(struct zone *zone);
void drain_local_pages(struct zone *zone);
void page_alloc_init_late(void);
+void setup_pcp_cacheinfo(void);
/*
* gfp_allowed_mask is set to GFP_BOOT_MASK during early boot to restrict what
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 19c40a6f7e45..cdff247e8c6f 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -682,8 +682,14 @@ enum zone_watermarks {
* PCPF_PREV_FREE_HIGH_ORDER: a high-order page is freed in the
* previous page freeing. To avoid to drain PCP for an accident
* high-order page freeing.
+ *
+ * PCPF_FREE_HIGH_BATCH: preserve "pcp->batch" pages in PCP before
+ * draining PCP for consecutive high-order pages freeing without
+ * allocation if data cache slice of CPU is large enough. To reduce
+ * zone lock contention and keep cache-hot pages reusing.
*/
#define PCPF_PREV_FREE_HIGH_ORDER BIT(0)
+#define PCPF_FREE_HIGH_BATCH BIT(1)
struct per_cpu_pages {
spinlock_t lock; /* Protects lists field */
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 295e61f0c49d..ba2d8f06523e 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -52,6 +52,7 @@
#include <linux/psi.h>
#include <linux/khugepaged.h>
#include <linux/delayacct.h>
+#include <linux/cacheinfo.h>
#include <asm/div64.h>
#include "internal.h"
#include "shuffle.h"
@@ -2385,7 +2386,9 @@ static void free_unref_page_commit(struct zone *zone, struct per_cpu_pages *pcp,
*/
if (order && order <= PAGE_ALLOC_COSTLY_ORDER) {
free_high = (pcp->free_factor &&
- (pcp->flags & PCPF_PREV_FREE_HIGH_ORDER));
+ (pcp->flags & PCPF_PREV_FREE_HIGH_ORDER) &&
+ (!(pcp->flags & PCPF_FREE_HIGH_BATCH) ||
+ pcp->count >= READ_ONCE(pcp->batch)));
pcp->flags |= PCPF_PREV_FREE_HIGH_ORDER;
} else if (pcp->flags & PCPF_PREV_FREE_HIGH_ORDER) {
pcp->flags &= ~PCPF_PREV_FREE_HIGH_ORDER;
@@ -5418,6 +5421,39 @@ static void zone_pcp_update(struct zone *zone, int cpu_online)
mutex_unlock(&pcp_batch_high_lock);
}
+static void zone_pcp_update_cacheinfo(struct zone *zone)
+{
+ int cpu;
+ struct per_cpu_pages *pcp;
+ struct cpu_cacheinfo *cci;
+
+ for_each_online_cpu(cpu) {
+ pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu);
+ cci = get_cpu_cacheinfo(cpu);
+ /*
+ * If data cache slice of CPU is large enough, "pcp->batch"
+ * pages can be preserved in PCP before draining PCP for
+ * consecutive high-order pages freeing without allocation.
+ * This can reduce zone lock contention without hurting
+ * cache-hot pages sharing.
+ */
+ spin_lock(&pcp->lock);
+ if ((cci->per_cpu_data_slice_size >> PAGE_SHIFT) > 3 * pcp->batch)
+ pcp->flags |= PCPF_FREE_HIGH_BATCH;
+ else
+ pcp->flags &= ~PCPF_FREE_HIGH_BATCH;
+ spin_unlock(&pcp->lock);
+ }
+}
+
+void setup_pcp_cacheinfo(void)
+{
+ struct zone *zone;
+
+ for_each_populated_zone(zone)
+ zone_pcp_update_cacheinfo(zone);
+}
+
/*
* Allocate per cpu pagesets and initialize them.
* Before this call only boot pagesets were available.
--
2.39.2
In page allocator, PCP (Per-CPU Pageset) is refilled and drained in
batches to increase page allocation throughput, reduce page
allocation/freeing latency per page, and reduce zone lock contention.
But too large batch size will cause too long maximal
allocation/freeing latency, which may punish arbitrary users. So the
default batch size is chosen carefully (in zone_batchsize(), the value
is 63 for zone > 1GB) to avoid that.
In commit 3b12e7e97938 ("mm/page_alloc: scale the number of pages that
are batch freed"), the batch size will be scaled for large number of
page freeing to improve page freeing performance and reduce zone lock
contention. Similar optimization can be used for large number of
pages allocation too.
To find out a suitable max batch scale factor (that is, max effective
batch size), some tests and measurement on some machines were done as
follows.
A set of debug patches are implemented as follows,
- Set PCP high to be 2 * batch to reduce the effect of PCP high
- Disable free batch size scaling to get the raw performance.
- The code with zone lock held is extracted from rmqueue_bulk() and
free_pcppages_bulk() to 2 separate functions to make it easy to
measure the function run time with ftrace function_graph tracer.
- The batch size is hard coded to be 63 (default), 127, 255, 511,
1023, 2047, 4095.
Then will-it-scale/page_fault1 is used to generate the page
allocation/freeing workload. The page allocation/freeing throughput
(page/s) is measured via will-it-scale. The page allocation/freeing
average latency (alloc/free latency avg, in us) and allocation/freeing
latency at 99 percentile (alloc/free latency 99%, in us) are measured
with ftrace function_graph tracer.
The test results are as follows,
Sapphire Rapids Server
======================
Batch throughput free latency free latency alloc latency alloc latency
page/s avg / us 99% / us avg / us 99% / us
----- ---------- ------------ ------------ ------------- -------------
63 513633.4 2.33 3.57 2.67 6.83
127 517616.7 4.35 6.65 4.22 13.03
255 520822.8 8.29 13.32 7.52 25.24
511 524122.0 15.79 23.42 14.02 49.35
1023 525980.5 30.25 44.19 25.36 94.88
2047 526793.6 59.39 84.50 45.22 140.81
Ice Lake Server
===============
Batch throughput free latency free latency alloc latency alloc latency
page/s avg / us 99% / us avg / us 99% / us
----- ---------- ------------ ------------ ------------- -------------
63 620210.3 2.21 3.68 2.02 4.35
127 627003.0 4.09 6.86 3.51 8.28
255 630777.5 7.70 13.50 6.17 15.97
511 633651.5 14.85 22.62 11.66 31.08
1023 637071.1 28.55 42.02 20.81 54.36
2047 638089.7 56.54 84.06 39.28 91.68
Cascade Lake Server
===================
Batch throughput free latency free latency alloc latency alloc latency
page/s avg / us 99% / us avg / us 99% / us
----- ---------- ------------ ------------ ------------- -------------
63 404706.7 3.29 5.03 3.53 4.75
127 422475.2 6.12 9.09 6.36 8.76
255 411522.2 11.68 16.97 10.90 16.39
511 428124.1 22.54 31.28 19.86 32.25
1023 414718.4 43.39 62.52 40.00 66.33
2047 429848.7 86.64 120.34 71.14 106.08
Commet Lake Desktop
===================
Batch throughput free latency free latency alloc latency alloc latency
page/s avg / us 99% / us avg / us 99% / us
----- ---------- ------------ ------------ ------------- -------------
63 795183.13 2.18 3.55 2.03 3.05
127 803067.85 3.91 6.56 3.85 5.52
255 812771.10 7.35 10.80 7.14 10.20
511 817723.48 14.17 27.54 13.43 30.31
1023 818870.19 27.72 40.10 27.89 46.28
Coffee Lake Desktop
===================
Batch throughput free latency free latency alloc latency alloc latency
page/s avg / us 99% / us avg / us 99% / us
----- ---------- ------------ ------------ ------------- -------------
63 510542.8 3.13 4.40 2.48 3.43
127 514288.6 5.97 7.89 4.65 6.04
255 516889.7 11.86 15.58 8.96 12.55
511 519802.4 23.10 28.81 16.95 26.19
1023 520802.7 45.30 52.51 33.19 45.95
2047 519997.1 90.63 104.00 65.26 81.74
From the above data, to restrict the allocation/freeing latency to be
less than 100 us in most times, the max batch scale factor needs to be
less than or equal to 5.
Although it is reasonable to use 5 as max batch scale factor for the
systems tested, there are also slower systems. Where smaller value
should be used to constrain the page allocation/freeing latency.
So, in this patch, a new kconfig option (PCP_BATCH_SCALE_MAX) is added
to set the max batch scale factor. Whose default value is 5, and
users can reduce it when necessary.
Signed-off-by: "Huang, Ying" <[email protected]>
Acked-by: Andrew Morton <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Christoph Lameter <[email protected]>
---
mm/Kconfig | 11 +++++++++++
mm/page_alloc.c | 2 +-
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/mm/Kconfig b/mm/Kconfig
index 264a2df5ecf5..ece4f2847e2b 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -704,6 +704,17 @@ config HUGETLB_PAGE_SIZE_VARIABLE
config CONTIG_ALLOC
def_bool (MEMORY_ISOLATION && COMPACTION) || CMA
+config PCP_BATCH_SCALE_MAX
+ int "Maximum scale factor of PCP (Per-CPU pageset) batch allocate/free"
+ default 5
+ range 0 6
+ help
+ In page allocator, PCP (Per-CPU pageset) is refilled and drained in
+ batches. The batch number is scaled automatically to improve page
+ allocation/free throughput. But too large scale factor may hurt
+ latency. This option sets the upper limit of scale factor to limit
+ the maximum latency.
+
config PHYS_ADDR_T_64BIT
def_bool 64BIT
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index ba2d8f06523e..a5a5a4c3cd2b 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2340,7 +2340,7 @@ static int nr_pcp_free(struct per_cpu_pages *pcp, int high, bool free_high)
* freeing of pages without any allocation.
*/
batch <<= pcp->free_factor;
- if (batch < max_nr_free)
+ if (batch < max_nr_free && pcp->free_factor < CONFIG_PCP_BATCH_SCALE_MAX)
pcp->free_factor++;
batch = clamp(batch, min_nr_free, max_nr_free);
--
2.39.2
This can be used to estimate the size of the data cache slice that can
be used by one CPU under ideal circumstances. Both DATA caches and
UNIFIED caches are used in calculation. So, the users need to consider
the impact of the code cache usage.
Because the cache inclusive/non-inclusive information isn't available
now, we just use the size of the per-CPU slice of LLC to make the
result more predictable across architectures. This may be improved
when more cache information is available in the future.
A brute-force algorithm to iterate all online CPUs is used to avoid
to allocate an extra cpumask, especially in offline callback.
Signed-off-by: "Huang, Ying" <[email protected]>
Cc: Sudeep Holla <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Christoph Lameter <[email protected]>
---
drivers/base/cacheinfo.c | 49 ++++++++++++++++++++++++++++++++++++++-
include/linux/cacheinfo.h | 1 +
2 files changed, 49 insertions(+), 1 deletion(-)
diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c
index cbae8be1fe52..585c66fce9d9 100644
--- a/drivers/base/cacheinfo.c
+++ b/drivers/base/cacheinfo.c
@@ -898,6 +898,48 @@ static int cache_add_dev(unsigned int cpu)
return rc;
}
+/*
+ * Calculate the size of the per-CPU data cache slice. This can be
+ * used to estimate the size of the data cache slice that can be used
+ * by one CPU under ideal circumstances. UNIFIED caches are counted
+ * in addition to DATA caches. So, please consider code cache usage
+ * when use the result.
+ *
+ * Because the cache inclusive/non-inclusive information isn't
+ * available, we just use the size of the per-CPU slice of LLC to make
+ * the result more predictable across architectures.
+ */
+static void update_per_cpu_data_slice_size_cpu(unsigned int cpu)
+{
+ struct cpu_cacheinfo *ci;
+ struct cacheinfo *llc;
+ unsigned int nr_shared;
+
+ if (!last_level_cache_is_valid(cpu))
+ return;
+
+ ci = ci_cacheinfo(cpu);
+ llc = per_cpu_cacheinfo_idx(cpu, cache_leaves(cpu) - 1);
+
+ if (llc->type != CACHE_TYPE_DATA && llc->type != CACHE_TYPE_UNIFIED)
+ return;
+
+ nr_shared = cpumask_weight(&llc->shared_cpu_map);
+ if (nr_shared)
+ ci->per_cpu_data_slice_size = llc->size / nr_shared;
+}
+
+static void update_per_cpu_data_slice_size(bool cpu_online, unsigned int cpu)
+{
+ unsigned int icpu;
+
+ for_each_online_cpu(icpu) {
+ if (!cpu_online && icpu == cpu)
+ continue;
+ update_per_cpu_data_slice_size_cpu(icpu);
+ }
+}
+
static int cacheinfo_cpu_online(unsigned int cpu)
{
int rc = detect_cache_attributes(cpu);
@@ -906,7 +948,11 @@ static int cacheinfo_cpu_online(unsigned int cpu)
return rc;
rc = cache_add_dev(cpu);
if (rc)
- free_cache_attributes(cpu);
+ goto err;
+ update_per_cpu_data_slice_size(true, cpu);
+ return 0;
+err:
+ free_cache_attributes(cpu);
return rc;
}
@@ -916,6 +962,7 @@ static int cacheinfo_cpu_pre_down(unsigned int cpu)
cpu_cache_sysfs_exit(cpu);
free_cache_attributes(cpu);
+ update_per_cpu_data_slice_size(false, cpu);
return 0;
}
diff --git a/include/linux/cacheinfo.h b/include/linux/cacheinfo.h
index a5cfd44fab45..d504eb4b49ab 100644
--- a/include/linux/cacheinfo.h
+++ b/include/linux/cacheinfo.h
@@ -73,6 +73,7 @@ struct cacheinfo {
struct cpu_cacheinfo {
struct cacheinfo *info_list;
+ unsigned int per_cpu_data_slice_size;
unsigned int num_levels;
unsigned int num_leaves;
bool cpu_map_populated;
--
2.39.2
When a task is allocating a large number of order-0 pages, it may
acquire the zone->lock multiple times allocating pages in batches.
This may unnecessarily contend on the zone lock when allocating very
large number of pages. This patch adapts the size of the batch based
on the recent pattern to scale the batch size for subsequent
allocations.
On a 2-socket Intel server with 224 logical CPU, we run 8 kbuild
instances in parallel (each with `make -j 28`) in 8 cgroup. This
simulates the kbuild server that is used by 0-Day kbuild service.
With the patch, the cycles% of the spinlock contention (mostly for
zone lock) decreases from 12.6% to 11.0% (with PCP size == 367).
Signed-off-by: "Huang, Ying" <[email protected]>
Suggested-by: Mel Gorman <[email protected]>
Acked-by: Mel Gorman <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Christoph Lameter <[email protected]>
---
include/linux/mmzone.h | 3 ++-
mm/page_alloc.c | 53 ++++++++++++++++++++++++++++++++++--------
2 files changed, 45 insertions(+), 11 deletions(-)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index cdff247e8c6f..ba548ae20686 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -697,9 +697,10 @@ struct per_cpu_pages {
int high; /* high watermark, emptying needed */
int batch; /* chunk size for buddy add/remove */
u8 flags; /* protected by pcp->lock */
+ u8 alloc_factor; /* batch scaling factor during allocate */
u8 free_factor; /* batch scaling factor during free */
#ifdef CONFIG_NUMA
- short expire; /* When 0, remote pagesets are drained */
+ u8 expire; /* When 0, remote pagesets are drained */
#endif
/* Lists of pages, one per migrate type stored on the pcp-lists */
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index a5a5a4c3cd2b..eeef0ead1c2a 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2373,6 +2373,12 @@ static void free_unref_page_commit(struct zone *zone, struct per_cpu_pages *pcp,
int pindex;
bool free_high = false;
+ /*
+ * On freeing, reduce the number of pages that are batch allocated.
+ * See nr_pcp_alloc() where alloc_factor is increased for subsequent
+ * allocations.
+ */
+ pcp->alloc_factor >>= 1;
__count_vm_events(PGFREE, 1 << order);
pindex = order_to_pindex(migratetype, order);
list_add(&page->pcp_list, &pcp->lists[pindex]);
@@ -2679,6 +2685,42 @@ struct page *rmqueue_buddy(struct zone *preferred_zone, struct zone *zone,
return page;
}
+static int nr_pcp_alloc(struct per_cpu_pages *pcp, int order)
+{
+ int high, batch, max_nr_alloc;
+
+ high = READ_ONCE(pcp->high);
+ batch = READ_ONCE(pcp->batch);
+
+ /* Check for PCP disabled or boot pageset */
+ if (unlikely(high < batch))
+ return 1;
+
+ /*
+ * Double the number of pages allocated each time there is subsequent
+ * allocation of order-0 pages without any freeing.
+ */
+ if (!order) {
+ max_nr_alloc = max(high - pcp->count - batch, batch);
+ batch <<= pcp->alloc_factor;
+ if (batch <= max_nr_alloc &&
+ pcp->alloc_factor < CONFIG_PCP_BATCH_SCALE_MAX)
+ pcp->alloc_factor++;
+ batch = min(batch, max_nr_alloc);
+ }
+
+ /*
+ * Scale batch relative to order if batch implies free pages
+ * can be stored on the PCP. Batch can be 1 for small zones or
+ * for boot pagesets which should never store free pages as
+ * the pages may belong to arbitrary zones.
+ */
+ if (batch > 1)
+ batch = max(batch >> order, 2);
+
+ return batch;
+}
+
/* Remove page from the per-cpu list, caller must protect the list */
static inline
struct page *__rmqueue_pcplist(struct zone *zone, unsigned int order,
@@ -2691,18 +2733,9 @@ struct page *__rmqueue_pcplist(struct zone *zone, unsigned int order,
do {
if (list_empty(list)) {
- int batch = READ_ONCE(pcp->batch);
+ int batch = nr_pcp_alloc(pcp, order);
int alloced;
- /*
- * Scale batch relative to order if batch implies
- * free pages can be stored on the PCP. Batch can
- * be 1 for small zones or for boot pagesets which
- * should never store free pages as the pages may
- * belong to arbitrary zones.
- */
- if (batch > 1)
- batch = max(batch >> order, 2);
alloced = rmqueue_bulk(zone, order,
batch, list,
migratetype, alloc_flags);
--
2.39.2
In current PCP auto-tuning design, if the number of pages allocated is
much more than that of pages freed on a CPU, the PCP high may become
the maximal value even if the allocating/freeing depth is small, for
example, in the sender of network workloads. If a CPU was used as
sender originally, then it is used as receiver after context
switching, we need to fill the whole PCP with maximal high before
triggering PCP draining for consecutive high order freeing. This will
hurt the performance of some network workloads.
To solve the issue, in this patch, we will track the consecutive page
freeing with a counter in stead of relying on PCP draining. So, we
can detect consecutive page freeing much earlier.
On a 2-socket Intel server with 128 logical CPU, we tested
SCTP_STREAM_MANY test case of netperf test suite with 64-pair
processes. With the patch, the network bandwidth improves 5.0%. This
restores the performance drop caused by PCP auto-tuning.
Signed-off-by: "Huang, Ying" <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Christoph Lameter <[email protected]>
---
include/linux/mmzone.h | 2 +-
mm/page_alloc.c | 27 +++++++++++++++------------
2 files changed, 16 insertions(+), 13 deletions(-)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index c88770381aaf..57086c57b8e4 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -700,10 +700,10 @@ struct per_cpu_pages {
int batch; /* chunk size for buddy add/remove */
u8 flags; /* protected by pcp->lock */
u8 alloc_factor; /* batch scaling factor during allocate */
- u8 free_factor; /* batch scaling factor during free */
#ifdef CONFIG_NUMA
u8 expire; /* When 0, remote pagesets are drained */
#endif
+ short free_count; /* consecutive free count */
/* Lists of pages, one per migrate type stored on the pcp-lists */
struct list_head lists[NR_PCP_LISTS];
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 253fc7d0498e..28088dd7a968 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2369,13 +2369,10 @@ static int nr_pcp_free(struct per_cpu_pages *pcp, int batch, int high, bool free
max_nr_free = high - batch;
/*
- * Double the number of pages freed each time there is subsequent
- * freeing of pages without any allocation.
+ * Increase the batch number to the number of the consecutive
+ * freed pages to reduce zone lock contention.
*/
- batch <<= pcp->free_factor;
- if (batch <= max_nr_free && pcp->free_factor < CONFIG_PCP_BATCH_SCALE_MAX)
- pcp->free_factor++;
- batch = clamp(batch, min_nr_free, max_nr_free);
+ batch = clamp_t(int, pcp->free_count, min_nr_free, max_nr_free);
return batch;
}
@@ -2403,7 +2400,9 @@ static int nr_pcp_high(struct per_cpu_pages *pcp, struct zone *zone,
* stored on pcp lists
*/
if (test_bit(ZONE_RECLAIM_ACTIVE, &zone->flags)) {
- pcp->high = max(high - (batch << pcp->free_factor), high_min);
+ int free_count = max_t(int, pcp->free_count, batch);
+
+ pcp->high = max(high - free_count, high_min);
return min(batch << 2, pcp->high);
}
@@ -2411,10 +2410,12 @@ static int nr_pcp_high(struct per_cpu_pages *pcp, struct zone *zone,
return high;
if (test_bit(ZONE_BELOW_HIGH, &zone->flags)) {
- pcp->high = max(high - (batch << pcp->free_factor), high_min);
+ int free_count = max_t(int, pcp->free_count, batch);
+
+ pcp->high = max(high - free_count, high_min);
high = max(pcp->count, high_min);
} else if (pcp->count >= high) {
- int need_high = (batch << pcp->free_factor) + batch;
+ int need_high = pcp->free_count + batch;
/* pcp->high should be large enough to hold batch freed pages */
if (pcp->high < need_high)
@@ -2451,7 +2452,7 @@ static void free_unref_page_commit(struct zone *zone, struct per_cpu_pages *pcp,
* stops will be drained from vmstat refresh context.
*/
if (order && order <= PAGE_ALLOC_COSTLY_ORDER) {
- free_high = (pcp->free_factor &&
+ free_high = (pcp->free_count >= batch &&
(pcp->flags & PCPF_PREV_FREE_HIGH_ORDER) &&
(!(pcp->flags & PCPF_FREE_HIGH_BATCH) ||
pcp->count >= READ_ONCE(batch)));
@@ -2459,6 +2460,8 @@ static void free_unref_page_commit(struct zone *zone, struct per_cpu_pages *pcp,
} else if (pcp->flags & PCPF_PREV_FREE_HIGH_ORDER) {
pcp->flags &= ~PCPF_PREV_FREE_HIGH_ORDER;
}
+ if (pcp->free_count < (batch << CONFIG_PCP_BATCH_SCALE_MAX))
+ pcp->free_count += (1 << order);
high = nr_pcp_high(pcp, zone, batch, free_high);
if (pcp->count >= high) {
free_pcppages_bulk(zone, nr_pcp_free(pcp, batch, high, free_high),
@@ -2855,7 +2858,7 @@ static struct page *rmqueue_pcplist(struct zone *preferred_zone,
* See nr_pcp_free() where free_factor is increased for subsequent
* frees.
*/
- pcp->free_factor >>= 1;
+ pcp->free_count >>= 1;
list = &pcp->lists[order_to_pindex(migratetype, order)];
page = __rmqueue_pcplist(zone, order, migratetype, alloc_flags, pcp, list);
pcp_spin_unlock(pcp);
@@ -5488,7 +5491,7 @@ static void per_cpu_pages_init(struct per_cpu_pages *pcp, struct per_cpu_zonesta
pcp->high_min = BOOT_PAGESET_HIGH;
pcp->high_max = BOOT_PAGESET_HIGH;
pcp->batch = BOOT_PAGESET_BATCH;
- pcp->free_factor = 0;
+ pcp->free_count = 0;
}
static void __zone_set_pageset_high_and_batch(struct zone *zone, unsigned long high_min,
--
2.39.2
One target of PCP is to minimize pages in PCP if the system free pages
is too few. To reach that target, when page reclaiming is active for
the zone (ZONE_RECLAIM_ACTIVE), we will stop increasing PCP high in
allocating path, decrease PCP high and free some pages in freeing
path. But this may be too late because the background page reclaiming
may introduce latency for some workloads. So, in this patch, during
page allocation we will detect whether the number of free pages of the
zone is below high watermark. If so, we will stop increasing PCP high
in allocating path, decrease PCP high and free some pages in freeing
path. With this, we can reduce the possibility of the premature
background page reclaiming caused by too large PCP.
The high watermark checking is done in allocating path to reduce the
overhead in hotter freeing path.
Signed-off-by: "Huang, Ying" <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Christoph Lameter <[email protected]>
---
include/linux/mmzone.h | 1 +
mm/page_alloc.c | 33 +++++++++++++++++++++++++++++++--
2 files changed, 32 insertions(+), 2 deletions(-)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index ec3f7daedcc7..c88770381aaf 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -1018,6 +1018,7 @@ enum zone_flags {
* Cleared when kswapd is woken.
*/
ZONE_RECLAIM_ACTIVE, /* kswapd may be scanning the zone. */
+ ZONE_BELOW_HIGH, /* zone is below high watermark. */
};
static inline unsigned long zone_managed_pages(struct zone *zone)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 8382ad2cdfd4..253fc7d0498e 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2407,7 +2407,13 @@ static int nr_pcp_high(struct per_cpu_pages *pcp, struct zone *zone,
return min(batch << 2, pcp->high);
}
- if (pcp->count >= high && high_min != high_max) {
+ if (high_min == high_max)
+ return high;
+
+ if (test_bit(ZONE_BELOW_HIGH, &zone->flags)) {
+ pcp->high = max(high - (batch << pcp->free_factor), high_min);
+ high = max(pcp->count, high_min);
+ } else if (pcp->count >= high) {
int need_high = (batch << pcp->free_factor) + batch;
/* pcp->high should be large enough to hold batch freed pages */
@@ -2457,6 +2463,10 @@ static void free_unref_page_commit(struct zone *zone, struct per_cpu_pages *pcp,
if (pcp->count >= high) {
free_pcppages_bulk(zone, nr_pcp_free(pcp, batch, high, free_high),
pcp, pindex);
+ if (test_bit(ZONE_BELOW_HIGH, &zone->flags) &&
+ zone_watermark_ok(zone, 0, high_wmark_pages(zone),
+ ZONE_MOVABLE, 0))
+ clear_bit(ZONE_BELOW_HIGH, &zone->flags);
}
}
@@ -2763,7 +2773,7 @@ static int nr_pcp_alloc(struct per_cpu_pages *pcp, struct zone *zone, int order)
* If we had larger pcp->high, we could avoid to allocate from
* zone.
*/
- if (high_min != high_max && !test_bit(ZONE_RECLAIM_ACTIVE, &zone->flags))
+ if (high_min != high_max && !test_bit(ZONE_BELOW_HIGH, &zone->flags))
high = pcp->high = min(high + batch, high_max);
if (!order) {
@@ -3225,6 +3235,25 @@ get_page_from_freelist(gfp_t gfp_mask, unsigned int order, int alloc_flags,
}
}
+ /*
+ * Detect whether the number of free pages is below high
+ * watermark. If so, we will decrease pcp->high and free
+ * PCP pages in free path to reduce the possibility of
+ * premature page reclaiming. Detection is done here to
+ * avoid to do that in hotter free path.
+ */
+ if (test_bit(ZONE_BELOW_HIGH, &zone->flags))
+ goto check_alloc_wmark;
+
+ mark = high_wmark_pages(zone);
+ if (zone_watermark_fast(zone, order, mark,
+ ac->highest_zoneidx, alloc_flags,
+ gfp_mask))
+ goto try_this_zone;
+ else
+ set_bit(ZONE_BELOW_HIGH, &zone->flags);
+
+check_alloc_wmark:
mark = wmark_pages(zone, alloc_flags & ALLOC_WMARK_MASK);
if (!zone_watermark_fast(zone, order, mark,
ac->highest_zoneidx, alloc_flags,
--
2.39.2
The page allocation performance requirements of different workloads
are usually different. So, we need to tune PCP (per-CPU pageset) high
to optimize the workload page allocation performance. Now, we have a
system wide sysctl knob (percpu_pagelist_high_fraction) to tune PCP
high by hand. But, it's hard to find out the best value by hand. And
one global configuration may not work best for the different workloads
that run on the same system. One solution to these issues is to tune
PCP high of each CPU automatically.
This patch adds the framework for PCP high auto-tuning. With it,
pcp->high of each CPU will be changed automatically by tuning
algorithm at runtime. The minimal high (pcp->high_min) is the
original PCP high value calculated based on the low watermark pages.
While the maximal high (pcp->high_max) is the PCP high value when
percpu_pagelist_high_fraction sysctl knob is set to
MIN_PERCPU_PAGELIST_HIGH_FRACTION. That is, the maximal pcp->high
that can be set via sysctl knob by hand.
It's possible that PCP high auto-tuning doesn't work well for some
workloads. So, when PCP high is tuned by hand via the sysctl knob,
the auto-tuning will be disabled. The PCP high set by hand will be
used instead.
This patch only adds the framework, so pcp->high will be set to
pcp->high_min (original default) always. We will add actual
auto-tuning algorithm in the following patches in the series.
Signed-off-by: "Huang, Ying" <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Christoph Lameter <[email protected]>
---
include/linux/mmzone.h | 5 ++-
mm/page_alloc.c | 71 +++++++++++++++++++++++++++---------------
2 files changed, 50 insertions(+), 26 deletions(-)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index ba548ae20686..ec3f7daedcc7 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -695,6 +695,8 @@ struct per_cpu_pages {
spinlock_t lock; /* Protects lists field */
int count; /* number of pages in the list */
int high; /* high watermark, emptying needed */
+ int high_min; /* min high watermark */
+ int high_max; /* max high watermark */
int batch; /* chunk size for buddy add/remove */
u8 flags; /* protected by pcp->lock */
u8 alloc_factor; /* batch scaling factor during allocate */
@@ -854,7 +856,8 @@ struct zone {
* the high and batch values are copied to individual pagesets for
* faster access
*/
- int pageset_high;
+ int pageset_high_min;
+ int pageset_high_max;
int pageset_batch;
#ifndef CONFIG_SPARSEMEM
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index eeef0ead1c2a..1fb2c6ebde9c 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2350,7 +2350,7 @@ static int nr_pcp_free(struct per_cpu_pages *pcp, int high, bool free_high)
static int nr_pcp_high(struct per_cpu_pages *pcp, struct zone *zone,
bool free_high)
{
- int high = READ_ONCE(pcp->high);
+ int high = READ_ONCE(pcp->high_min);
if (unlikely(!high || free_high))
return 0;
@@ -2689,7 +2689,7 @@ static int nr_pcp_alloc(struct per_cpu_pages *pcp, int order)
{
int high, batch, max_nr_alloc;
- high = READ_ONCE(pcp->high);
+ high = READ_ONCE(pcp->high_min);
batch = READ_ONCE(pcp->batch);
/* Check for PCP disabled or boot pageset */
@@ -5296,14 +5296,15 @@ static int zone_batchsize(struct zone *zone)
}
static int percpu_pagelist_high_fraction;
-static int zone_highsize(struct zone *zone, int batch, int cpu_online)
+static int zone_highsize(struct zone *zone, int batch, int cpu_online,
+ int high_fraction)
{
#ifdef CONFIG_MMU
int high;
int nr_split_cpus;
unsigned long total_pages;
- if (!percpu_pagelist_high_fraction) {
+ if (!high_fraction) {
/*
* By default, the high value of the pcp is based on the zone
* low watermark so that if they are full then background
@@ -5316,15 +5317,15 @@ static int zone_highsize(struct zone *zone, int batch, int cpu_online)
* value is based on a fraction of the managed pages in the
* zone.
*/
- total_pages = zone_managed_pages(zone) / percpu_pagelist_high_fraction;
+ total_pages = zone_managed_pages(zone) / high_fraction;
}
/*
* Split the high value across all online CPUs local to the zone. Note
* that early in boot that CPUs may not be online yet and that during
* CPU hotplug that the cpumask is not yet updated when a CPU is being
- * onlined. For memory nodes that have no CPUs, split pcp->high across
- * all online CPUs to mitigate the risk that reclaim is triggered
+ * onlined. For memory nodes that have no CPUs, split the high value
+ * across all online CPUs to mitigate the risk that reclaim is triggered
* prematurely due to pages stored on pcp lists.
*/
nr_split_cpus = cpumask_weight(cpumask_of_node(zone_to_nid(zone))) + cpu_online;
@@ -5352,19 +5353,21 @@ static int zone_highsize(struct zone *zone, int batch, int cpu_online)
* However, guaranteeing these relations at all times would require e.g. write
* barriers here but also careful usage of read barriers at the read side, and
* thus be prone to error and bad for performance. Thus the update only prevents
- * store tearing. Any new users of pcp->batch and pcp->high should ensure they
- * can cope with those fields changing asynchronously, and fully trust only the
- * pcp->count field on the local CPU with interrupts disabled.
+ * store tearing. Any new users of pcp->batch, pcp->high_min and pcp->high_max
+ * should ensure they can cope with those fields changing asynchronously, and
+ * fully trust only the pcp->count field on the local CPU with interrupts
+ * disabled.
*
* mutex_is_locked(&pcp_batch_high_lock) required when calling this function
* outside of boot time (or some other assurance that no concurrent updaters
* exist).
*/
-static void pageset_update(struct per_cpu_pages *pcp, unsigned long high,
- unsigned long batch)
+static void pageset_update(struct per_cpu_pages *pcp, unsigned long high_min,
+ unsigned long high_max, unsigned long batch)
{
WRITE_ONCE(pcp->batch, batch);
- WRITE_ONCE(pcp->high, high);
+ WRITE_ONCE(pcp->high_min, high_min);
+ WRITE_ONCE(pcp->high_max, high_max);
}
static void per_cpu_pages_init(struct per_cpu_pages *pcp, struct per_cpu_zonestat *pzstats)
@@ -5384,20 +5387,21 @@ static void per_cpu_pages_init(struct per_cpu_pages *pcp, struct per_cpu_zonesta
* need to be as careful as pageset_update() as nobody can access the
* pageset yet.
*/
- pcp->high = BOOT_PAGESET_HIGH;
+ pcp->high_min = BOOT_PAGESET_HIGH;
+ pcp->high_max = BOOT_PAGESET_HIGH;
pcp->batch = BOOT_PAGESET_BATCH;
pcp->free_factor = 0;
}
-static void __zone_set_pageset_high_and_batch(struct zone *zone, unsigned long high,
- unsigned long batch)
+static void __zone_set_pageset_high_and_batch(struct zone *zone, unsigned long high_min,
+ unsigned long high_max, unsigned long batch)
{
struct per_cpu_pages *pcp;
int cpu;
for_each_possible_cpu(cpu) {
pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu);
- pageset_update(pcp, high, batch);
+ pageset_update(pcp, high_min, high_max, batch);
}
}
@@ -5407,19 +5411,34 @@ static void __zone_set_pageset_high_and_batch(struct zone *zone, unsigned long h
*/
static void zone_set_pageset_high_and_batch(struct zone *zone, int cpu_online)
{
- int new_high, new_batch;
+ int new_high_min, new_high_max, new_batch;
new_batch = max(1, zone_batchsize(zone));
- new_high = zone_highsize(zone, new_batch, cpu_online);
+ if (percpu_pagelist_high_fraction) {
+ new_high_min = zone_highsize(zone, new_batch, cpu_online,
+ percpu_pagelist_high_fraction);
+ /*
+ * PCP high is tuned manually, disable auto-tuning via
+ * setting high_min and high_max to the manual value.
+ */
+ new_high_max = new_high_min;
+ } else {
+ new_high_min = zone_highsize(zone, new_batch, cpu_online, 0);
+ new_high_max = zone_highsize(zone, new_batch, cpu_online,
+ MIN_PERCPU_PAGELIST_HIGH_FRACTION);
+ }
- if (zone->pageset_high == new_high &&
+ if (zone->pageset_high_min == new_high_min &&
+ zone->pageset_high_max == new_high_max &&
zone->pageset_batch == new_batch)
return;
- zone->pageset_high = new_high;
+ zone->pageset_high_min = new_high_min;
+ zone->pageset_high_max = new_high_max;
zone->pageset_batch = new_batch;
- __zone_set_pageset_high_and_batch(zone, new_high, new_batch);
+ __zone_set_pageset_high_and_batch(zone, new_high_min, new_high_max,
+ new_batch);
}
void __meminit setup_zone_pageset(struct zone *zone)
@@ -5528,7 +5547,8 @@ __meminit void zone_pcp_init(struct zone *zone)
*/
zone->per_cpu_pageset = &boot_pageset;
zone->per_cpu_zonestats = &boot_zonestats;
- zone->pageset_high = BOOT_PAGESET_HIGH;
+ zone->pageset_high_min = BOOT_PAGESET_HIGH;
+ zone->pageset_high_max = BOOT_PAGESET_HIGH;
zone->pageset_batch = BOOT_PAGESET_BATCH;
if (populated_zone(zone))
@@ -6430,13 +6450,14 @@ EXPORT_SYMBOL(free_contig_range);
void zone_pcp_disable(struct zone *zone)
{
mutex_lock(&pcp_batch_high_lock);
- __zone_set_pageset_high_and_batch(zone, 0, 1);
+ __zone_set_pageset_high_and_batch(zone, 0, 0, 1);
__drain_all_pages(zone, true);
}
void zone_pcp_enable(struct zone *zone)
{
- __zone_set_pageset_high_and_batch(zone, zone->pageset_high, zone->pageset_batch);
+ __zone_set_pageset_high_and_batch(zone, zone->pageset_high_min,
+ zone->pageset_high_max, zone->pageset_batch);
mutex_unlock(&pcp_batch_high_lock);
}
--
2.39.2
The target to tune PCP high automatically is as follows,
- Minimize allocation/freeing from/to shared zone
- Minimize idle pages in PCP
- Minimize pages in PCP if the system free pages is too few
To reach these target, a tuning algorithm as follows is designed,
- When we refill PCP via allocating from the zone, increase PCP high.
Because if we had larger PCP, we could avoid to allocate from the
zone.
- In periodic vmstat updating kworker (via refresh_cpu_vm_stats()),
decrease PCP high to try to free possible idle PCP pages.
- When page reclaiming is active for the zone, stop increasing PCP
high in allocating path, decrease PCP high and free some pages in
freeing path.
So, the PCP high can be tuned to the page allocating/freeing depth of
workloads eventually.
One issue of the algorithm is that if the number of pages allocated is
much more than that of pages freed on a CPU, the PCP high may become
the maximal value even if the allocating/freeing depth is small. But
this isn't a severe issue, because there are no idle pages in this
case.
One alternative choice is to increase PCP high when we drain PCP via
trying to free pages to the zone, but don't increase PCP high during
PCP refilling. This can avoid the issue above. But if the number of
pages allocated is much less than that of pages freed on a CPU, there
will be many idle pages in PCP and it is hard to free these idle
pages.
1/8 (>> 3) of PCP high will be decreased periodically. The value 1/8
is kind of arbitrary. Just to make sure that the idle PCP pages will
be freed eventually.
On a 2-socket Intel server with 224 logical CPU, we run 8 kbuild
instances in parallel (each with `make -j 28`) in 8 cgroup. This
simulates the kbuild server that is used by 0-Day kbuild service.
With the patch, the build time decreases 3.5%. The cycles% of the
spinlock contention (mostly for zone lock) decreases from 11.0% to
0.5%. The number of PCP draining for high order pages
freeing (free_high) decreases 65.6%. The number of pages allocated
from zone (instead of from PCP) decreases 83.9%.
Signed-off-by: "Huang, Ying" <[email protected]>
Suggested-by: Mel Gorman <[email protected]>
Suggested-by: Michal Hocko <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Christoph Lameter <[email protected]>
---
include/linux/gfp.h | 1 +
mm/page_alloc.c | 119 ++++++++++++++++++++++++++++++++++----------
mm/vmstat.c | 8 +--
3 files changed, 99 insertions(+), 29 deletions(-)
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 665edc11fb9f..5b917e5b9350 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -320,6 +320,7 @@ extern void page_frag_free(void *addr);
#define free_page(addr) free_pages((addr), 0)
void page_alloc_init_cpuhp(void);
+int decay_pcp_high(struct zone *zone, struct per_cpu_pages *pcp);
void drain_zone_pages(struct zone *zone, struct per_cpu_pages *pcp);
void drain_all_pages(struct zone *zone);
void drain_local_pages(struct zone *zone);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 1fb2c6ebde9c..8382ad2cdfd4 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2157,6 +2157,40 @@ static int rmqueue_bulk(struct zone *zone, unsigned int order,
return i;
}
+/*
+ * Called from the vmstat counter updater to decay the PCP high.
+ * Return whether there are addition works to do.
+ */
+int decay_pcp_high(struct zone *zone, struct per_cpu_pages *pcp)
+{
+ int high_min, to_drain, batch;
+ int todo = 0;
+
+ high_min = READ_ONCE(pcp->high_min);
+ batch = READ_ONCE(pcp->batch);
+ /*
+ * Decrease pcp->high periodically to try to free possible
+ * idle PCP pages. And, avoid to free too many pages to
+ * control latency. This caps pcp->high decrement too.
+ */
+ if (pcp->high > high_min) {
+ pcp->high = max3(pcp->count - (batch << CONFIG_PCP_BATCH_SCALE_MAX),
+ pcp->high - (pcp->high >> 3), high_min);
+ if (pcp->high > high_min)
+ todo++;
+ }
+
+ to_drain = pcp->count - pcp->high;
+ if (to_drain > 0) {
+ spin_lock(&pcp->lock);
+ free_pcppages_bulk(zone, to_drain, pcp, 0);
+ spin_unlock(&pcp->lock);
+ todo++;
+ }
+
+ return todo;
+}
+
#ifdef CONFIG_NUMA
/*
* Called from the vmstat counter updater to drain pagesets of this
@@ -2318,14 +2352,13 @@ static bool free_unref_page_prepare(struct page *page, unsigned long pfn,
return true;
}
-static int nr_pcp_free(struct per_cpu_pages *pcp, int high, bool free_high)
+static int nr_pcp_free(struct per_cpu_pages *pcp, int batch, int high, bool free_high)
{
int min_nr_free, max_nr_free;
- int batch = READ_ONCE(pcp->batch);
- /* Free everything if batch freeing high-order pages. */
+ /* Free as much as possible if batch freeing high-order pages. */
if (unlikely(free_high))
- return pcp->count;
+ return min(pcp->count, batch << CONFIG_PCP_BATCH_SCALE_MAX);
/* Check for PCP disabled or boot pageset */
if (unlikely(high < batch))
@@ -2340,7 +2373,7 @@ static int nr_pcp_free(struct per_cpu_pages *pcp, int high, bool free_high)
* freeing of pages without any allocation.
*/
batch <<= pcp->free_factor;
- if (batch < max_nr_free && pcp->free_factor < CONFIG_PCP_BATCH_SCALE_MAX)
+ if (batch <= max_nr_free && pcp->free_factor < CONFIG_PCP_BATCH_SCALE_MAX)
pcp->free_factor++;
batch = clamp(batch, min_nr_free, max_nr_free);
@@ -2348,28 +2381,48 @@ static int nr_pcp_free(struct per_cpu_pages *pcp, int high, bool free_high)
}
static int nr_pcp_high(struct per_cpu_pages *pcp, struct zone *zone,
- bool free_high)
+ int batch, bool free_high)
{
- int high = READ_ONCE(pcp->high_min);
+ int high, high_min, high_max;
- if (unlikely(!high || free_high))
+ high_min = READ_ONCE(pcp->high_min);
+ high_max = READ_ONCE(pcp->high_max);
+ high = pcp->high = clamp(pcp->high, high_min, high_max);
+
+ if (unlikely(!high))
return 0;
- if (!test_bit(ZONE_RECLAIM_ACTIVE, &zone->flags))
- return high;
+ if (unlikely(free_high)) {
+ pcp->high = max(high - (batch << CONFIG_PCP_BATCH_SCALE_MAX),
+ high_min);
+ return 0;
+ }
/*
* If reclaim is active, limit the number of pages that can be
* stored on pcp lists
*/
- return min(READ_ONCE(pcp->batch) << 2, high);
+ if (test_bit(ZONE_RECLAIM_ACTIVE, &zone->flags)) {
+ pcp->high = max(high - (batch << pcp->free_factor), high_min);
+ return min(batch << 2, pcp->high);
+ }
+
+ if (pcp->count >= high && high_min != high_max) {
+ int need_high = (batch << pcp->free_factor) + batch;
+
+ /* pcp->high should be large enough to hold batch freed pages */
+ if (pcp->high < need_high)
+ pcp->high = clamp(need_high, high_min, high_max);
+ }
+
+ return high;
}
static void free_unref_page_commit(struct zone *zone, struct per_cpu_pages *pcp,
struct page *page, int migratetype,
unsigned int order)
{
- int high;
+ int high, batch;
int pindex;
bool free_high = false;
@@ -2384,6 +2437,7 @@ static void free_unref_page_commit(struct zone *zone, struct per_cpu_pages *pcp,
list_add(&page->pcp_list, &pcp->lists[pindex]);
pcp->count += 1 << order;
+ batch = READ_ONCE(pcp->batch);
/*
* As high-order pages other than THP's stored on PCP can contribute
* to fragmentation, limit the number stored when PCP is heavily
@@ -2394,14 +2448,15 @@ static void free_unref_page_commit(struct zone *zone, struct per_cpu_pages *pcp,
free_high = (pcp->free_factor &&
(pcp->flags & PCPF_PREV_FREE_HIGH_ORDER) &&
(!(pcp->flags & PCPF_FREE_HIGH_BATCH) ||
- pcp->count >= READ_ONCE(pcp->batch)));
+ pcp->count >= READ_ONCE(batch)));
pcp->flags |= PCPF_PREV_FREE_HIGH_ORDER;
} else if (pcp->flags & PCPF_PREV_FREE_HIGH_ORDER) {
pcp->flags &= ~PCPF_PREV_FREE_HIGH_ORDER;
}
- high = nr_pcp_high(pcp, zone, free_high);
+ high = nr_pcp_high(pcp, zone, batch, free_high);
if (pcp->count >= high) {
- free_pcppages_bulk(zone, nr_pcp_free(pcp, high, free_high), pcp, pindex);
+ free_pcppages_bulk(zone, nr_pcp_free(pcp, batch, high, free_high),
+ pcp, pindex);
}
}
@@ -2685,24 +2740,38 @@ struct page *rmqueue_buddy(struct zone *preferred_zone, struct zone *zone,
return page;
}
-static int nr_pcp_alloc(struct per_cpu_pages *pcp, int order)
+static int nr_pcp_alloc(struct per_cpu_pages *pcp, struct zone *zone, int order)
{
- int high, batch, max_nr_alloc;
+ int high, base_batch, batch, max_nr_alloc;
+ int high_max, high_min;
- high = READ_ONCE(pcp->high_min);
- batch = READ_ONCE(pcp->batch);
+ base_batch = READ_ONCE(pcp->batch);
+ high_min = READ_ONCE(pcp->high_min);
+ high_max = READ_ONCE(pcp->high_max);
+ high = pcp->high = clamp(pcp->high, high_min, high_max);
/* Check for PCP disabled or boot pageset */
- if (unlikely(high < batch))
+ if (unlikely(high < base_batch))
return 1;
+ if (order)
+ batch = base_batch;
+ else
+ batch = (base_batch << pcp->alloc_factor);
+
/*
- * Double the number of pages allocated each time there is subsequent
- * allocation of order-0 pages without any freeing.
+ * If we had larger pcp->high, we could avoid to allocate from
+ * zone.
*/
+ if (high_min != high_max && !test_bit(ZONE_RECLAIM_ACTIVE, &zone->flags))
+ high = pcp->high = min(high + batch, high_max);
+
if (!order) {
- max_nr_alloc = max(high - pcp->count - batch, batch);
- batch <<= pcp->alloc_factor;
+ max_nr_alloc = max(high - pcp->count - base_batch, base_batch);
+ /*
+ * Double the number of pages allocated each time there is
+ * subsequent allocation of order-0 pages without any freeing.
+ */
if (batch <= max_nr_alloc &&
pcp->alloc_factor < CONFIG_PCP_BATCH_SCALE_MAX)
pcp->alloc_factor++;
@@ -2733,7 +2802,7 @@ struct page *__rmqueue_pcplist(struct zone *zone, unsigned int order,
do {
if (list_empty(list)) {
- int batch = nr_pcp_alloc(pcp, order);
+ int batch = nr_pcp_alloc(pcp, zone, order);
int alloced;
alloced = rmqueue_bulk(zone, order,
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 00e81e99c6ee..2f716ad14168 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -814,9 +814,7 @@ static int refresh_cpu_vm_stats(bool do_pagesets)
for_each_populated_zone(zone) {
struct per_cpu_zonestat __percpu *pzstats = zone->per_cpu_zonestats;
-#ifdef CONFIG_NUMA
struct per_cpu_pages __percpu *pcp = zone->per_cpu_pageset;
-#endif
for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) {
int v;
@@ -832,10 +830,12 @@ static int refresh_cpu_vm_stats(bool do_pagesets)
#endif
}
}
-#ifdef CONFIG_NUMA
if (do_pagesets) {
cond_resched();
+
+ changes += decay_pcp_high(zone, this_cpu_ptr(pcp));
+#ifdef CONFIG_NUMA
/*
* Deal with draining the remote pageset of this
* processor
@@ -862,8 +862,8 @@ static int refresh_cpu_vm_stats(bool do_pagesets)
drain_zone_pages(zone, this_cpu_ptr(pcp));
changes++;
}
- }
#endif
+ }
}
for_each_online_pgdat(pgdat) {
--
2.39.2
On Mon, Oct 16, 2023 at 01:29:55PM +0800, Huang Ying wrote:
> This can be used to estimate the size of the data cache slice that can
> be used by one CPU under ideal circumstances. Both DATA caches and
> UNIFIED caches are used in calculation. So, the users need to consider
> the impact of the code cache usage.
>
> Because the cache inclusive/non-inclusive information isn't available
> now, we just use the size of the per-CPU slice of LLC to make the
> result more predictable across architectures. This may be improved
> when more cache information is available in the future.
>
> A brute-force algorithm to iterate all online CPUs is used to avoid
> to allocate an extra cpumask, especially in offline callback.
>
> Signed-off-by: "Huang, Ying" <[email protected]>
Acked-by: Mel Gorman <[email protected]>
--
Mel Gorman
SUSE Labs
On Mon, Oct 16, 2023 at 01:29:57PM +0800, Huang Ying wrote:
> In page allocator, PCP (Per-CPU Pageset) is refilled and drained in
> batches to increase page allocation throughput, reduce page
> allocation/freeing latency per page, and reduce zone lock contention.
> But too large batch size will cause too long maximal
> allocation/freeing latency, which may punish arbitrary users. So the
> default batch size is chosen carefully (in zone_batchsize(), the value
> is 63 for zone > 1GB) to avoid that.
>
> In commit 3b12e7e97938 ("mm/page_alloc: scale the number of pages that
> are batch freed"), the batch size will be scaled for large number of
> page freeing to improve page freeing performance and reduce zone lock
> contention. Similar optimization can be used for large number of
> pages allocation too.
>
> To find out a suitable max batch scale factor (that is, max effective
> batch size), some tests and measurement on some machines were done as
> follows.
>
> A set of debug patches are implemented as follows,
>
> - Set PCP high to be 2 * batch to reduce the effect of PCP high
>
> - Disable free batch size scaling to get the raw performance.
>
> - The code with zone lock held is extracted from rmqueue_bulk() and
> free_pcppages_bulk() to 2 separate functions to make it easy to
> measure the function run time with ftrace function_graph tracer.
>
> - The batch size is hard coded to be 63 (default), 127, 255, 511,
> 1023, 2047, 4095.
>
> Then will-it-scale/page_fault1 is used to generate the page
> allocation/freeing workload. The page allocation/freeing throughput
> (page/s) is measured via will-it-scale. The page allocation/freeing
> average latency (alloc/free latency avg, in us) and allocation/freeing
> latency at 99 percentile (alloc/free latency 99%, in us) are measured
> with ftrace function_graph tracer.
>
> The test results are as follows,
>
> Sapphire Rapids Server
> ======================
> Batch throughput free latency free latency alloc latency alloc latency
> page/s avg / us 99% / us avg / us 99% / us
> ----- ---------- ------------ ------------ ------------- -------------
> 63 513633.4 2.33 3.57 2.67 6.83
> 127 517616.7 4.35 6.65 4.22 13.03
> 255 520822.8 8.29 13.32 7.52 25.24
> 511 524122.0 15.79 23.42 14.02 49.35
> 1023 525980.5 30.25 44.19 25.36 94.88
> 2047 526793.6 59.39 84.50 45.22 140.81
>
> Ice Lake Server
> ===============
> Batch throughput free latency free latency alloc latency alloc latency
> page/s avg / us 99% / us avg / us 99% / us
> ----- ---------- ------------ ------------ ------------- -------------
> 63 620210.3 2.21 3.68 2.02 4.35
> 127 627003.0 4.09 6.86 3.51 8.28
> 255 630777.5 7.70 13.50 6.17 15.97
> 511 633651.5 14.85 22.62 11.66 31.08
> 1023 637071.1 28.55 42.02 20.81 54.36
> 2047 638089.7 56.54 84.06 39.28 91.68
>
> Cascade Lake Server
> ===================
> Batch throughput free latency free latency alloc latency alloc latency
> page/s avg / us 99% / us avg / us 99% / us
> ----- ---------- ------------ ------------ ------------- -------------
> 63 404706.7 3.29 5.03 3.53 4.75
> 127 422475.2 6.12 9.09 6.36 8.76
> 255 411522.2 11.68 16.97 10.90 16.39
> 511 428124.1 22.54 31.28 19.86 32.25
> 1023 414718.4 43.39 62.52 40.00 66.33
> 2047 429848.7 86.64 120.34 71.14 106.08
>
> Commet Lake Desktop
> ===================
> Batch throughput free latency free latency alloc latency alloc latency
> page/s avg / us 99% / us avg / us 99% / us
> ----- ---------- ------------ ------------ ------------- -------------
>
> 63 795183.13 2.18 3.55 2.03 3.05
> 127 803067.85 3.91 6.56 3.85 5.52
> 255 812771.10 7.35 10.80 7.14 10.20
> 511 817723.48 14.17 27.54 13.43 30.31
> 1023 818870.19 27.72 40.10 27.89 46.28
>
> Coffee Lake Desktop
> ===================
> Batch throughput free latency free latency alloc latency alloc latency
> page/s avg / us 99% / us avg / us 99% / us
> ----- ---------- ------------ ------------ ------------- -------------
> 63 510542.8 3.13 4.40 2.48 3.43
> 127 514288.6 5.97 7.89 4.65 6.04
> 255 516889.7 11.86 15.58 8.96 12.55
> 511 519802.4 23.10 28.81 16.95 26.19
> 1023 520802.7 45.30 52.51 33.19 45.95
> 2047 519997.1 90.63 104.00 65.26 81.74
>
> From the above data, to restrict the allocation/freeing latency to be
> less than 100 us in most times, the max batch scale factor needs to be
> less than or equal to 5.
>
> Although it is reasonable to use 5 as max batch scale factor for the
> systems tested, there are also slower systems. Where smaller value
> should be used to constrain the page allocation/freeing latency.
>
> So, in this patch, a new kconfig option (PCP_BATCH_SCALE_MAX) is added
> to set the max batch scale factor. Whose default value is 5, and
> users can reduce it when necessary.
>
> Signed-off-by: "Huang, Ying" <[email protected]>
> Acked-by: Andrew Morton <[email protected]>
Acked-by: Mel Gorman <[email protected]>
--
Mel Gorman
SUSE Labs
On Mon, Oct 16, 2023 at 01:29:59PM +0800, Huang Ying wrote:
> The page allocation performance requirements of different workloads
> are usually different. So, we need to tune PCP (per-CPU pageset) high
> to optimize the workload page allocation performance. Now, we have a
> system wide sysctl knob (percpu_pagelist_high_fraction) to tune PCP
> high by hand. But, it's hard to find out the best value by hand. And
> one global configuration may not work best for the different workloads
> that run on the same system. One solution to these issues is to tune
> PCP high of each CPU automatically.
>
> This patch adds the framework for PCP high auto-tuning. With it,
> pcp->high of each CPU will be changed automatically by tuning
> algorithm at runtime. The minimal high (pcp->high_min) is the
> original PCP high value calculated based on the low watermark pages.
> While the maximal high (pcp->high_max) is the PCP high value when
> percpu_pagelist_high_fraction sysctl knob is set to
> MIN_PERCPU_PAGELIST_HIGH_FRACTION. That is, the maximal pcp->high
> that can be set via sysctl knob by hand.
>
> It's possible that PCP high auto-tuning doesn't work well for some
> workloads. So, when PCP high is tuned by hand via the sysctl knob,
> the auto-tuning will be disabled. The PCP high set by hand will be
> used instead.
>
> This patch only adds the framework, so pcp->high will be set to
> pcp->high_min (original default) always. We will add actual
> auto-tuning algorithm in the following patches in the series.
>
> Signed-off-by: "Huang, Ying" <[email protected]>
Acked-by: Mel Gorman <[email protected]>
--
Mel Gorman
SUSE Labs
On Mon, Oct 16, 2023 at 01:30:01PM +0800, Huang Ying wrote:
> One target of PCP is to minimize pages in PCP if the system free pages
> is too few. To reach that target, when page reclaiming is active for
> the zone (ZONE_RECLAIM_ACTIVE), we will stop increasing PCP high in
> allocating path, decrease PCP high and free some pages in freeing
> path. But this may be too late because the background page reclaiming
> may introduce latency for some workloads. So, in this patch, during
> page allocation we will detect whether the number of free pages of the
> zone is below high watermark. If so, we will stop increasing PCP high
> in allocating path, decrease PCP high and free some pages in freeing
> path. With this, we can reduce the possibility of the premature
> background page reclaiming caused by too large PCP.
>
> The high watermark checking is done in allocating path to reduce the
> overhead in hotter freeing path.
>
> Signed-off-by: "Huang, Ying" <[email protected]>
> Cc: Andrew Morton <[email protected]>
> Cc: Mel Gorman <[email protected]>
> Cc: Vlastimil Babka <[email protected]>
> Cc: David Hildenbrand <[email protected]>
> Cc: Johannes Weiner <[email protected]>
> Cc: Dave Hansen <[email protected]>
> Cc: Michal Hocko <[email protected]>
> Cc: Pavel Tatashin <[email protected]>
> Cc: Matthew Wilcox <[email protected]>
> Cc: Christoph Lameter <[email protected]>
> ---
> include/linux/mmzone.h | 1 +
> mm/page_alloc.c | 33 +++++++++++++++++++++++++++++++--
> 2 files changed, 32 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
> index ec3f7daedcc7..c88770381aaf 100644
> --- a/include/linux/mmzone.h
> +++ b/include/linux/mmzone.h
> @@ -1018,6 +1018,7 @@ enum zone_flags {
> * Cleared when kswapd is woken.
> */
> ZONE_RECLAIM_ACTIVE, /* kswapd may be scanning the zone. */
> + ZONE_BELOW_HIGH, /* zone is below high watermark. */
> };
>
> static inline unsigned long zone_managed_pages(struct zone *zone)
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 8382ad2cdfd4..253fc7d0498e 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -2407,7 +2407,13 @@ static int nr_pcp_high(struct per_cpu_pages *pcp, struct zone *zone,
> return min(batch << 2, pcp->high);
> }
>
> - if (pcp->count >= high && high_min != high_max) {
> + if (high_min == high_max)
> + return high;
> +
> + if (test_bit(ZONE_BELOW_HIGH, &zone->flags)) {
> + pcp->high = max(high - (batch << pcp->free_factor), high_min);
> + high = max(pcp->count, high_min);
> + } else if (pcp->count >= high) {
> int need_high = (batch << pcp->free_factor) + batch;
>
> /* pcp->high should be large enough to hold batch freed pages */
> @@ -2457,6 +2463,10 @@ static void free_unref_page_commit(struct zone *zone, struct per_cpu_pages *pcp,
> if (pcp->count >= high) {
> free_pcppages_bulk(zone, nr_pcp_free(pcp, batch, high, free_high),
> pcp, pindex);
> + if (test_bit(ZONE_BELOW_HIGH, &zone->flags) &&
> + zone_watermark_ok(zone, 0, high_wmark_pages(zone),
> + ZONE_MOVABLE, 0))
> + clear_bit(ZONE_BELOW_HIGH, &zone->flags);
> }
> }
>
This is a relatively fast path and freeing pages should not need to check
watermarks. While the overhead is mitigated because it applies only when
the watermark is below high, that is also potentially an unbounded condition
if a workload is sized precisely enough. Why not clear this bit when kswapd
is going to sleep after reclaiming enough pages in a zone?
If you agree then a follow-up patch classed as a micro-optimisation is
sufficient to avoid redoing all the results again. For most of your
tests, it should be performance-neutral or borderline noise.
--
Mel Gorman
SUSE Labs
Mel Gorman <[email protected]> writes:
> On Mon, Oct 16, 2023 at 01:30:01PM +0800, Huang Ying wrote:
>> One target of PCP is to minimize pages in PCP if the system free pages
>> is too few. To reach that target, when page reclaiming is active for
>> the zone (ZONE_RECLAIM_ACTIVE), we will stop increasing PCP high in
>> allocating path, decrease PCP high and free some pages in freeing
>> path. But this may be too late because the background page reclaiming
>> may introduce latency for some workloads. So, in this patch, during
>> page allocation we will detect whether the number of free pages of the
>> zone is below high watermark. If so, we will stop increasing PCP high
>> in allocating path, decrease PCP high and free some pages in freeing
>> path. With this, we can reduce the possibility of the premature
>> background page reclaiming caused by too large PCP.
>>
>> The high watermark checking is done in allocating path to reduce the
>> overhead in hotter freeing path.
>>
>> Signed-off-by: "Huang, Ying" <[email protected]>
>> Cc: Andrew Morton <[email protected]>
>> Cc: Mel Gorman <[email protected]>
>> Cc: Vlastimil Babka <[email protected]>
>> Cc: David Hildenbrand <[email protected]>
>> Cc: Johannes Weiner <[email protected]>
>> Cc: Dave Hansen <[email protected]>
>> Cc: Michal Hocko <[email protected]>
>> Cc: Pavel Tatashin <[email protected]>
>> Cc: Matthew Wilcox <[email protected]>
>> Cc: Christoph Lameter <[email protected]>
>> ---
>> include/linux/mmzone.h | 1 +
>> mm/page_alloc.c | 33 +++++++++++++++++++++++++++++++--
>> 2 files changed, 32 insertions(+), 2 deletions(-)
>>
>> diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
>> index ec3f7daedcc7..c88770381aaf 100644
>> --- a/include/linux/mmzone.h
>> +++ b/include/linux/mmzone.h
>> @@ -1018,6 +1018,7 @@ enum zone_flags {
>> * Cleared when kswapd is woken.
>> */
>> ZONE_RECLAIM_ACTIVE, /* kswapd may be scanning the zone. */
>> + ZONE_BELOW_HIGH, /* zone is below high watermark. */
>> };
>>
>> static inline unsigned long zone_managed_pages(struct zone *zone)
>> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
>> index 8382ad2cdfd4..253fc7d0498e 100644
>> --- a/mm/page_alloc.c
>> +++ b/mm/page_alloc.c
>> @@ -2407,7 +2407,13 @@ static int nr_pcp_high(struct per_cpu_pages *pcp, struct zone *zone,
>> return min(batch << 2, pcp->high);
>> }
>>
>> - if (pcp->count >= high && high_min != high_max) {
>> + if (high_min == high_max)
>> + return high;
>> +
>> + if (test_bit(ZONE_BELOW_HIGH, &zone->flags)) {
>> + pcp->high = max(high - (batch << pcp->free_factor), high_min);
>> + high = max(pcp->count, high_min);
>> + } else if (pcp->count >= high) {
>> int need_high = (batch << pcp->free_factor) + batch;
>>
>> /* pcp->high should be large enough to hold batch freed pages */
>> @@ -2457,6 +2463,10 @@ static void free_unref_page_commit(struct zone *zone, struct per_cpu_pages *pcp,
>> if (pcp->count >= high) {
>> free_pcppages_bulk(zone, nr_pcp_free(pcp, batch, high, free_high),
>> pcp, pindex);
>> + if (test_bit(ZONE_BELOW_HIGH, &zone->flags) &&
>> + zone_watermark_ok(zone, 0, high_wmark_pages(zone),
>> + ZONE_MOVABLE, 0))
>> + clear_bit(ZONE_BELOW_HIGH, &zone->flags);
>> }
>> }
>>
>
> This is a relatively fast path and freeing pages should not need to check
> watermarks.
Another stuff that mitigate the overhead is that the watermarks checking
only occurs when we free pages from PCP to buddy. That is, in most
cases, every 63 page freeing.
> While the overhead is mitigated because it applies only when
> the watermark is below high, that is also potentially an unbounded condition
> if a workload is sized precisely enough. Why not clear this bit when kswapd
> is going to sleep after reclaiming enough pages in a zone?
IIUC, if the number of free pages is kept larger than the low watermark,
then kswapd will have no opportunity to be waken up even if the number
of free pages was ever smaller than the high watermark.
> If you agree then a follow-up patch classed as a micro-optimisation is
> sufficient to avoid redoing all the results again. For most of your
> tests, it should be performance-neutral or borderline noise.
--
Best Regards,
Huang, Ying
On Fri, Oct 20, 2023 at 11:30:53AM +0800, Huang, Ying wrote:
> Mel Gorman <[email protected]> writes:
>
> > On Mon, Oct 16, 2023 at 01:30:01PM +0800, Huang Ying wrote:
> >> One target of PCP is to minimize pages in PCP if the system free pages
> >> is too few. To reach that target, when page reclaiming is active for
> >> the zone (ZONE_RECLAIM_ACTIVE), we will stop increasing PCP high in
> >> allocating path, decrease PCP high and free some pages in freeing
> >> path. But this may be too late because the background page reclaiming
> >> may introduce latency for some workloads. So, in this patch, during
> >> page allocation we will detect whether the number of free pages of the
> >> zone is below high watermark. If so, we will stop increasing PCP high
> >> in allocating path, decrease PCP high and free some pages in freeing
> >> path. With this, we can reduce the possibility of the premature
> >> background page reclaiming caused by too large PCP.
> >>
> >> The high watermark checking is done in allocating path to reduce the
> >> overhead in hotter freeing path.
> >>
> >> Signed-off-by: "Huang, Ying" <[email protected]>
> >> Cc: Andrew Morton <[email protected]>
> >> Cc: Mel Gorman <[email protected]>
> >> Cc: Vlastimil Babka <[email protected]>
> >> Cc: David Hildenbrand <[email protected]>
> >> Cc: Johannes Weiner <[email protected]>
> >> Cc: Dave Hansen <[email protected]>
> >> Cc: Michal Hocko <[email protected]>
> >> Cc: Pavel Tatashin <[email protected]>
> >> Cc: Matthew Wilcox <[email protected]>
> >> Cc: Christoph Lameter <[email protected]>
> >> ---
> >> include/linux/mmzone.h | 1 +
> >> mm/page_alloc.c | 33 +++++++++++++++++++++++++++++++--
> >> 2 files changed, 32 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
> >> index ec3f7daedcc7..c88770381aaf 100644
> >> --- a/include/linux/mmzone.h
> >> +++ b/include/linux/mmzone.h
> >> @@ -1018,6 +1018,7 @@ enum zone_flags {
> >> * Cleared when kswapd is woken.
> >> */
> >> ZONE_RECLAIM_ACTIVE, /* kswapd may be scanning the zone. */
> >> + ZONE_BELOW_HIGH, /* zone is below high watermark. */
> >> };
> >>
> >> static inline unsigned long zone_managed_pages(struct zone *zone)
> >> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> >> index 8382ad2cdfd4..253fc7d0498e 100644
> >> --- a/mm/page_alloc.c
> >> +++ b/mm/page_alloc.c
> >> @@ -2407,7 +2407,13 @@ static int nr_pcp_high(struct per_cpu_pages *pcp, struct zone *zone,
> >> return min(batch << 2, pcp->high);
> >> }
> >>
> >> - if (pcp->count >= high && high_min != high_max) {
> >> + if (high_min == high_max)
> >> + return high;
> >> +
> >> + if (test_bit(ZONE_BELOW_HIGH, &zone->flags)) {
> >> + pcp->high = max(high - (batch << pcp->free_factor), high_min);
> >> + high = max(pcp->count, high_min);
> >> + } else if (pcp->count >= high) {
> >> int need_high = (batch << pcp->free_factor) + batch;
> >>
> >> /* pcp->high should be large enough to hold batch freed pages */
> >> @@ -2457,6 +2463,10 @@ static void free_unref_page_commit(struct zone *zone, struct per_cpu_pages *pcp,
> >> if (pcp->count >= high) {
> >> free_pcppages_bulk(zone, nr_pcp_free(pcp, batch, high, free_high),
> >> pcp, pindex);
> >> + if (test_bit(ZONE_BELOW_HIGH, &zone->flags) &&
> >> + zone_watermark_ok(zone, 0, high_wmark_pages(zone),
> >> + ZONE_MOVABLE, 0))
> >> + clear_bit(ZONE_BELOW_HIGH, &zone->flags);
> >> }
> >> }
> >>
> >
> > This is a relatively fast path and freeing pages should not need to check
> > watermarks.
>
> Another stuff that mitigate the overhead is that the watermarks checking
> only occurs when we free pages from PCP to buddy. That is, in most
> cases, every 63 page freeing.
>
True
> > While the overhead is mitigated because it applies only when
> > the watermark is below high, that is also potentially an unbounded condition
> > if a workload is sized precisely enough. Why not clear this bit when kswapd
> > is going to sleep after reclaiming enough pages in a zone?
>
> IIUC, if the number of free pages is kept larger than the low watermark,
> then kswapd will have no opportunity to be waken up even if the number
> of free pages was ever smaller than the high watermark.
>
Also true and I did think of that later. I guess it's ok, the chances
are that the series overall offsets any micro-costs like this so I'm
happy. If, for some reason, this overhead is noticable (doubtful), then
it can be revisted.
Thanks.
--
Mel Gorman
SUSE Labs
Hello,
kernel test robot noticed a 14.6% improvement of netperf.Throughput_Mbps on:
commit: f5ddc662f07d7d99e9cfc5e07778e26c7394caf8 ("[PATCH -V3 3/9] mm, pcp: reduce lock contention for draining high-order pages")
url: https://github.com/intel-lab-lkp/linux/commits/Huang-Ying/mm-pcp-avoid-to-drain-PCP-when-process-exit/20231017-143633
base: https://git.kernel.org/cgit/linux/kernel/git/gregkh/driver-core.git 36b2d7dd5a8ac95c8c1e69bdc93c4a6e2dc28a23
patch link: https://lore.kernel.org/all/[email protected]/
patch subject: [PATCH -V3 3/9] mm, pcp: reduce lock contention for draining high-order pages
testcase: netperf
test machine: 128 threads 2 sockets Intel(R) Xeon(R) Gold 6338 CPU @ 2.00GHz (Ice Lake) with 256G memory
parameters:
ip: ipv4
runtime: 300s
nr_threads: 200%
cluster: cs-localhost
send_size: 10K
test: SCTP_STREAM_MANY
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20231027/[email protected]
=========================================================================================
cluster/compiler/cpufreq_governor/ip/kconfig/nr_threads/rootfs/runtime/send_size/tbox_group/test/testcase:
cs-localhost/gcc-12/performance/ipv4/x86_64-rhel-8.3/200%/debian-11.1-x86_64-20220510.cgz/300s/10K/lkp-icl-2sp2/SCTP_STREAM_MANY/netperf
commit:
c828e65251 ("cacheinfo: calculate size of per-CPU data cache slice")
f5ddc662f0 ("mm, pcp: reduce lock contention for draining high-order pages")
c828e65251502516 f5ddc662f07d7d99e9cfc5e0777
---------------- ---------------------------
%stddev %change %stddev
\ | \
26471 -11.1% 23520 uptime.idle
2.098e+10 -14.1% 1.802e+10 cpuidle..time
5.798e+08 +14.3% 6.628e+08 cpuidle..usage
1.329e+09 +14.7% 1.525e+09 numa-numastat.node0.local_node
1.329e+09 +14.7% 1.525e+09 numa-numastat.node0.numa_hit
1.336e+09 +14.6% 1.531e+09 numa-numastat.node1.local_node
1.336e+09 +14.6% 1.531e+09 numa-numastat.node1.numa_hit
1.329e+09 +14.7% 1.525e+09 numa-vmstat.node0.numa_hit
1.329e+09 +14.7% 1.525e+09 numa-vmstat.node0.numa_local
1.336e+09 +14.6% 1.531e+09 numa-vmstat.node1.numa_hit
1.336e+09 +14.6% 1.531e+09 numa-vmstat.node1.numa_local
26.31 ? 12% +33.0% 35.00 ? 10% perf-sched.wait_and_delay.avg.ms.__cond_resched.__kmem_cache_alloc_node.kmalloc_trace.sctp_datamsg_from_user.sctp_sendmsg_to_asoc
229.00 ? 13% -24.7% 172.33 ? 5% perf-sched.wait_and_delay.count.__cond_resched.__kmem_cache_alloc_node.kmalloc_trace.sctp_datamsg_from_user.sctp_sendmsg_to_asoc
929.50 ? 2% +8.2% 1005 ? 4% perf-sched.wait_and_delay.count.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64
26.30 ? 12% +33.0% 35.00 ? 10% perf-sched.wait_time.avg.ms.__cond_resched.__kmem_cache_alloc_node.kmalloc_trace.sctp_datamsg_from_user.sctp_sendmsg_to_asoc
53.98 -14.1% 46.36 vmstat.cpu.id
58.15 +17.6% 68.37 vmstat.procs.r
3720385 +15.6% 4301904 vmstat.system.cs
1991764 +14.5% 2281507 vmstat.system.in
53.69 -7.7 46.03 mpstat.cpu.all.idle%
2.10 +0.3 2.44 mpstat.cpu.all.irq%
7.25 +1.3 8.58 mpstat.cpu.all.soft%
35.74 +5.7 41.46 mpstat.cpu.all.sys%
1.23 +0.3 1.49 mpstat.cpu.all.usr%
2047040 +2.9% 2105598 proc-vmstat.nr_file_pages
1377160 +4.2% 1435588 proc-vmstat.nr_shmem
2.665e+09 +14.7% 3.056e+09 proc-vmstat.numa_hit
2.665e+09 +14.7% 3.056e+09 proc-vmstat.numa_local
1.534e+10 +14.6% 1.758e+10 proc-vmstat.pgalloc_normal
1.534e+10 +14.6% 1.758e+10 proc-vmstat.pgfree
1296 +16.3% 1507 turbostat.Avg_MHz
49.98 +8.1 58.12 turbostat.Busy%
5.797e+08 +14.3% 6.628e+08 turbostat.C1
53.88 -7.6 46.34 turbostat.C1%
50.02 -16.3% 41.88 turbostat.CPU%c1
6.081e+08 +14.5% 6.961e+08 turbostat.IRQ
391.82 +3.5% 405.41 turbostat.PkgWatt
2204 +14.6% 2527 netperf.ThroughputBoth_Mbps
564378 +14.6% 647027 netperf.ThroughputBoth_total_Mbps
2204 +14.6% 2527 netperf.Throughput_Mbps
564378 +14.6% 647027 netperf.Throughput_total_Mbps
146051 +5.9% 154705 netperf.time.involuntary_context_switches
3011 +16.8% 3516 netperf.time.percent_of_cpu_this_job_got
8875 +16.6% 10351 netperf.time.system_time
221.39 +18.0% 261.14 netperf.time.user_time
2759631 +8.0% 2981144 netperf.time.voluntary_context_switches
2.067e+09 +14.6% 2.369e+09 netperf.workload
2920531 +34.4% 3925407 sched_debug.cfs_rq:/.avg_vruntime.avg
3172407 ? 2% +36.5% 4331807 ? 3% sched_debug.cfs_rq:/.avg_vruntime.max
2801767 +35.2% 3787891 ? 2% sched_debug.cfs_rq:/.avg_vruntime.min
45404 ? 5% +33.3% 60516 ? 11% sched_debug.cfs_rq:/.avg_vruntime.stddev
2817265 ? 10% +40.6% 3961862 sched_debug.cfs_rq:/.left_vruntime.max
376003 ? 18% +51.2% 568331 ? 13% sched_debug.cfs_rq:/.left_vruntime.stddev
2920531 +34.4% 3925407 sched_debug.cfs_rq:/.min_vruntime.avg
3172407 ? 2% +36.5% 4331807 ? 3% sched_debug.cfs_rq:/.min_vruntime.max
2801767 +35.2% 3787891 ? 2% sched_debug.cfs_rq:/.min_vruntime.min
45404 ? 5% +33.3% 60516 ? 11% sched_debug.cfs_rq:/.min_vruntime.stddev
2817265 ? 10% +40.6% 3961862 sched_debug.cfs_rq:/.right_vruntime.max
376003 ? 18% +51.2% 568331 ? 13% sched_debug.cfs_rq:/.right_vruntime.stddev
157.25 ? 6% +13.3% 178.14 ? 4% sched_debug.cfs_rq:/.util_est_enqueued.avg
4361500 +15.5% 5035528 sched_debug.cpu.nr_switches.avg
4674667 +14.7% 5363125 sched_debug.cpu.nr_switches.max
3947619 +14.1% 4504637 ? 2% sched_debug.cpu.nr_switches.min
0.56 -3.7% 0.54 perf-stat.i.MPKI
2.293e+10 +14.3% 2.622e+10 perf-stat.i.branch-instructions
1.449e+08 +15.6% 1.675e+08 perf-stat.i.branch-misses
2.15 -0.1 2.05 perf-stat.i.cache-miss-rate%
67409238 +10.2% 74274510 perf-stat.i.cache-misses
3.199e+09 +15.7% 3.702e+09 perf-stat.i.cache-references
3765045 +15.6% 4353228 perf-stat.i.context-switches
1.42 +1.7% 1.45 perf-stat.i.cpi
1.717e+11 +16.5% 2e+11 perf-stat.i.cpu-cycles
5094 +51.1% 7695 ? 3% perf-stat.i.cpu-migrations
2554 +5.7% 2699 perf-stat.i.cycles-between-cache-misses
3.28e+10 +14.5% 3.756e+10 perf-stat.i.dTLB-loads
329792 ? 11% +37.3% 452936 ? 15% perf-stat.i.dTLB-store-misses
2.04e+10 +14.7% 2.339e+10 perf-stat.i.dTLB-stores
1.205e+11 +14.4% 1.379e+11 perf-stat.i.instructions
0.71 -1.7% 0.69 perf-stat.i.ipc
1.34 +16.5% 1.56 perf-stat.i.metric.GHz
221.29 +7.4% 237.74 perf-stat.i.metric.K/sec
619.67 +14.5% 709.77 perf-stat.i.metric.M/sec
7031738 +14.3% 8034255 perf-stat.i.node-load-misses
79.94 -1.3 78.62 perf-stat.i.node-store-miss-rate%
3349862 ? 2% +9.2% 3656880 perf-stat.i.node-stores
0.56 -3.7% 0.54 perf-stat.overall.MPKI
2.11 -0.1 2.01 perf-stat.overall.cache-miss-rate%
1.42 +1.8% 1.45 perf-stat.overall.cpi
2546 +5.7% 2692 perf-stat.overall.cycles-between-cache-misses
0.70 -1.8% 0.69 perf-stat.overall.ipc
79.91 -1.4 78.54 perf-stat.overall.node-store-miss-rate%
2.286e+10 +14.3% 2.614e+10 perf-stat.ps.branch-instructions
1.444e+08 +15.6% 1.669e+08 perf-stat.ps.branch-misses
67192773 +10.2% 74037940 perf-stat.ps.cache-misses
3.189e+09 +15.7% 3.69e+09 perf-stat.ps.cache-references
3753095 +15.6% 4339552 perf-stat.ps.context-switches
1.711e+11 +16.5% 1.994e+11 perf-stat.ps.cpu-cycles
5078 +51.1% 7674 ? 3% perf-stat.ps.cpu-migrations
3.269e+10 +14.5% 3.743e+10 perf-stat.ps.dTLB-loads
328489 ? 11% +37.3% 451131 ? 15% perf-stat.ps.dTLB-store-misses
2.033e+10 +14.7% 2.331e+10 perf-stat.ps.dTLB-stores
1.201e+11 +14.4% 1.374e+11 perf-stat.ps.instructions
7009249 +14.3% 8009170 perf-stat.ps.node-load-misses
3339511 ? 2% +9.2% 3645997 perf-stat.ps.node-stores
3.635e+13 +14.3% 4.155e+13 perf-stat.total.instructions
4.40 ? 2% -1.5 2.87 perf-profile.calltrace.cycles-pp.skb_release_data.kfree_skb_reason.sctp_recvmsg.inet_recvmsg.sock_recvmsg
5.83 -1.4 4.41 perf-profile.calltrace.cycles-pp.kfree_skb_reason.sctp_recvmsg.inet_recvmsg.sock_recvmsg.____sys_recvmsg
1.92 ? 3% -1.4 0.55 perf-profile.calltrace.cycles-pp.free_unref_page.skb_release_data.kfree_skb_reason.sctp_recvmsg.inet_recvmsg
22.33 -1.3 21.03 perf-profile.calltrace.cycles-pp.sctp_recvmsg.inet_recvmsg.sock_recvmsg.____sys_recvmsg.___sys_recvmsg
22.42 -1.3 21.12 perf-profile.calltrace.cycles-pp.inet_recvmsg.sock_recvmsg.____sys_recvmsg.___sys_recvmsg.__sys_recvmsg
22.75 -1.3 21.48 perf-profile.calltrace.cycles-pp.sock_recvmsg.____sys_recvmsg.___sys_recvmsg.__sys_recvmsg.do_syscall_64
23.44 -1.2 22.20 perf-profile.calltrace.cycles-pp.____sys_recvmsg.___sys_recvmsg.__sys_recvmsg.do_syscall_64.entry_SYSCALL_64_after_hwframe
24.65 -1.2 23.47 perf-profile.calltrace.cycles-pp.___sys_recvmsg.__sys_recvmsg.do_syscall_64.entry_SYSCALL_64_after_hwframe.recvmsg
25.14 -1.2 23.98 perf-profile.calltrace.cycles-pp.__sys_recvmsg.do_syscall_64.entry_SYSCALL_64_after_hwframe.recvmsg
25.46 -1.1 24.31 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.recvmsg
25.59 -1.1 24.46 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.recvmsg
26.47 -1.1 25.36 perf-profile.calltrace.cycles-pp.recvmsg
3.57 ? 6% -0.6 2.93 ? 9% perf-profile.calltrace.cycles-pp.rmqueue.get_page_from_freelist.__alloc_pages.__kmalloc_large_node.__kmalloc_node_track_caller
5.22 ? 2% -0.4 4.79 perf-profile.calltrace.cycles-pp.__alloc_pages.__kmalloc_large_node.__kmalloc_node_track_caller.kmalloc_reserve.__alloc_skb
4.76 ? 2% -0.4 4.33 perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_pages.__kmalloc_large_node.__kmalloc_node_track_caller.kmalloc_reserve
0.96 -0.4 0.59 ? 2% perf-profile.calltrace.cycles-pp.release_sock.sctp_recvmsg.inet_recvmsg.sock_recvmsg.____sys_recvmsg
3.16 ? 2% -0.3 2.84 perf-profile.calltrace.cycles-pp.__kmalloc_node_track_caller.kmalloc_reserve.__alloc_skb.sctp_packet_transmit.sctp_outq_flush
3.14 ? 2% -0.3 2.82 perf-profile.calltrace.cycles-pp.__kmalloc_large_node.__kmalloc_node_track_caller.kmalloc_reserve.__alloc_skb.sctp_packet_transmit
3.18 ? 2% -0.3 2.86 perf-profile.calltrace.cycles-pp.kmalloc_reserve.__alloc_skb.sctp_packet_transmit.sctp_outq_flush.sctp_cmd_interpreter
3.44 ? 2% -0.3 3.13 perf-profile.calltrace.cycles-pp.__alloc_skb.sctp_packet_transmit.sctp_outq_flush.sctp_cmd_interpreter.sctp_do_sm
1.62 ? 3% -0.3 1.34 ? 2% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.rmqueue.get_page_from_freelist.__alloc_pages.__kmalloc_large_node
1.49 ? 3% -0.3 1.22 ? 3% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.rmqueue.get_page_from_freelist.__alloc_pages
1.46 ? 2% -0.2 1.25 ? 2% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.__free_pages_ok.skb_release_data.kfree_skb_reason
1.62 ? 2% -0.2 1.43 ? 2% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.__free_pages_ok.skb_release_data.kfree_skb_reason.sctp_recvmsg
1.99 ? 2% -0.2 1.80 perf-profile.calltrace.cycles-pp.__free_pages_ok.skb_release_data.kfree_skb_reason.sctp_recvmsg.inet_recvmsg
0.76 -0.2 0.58 perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.acpi_safe_halt.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter
0.85 -0.1 0.74 perf-profile.calltrace.cycles-pp.__slab_free.sctp_recvmsg.inet_recvmsg.sock_recvmsg.____sys_recvmsg
0.84 -0.1 0.73 perf-profile.calltrace.cycles-pp.free_unref_page_commit.free_unref_page.skb_release_data.consume_skb.sctp_chunk_put
1.37 -0.1 1.28 perf-profile.calltrace.cycles-pp.free_unref_page.skb_release_data.consume_skb.sctp_chunk_put.sctp_outq_sack
2.65 -0.1 2.57 perf-profile.calltrace.cycles-pp.kmalloc_reserve.__alloc_skb._sctp_make_chunk.sctp_make_datafrag_empty.sctp_datamsg_from_user
2.56 -0.1 2.48 perf-profile.calltrace.cycles-pp.__kmalloc_node_track_caller.kmalloc_reserve.__alloc_skb._sctp_make_chunk.sctp_make_datafrag_empty
2.49 ? 2% -0.1 2.42 perf-profile.calltrace.cycles-pp.__kmalloc_large_node.__kmalloc_node_track_caller.kmalloc_reserve.__alloc_skb._sctp_make_chunk
1.92 -0.1 1.85 perf-profile.calltrace.cycles-pp.skb_release_data.consume_skb.sctp_chunk_put.sctp_outq_sack.sctp_cmd_interpreter
0.62 +0.0 0.64 perf-profile.calltrace.cycles-pp.simple_copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.sctp_recvmsg.inet_recvmsg
0.65 +0.0 0.68 perf-profile.calltrace.cycles-pp.sctp_chunk_put.sctp_ulpevent_free.sctp_recvmsg.inet_recvmsg.sock_recvmsg
0.89 +0.0 0.93 perf-profile.calltrace.cycles-pp.copy_msghdr_from_user.___sys_recvmsg.__sys_recvmsg.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.24 +0.0 1.28 perf-profile.calltrace.cycles-pp.try_to_wake_up.autoremove_wake_function.__wake_up_common.__wake_up_common_lock.sctp_data_ready
0.56 ? 2% +0.0 0.60 perf-profile.calltrace.cycles-pp.sctp_packet_config.sctp_outq_select_transport.sctp_outq_flush_data.sctp_outq_flush.sctp_cmd_interpreter
1.32 +0.0 1.36 perf-profile.calltrace.cycles-pp.autoremove_wake_function.__wake_up_common.__wake_up_common_lock.sctp_data_ready.sctp_ulpq_tail_event
1.29 +0.0 1.33 perf-profile.calltrace.cycles-pp.sctp_ulpevent_free.sctp_recvmsg.inet_recvmsg.sock_recvmsg.____sys_recvmsg
0.71 ? 2% +0.0 0.75 perf-profile.calltrace.cycles-pp.sctp_outq_select_transport.sctp_outq_flush_data.sctp_outq_flush.sctp_cmd_interpreter.sctp_do_sm
0.61 +0.0 0.66 perf-profile.calltrace.cycles-pp.dequeue_entity.dequeue_task_fair.__schedule.schedule.schedule_timeout
0.62 +0.1 0.67 perf-profile.calltrace.cycles-pp.enqueue_entity.enqueue_task_fair.activate_task.ttwu_do_activate.sched_ttwu_pending
1.50 +0.1 1.56 perf-profile.calltrace.cycles-pp.__wake_up_common.__wake_up_common_lock.sctp_data_ready.sctp_ulpq_tail_event.sctp_ulpq_tail_data
1.58 +0.1 1.64 perf-profile.calltrace.cycles-pp.__wake_up_common_lock.sctp_data_ready.sctp_ulpq_tail_event.sctp_ulpq_tail_data.sctp_cmd_interpreter
0.70 +0.1 0.76 perf-profile.calltrace.cycles-pp.dequeue_task_fair.__schedule.schedule.schedule_timeout.sctp_skb_recv_datagram
1.02 +0.1 1.08 perf-profile.calltrace.cycles-pp.ttwu_do_activate.sched_ttwu_pending.__flush_smp_call_function_queue.__sysvec_call_function_single.sysvec_call_function_single
2.02 +0.1 2.09 perf-profile.calltrace.cycles-pp.sctp_outq_flush_data.sctp_outq_flush.sctp_cmd_interpreter.sctp_do_sm.sctp_primitive_SEND
1.86 +0.1 1.93 perf-profile.calltrace.cycles-pp.sctp_data_ready.sctp_ulpq_tail_event.sctp_ulpq_tail_data.sctp_cmd_interpreter.sctp_do_sm
0.76 +0.1 0.83 perf-profile.calltrace.cycles-pp.activate_task.ttwu_do_activate.sched_ttwu_pending.__flush_smp_call_function_queue.__sysvec_call_function_single
0.73 +0.1 0.80 perf-profile.calltrace.cycles-pp.enqueue_task_fair.activate_task.ttwu_do_activate.sched_ttwu_pending.__flush_smp_call_function_queue
0.89 +0.1 0.96 perf-profile.calltrace.cycles-pp.__schedule.schedule_idle.do_idle.cpu_startup_entry.start_secondary
0.82 +0.1 0.89 perf-profile.calltrace.cycles-pp.__sk_mem_reduce_allocated.sctp_wfree.skb_release_head_state.consume_skb.sctp_chunk_put
0.95 +0.1 1.03 perf-profile.calltrace.cycles-pp.schedule_idle.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
2.06 +0.1 2.14 perf-profile.calltrace.cycles-pp.sctp_ulpq_tail_event.sctp_ulpq_tail_data.sctp_cmd_interpreter.sctp_do_sm.sctp_assoc_bh_rcv
3.68 +0.1 3.76 perf-profile.calltrace.cycles-pp.copyin._copy_from_iter.sctp_user_addto_chunk.sctp_datamsg_from_user.sctp_sendmsg_to_asoc
0.98 +0.1 1.06 perf-profile.calltrace.cycles-pp.__sk_mem_reduce_allocated.skb_release_head_state.kfree_skb_reason.sctp_recvmsg.inet_recvmsg
1.34 +0.1 1.43 perf-profile.calltrace.cycles-pp.sched_ttwu_pending.__flush_smp_call_function_queue.__sysvec_call_function_single.sysvec_call_function_single.asm_sysvec_call_function_single
1.38 +0.1 1.47 perf-profile.calltrace.cycles-pp.sctp_wfree.skb_release_head_state.consume_skb.sctp_chunk_put.sctp_outq_sack
1.54 +0.1 1.63 perf-profile.calltrace.cycles-pp.skb_release_head_state.consume_skb.sctp_chunk_put.sctp_outq_sack.sctp_cmd_interpreter
1.25 ? 2% +0.1 1.35 perf-profile.calltrace.cycles-pp.__sk_mem_raise_allocated.__sk_mem_schedule.sctp_sendmsg_to_asoc.sctp_sendmsg.sock_sendmsg
1.28 ? 2% +0.1 1.38 perf-profile.calltrace.cycles-pp.__sk_mem_schedule.sctp_sendmsg_to_asoc.sctp_sendmsg.sock_sendmsg.____sys_sendmsg
1.82 +0.1 1.93 perf-profile.calltrace.cycles-pp.__flush_smp_call_function_queue.__sysvec_call_function_single.sysvec_call_function_single.asm_sysvec_call_function_single.acpi_safe_halt
2.00 +0.1 2.11 perf-profile.calltrace.cycles-pp.__sysvec_call_function_single.sysvec_call_function_single.asm_sysvec_call_function_single.acpi_safe_halt.acpi_idle_enter
1.39 +0.1 1.50 perf-profile.calltrace.cycles-pp.skb_release_head_state.kfree_skb_reason.sctp_recvmsg.inet_recvmsg.sock_recvmsg
4.39 +0.1 4.51 perf-profile.calltrace.cycles-pp.acpi_safe_halt.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call
2.68 +0.2 2.84 perf-profile.calltrace.cycles-pp.sysvec_call_function_single.asm_sysvec_call_function_single.acpi_safe_halt.acpi_idle_enter.cpuidle_enter_state
2.98 +0.2 3.14 perf-profile.calltrace.cycles-pp.sctp_ulpevent_make_rcvmsg.sctp_ulpq_tail_data.sctp_cmd_interpreter.sctp_do_sm.sctp_assoc_bh_rcv
1.88 +0.2 2.06 perf-profile.calltrace.cycles-pp.__schedule.schedule.schedule_timeout.sctp_skb_recv_datagram.sctp_recvmsg
0.34 ? 70% +0.2 0.54 perf-profile.calltrace.cycles-pp.pick_next_task_fair.__schedule.schedule.schedule_timeout.sctp_skb_recv_datagram
10.32 +0.2 10.53 perf-profile.calltrace.cycles-pp.sctp_do_sm.sctp_primitive_SEND.sctp_sendmsg_to_asoc.sctp_sendmsg.sock_sendmsg
3.60 +0.2 3.81 perf-profile.calltrace.cycles-pp.sctp_skb_recv_datagram.sctp_recvmsg.inet_recvmsg.sock_recvmsg.____sys_recvmsg
1.94 +0.2 2.14 perf-profile.calltrace.cycles-pp.schedule.schedule_timeout.sctp_skb_recv_datagram.sctp_recvmsg.inet_recvmsg
2.20 +0.2 2.41 perf-profile.calltrace.cycles-pp.schedule_timeout.sctp_skb_recv_datagram.sctp_recvmsg.inet_recvmsg.sock_recvmsg
10.93 +0.2 11.16 perf-profile.calltrace.cycles-pp.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle
10.51 +0.2 10.74 perf-profile.calltrace.cycles-pp.sctp_cmd_interpreter.sctp_do_sm.sctp_primitive_SEND.sctp_sendmsg_to_asoc.sctp_sendmsg
7.26 +0.2 7.50 perf-profile.calltrace.cycles-pp.copyout._copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.sctp_recvmsg
11.17 +0.2 11.42 perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry
5.40 +0.2 5.64 perf-profile.calltrace.cycles-pp.sctp_ulpq_tail_data.sctp_cmd_interpreter.sctp_do_sm.sctp_assoc_bh_rcv.sctp_rcv
11.25 +0.2 11.50 perf-profile.calltrace.cycles-pp.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary
7.38 +0.3 7.64 perf-profile.calltrace.cycles-pp._copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.sctp_recvmsg.inet_recvmsg
20.03 +0.3 20.29 perf-profile.calltrace.cycles-pp.sctp_backlog_rcv.__release_sock.release_sock.sctp_sendmsg.sock_sendmsg
20.09 +0.3 20.36 perf-profile.calltrace.cycles-pp.__release_sock.release_sock.sctp_sendmsg.sock_sendmsg.____sys_sendmsg
20.30 +0.3 20.57 perf-profile.calltrace.cycles-pp.release_sock.sctp_sendmsg.sock_sendmsg.____sys_sendmsg.___sys_sendmsg
8.40 +0.3 8.68 perf-profile.calltrace.cycles-pp.__skb_datagram_iter.skb_copy_datagram_iter.sctp_recvmsg.inet_recvmsg.sock_recvmsg
8.44 +0.3 8.72 perf-profile.calltrace.cycles-pp.skb_copy_datagram_iter.sctp_recvmsg.inet_recvmsg.sock_recvmsg.____sys_recvmsg
11.85 +0.3 12.14 perf-profile.calltrace.cycles-pp.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
11.22 +0.3 11.52 perf-profile.calltrace.cycles-pp.sctp_packet_transmit.sctp_outq_flush.sctp_cmd_interpreter.sctp_do_sm.sctp_primitive_SEND
13.26 +0.3 13.61 perf-profile.calltrace.cycles-pp.sctp_outq_flush.sctp_cmd_interpreter.sctp_do_sm.sctp_primitive_SEND.sctp_sendmsg_to_asoc
13.21 +0.4 13.59 perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
13.25 +0.4 13.64 perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64_no_verify
13.24 +0.4 13.62 perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
13.34 +0.4 13.74 perf-profile.calltrace.cycles-pp.secondary_startup_64_no_verify
15.70 +0.4 16.12 perf-profile.calltrace.cycles-pp.sctp_primitive_SEND.sctp_sendmsg_to_asoc.sctp_sendmsg.sock_sendmsg.____sys_sendmsg
0.55 +0.5 1.02 ? 19% perf-profile.calltrace.cycles-pp.__sk_mem_raise_allocated.__sk_mem_schedule.sctp_ulpevent_make_rcvmsg.sctp_ulpq_tail_data.sctp_cmd_interpreter
0.66 ? 28% +0.5 1.14 perf-profile.calltrace.cycles-pp.__sk_mem_schedule.sctp_ulpevent_make_rcvmsg.sctp_ulpq_tail_data.sctp_cmd_interpreter.sctp_do_sm
0.00 +0.5 0.54 perf-profile.calltrace.cycles-pp.sctp_sf_eat_data_6_2.sctp_do_sm.sctp_assoc_bh_rcv.sctp_rcv.ip_protocol_deliver_rcu
51.26 +0.5 51.80 perf-profile.calltrace.cycles-pp.sctp_sendmsg.sock_sendmsg.____sys_sendmsg.___sys_sendmsg.__sys_sendmsg
15.28 +0.5 15.82 perf-profile.calltrace.cycles-pp.asm_sysvec_call_function_single.acpi_safe_halt.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter
51.76 +0.6 52.32 perf-profile.calltrace.cycles-pp.sock_sendmsg.____sys_sendmsg.___sys_sendmsg.__sys_sendmsg.do_syscall_64
53.77 +0.6 54.34 perf-profile.calltrace.cycles-pp.____sys_sendmsg.___sys_sendmsg.__sys_sendmsg.do_syscall_64.entry_SYSCALL_64_after_hwframe
6.06 ? 2% -2.4 3.68 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
5.94 ? 2% -2.2 3.75 perf-profile.children.cycles-pp._raw_spin_lock_irqsave
6.84 -1.9 4.97 perf-profile.children.cycles-pp.skb_release_data
3.64 -1.7 1.92 perf-profile.children.cycles-pp.free_unref_page
2.04 ? 2% -1.7 0.34 ? 2% perf-profile.children.cycles-pp.free_pcppages_bulk
5.84 -1.4 4.42 perf-profile.children.cycles-pp.kfree_skb_reason
22.43 -1.3 21.14 perf-profile.children.cycles-pp.inet_recvmsg
22.67 -1.3 21.39 perf-profile.children.cycles-pp.sctp_recvmsg
22.76 -1.3 21.50 perf-profile.children.cycles-pp.sock_recvmsg
23.46 -1.2 22.22 perf-profile.children.cycles-pp.____sys_recvmsg
24.68 -1.2 23.50 perf-profile.children.cycles-pp.___sys_recvmsg
25.16 -1.2 24.00 perf-profile.children.cycles-pp.__sys_recvmsg
26.69 -1.1 25.59 perf-profile.children.cycles-pp.recvmsg
82.77 -0.5 82.24 perf-profile.children.cycles-pp.do_syscall_64
83.14 -0.5 82.63 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
5.02 -0.5 4.53 perf-profile.children.cycles-pp.get_page_from_freelist
5.46 -0.5 4.98 perf-profile.children.cycles-pp.__alloc_pages
5.96 -0.5 5.50 perf-profile.children.cycles-pp.__kmalloc_node_track_caller
6.21 -0.5 5.76 perf-profile.children.cycles-pp.kmalloc_reserve
3.86 -0.5 3.41 perf-profile.children.cycles-pp.rmqueue
5.88 -0.5 5.44 perf-profile.children.cycles-pp.__kmalloc_large_node
7.47 -0.4 7.07 perf-profile.children.cycles-pp.__alloc_skb
0.65 ? 3% -0.3 0.30 ? 5% perf-profile.children.cycles-pp.sctp_wait_for_sndbuf
1.91 -0.3 1.58 perf-profile.children.cycles-pp._raw_spin_lock_bh
1.78 -0.3 1.46 perf-profile.children.cycles-pp.lock_sock_nested
4.43 -0.2 4.22 perf-profile.children.cycles-pp.consume_skb
6.00 -0.2 5.80 perf-profile.children.cycles-pp.sctp_outq_sack
5.82 -0.2 5.62 perf-profile.children.cycles-pp.sctp_chunk_put
2.00 ? 2% -0.2 1.82 ? 2% perf-profile.children.cycles-pp.__free_pages_ok
1.20 -0.2 1.04 perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt
1.27 -0.1 1.16 perf-profile.children.cycles-pp.__slab_free
0.39 -0.1 0.32 ? 2% perf-profile.children.cycles-pp.__free_one_page
0.86 ? 2% -0.1 0.79 perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt
0.42 -0.1 0.36 ? 2% perf-profile.children.cycles-pp.__zone_watermark_ok
0.45 ? 2% -0.1 0.40 ? 2% perf-profile.children.cycles-pp.rmqueue_bulk
0.54 -0.0 0.51 perf-profile.children.cycles-pp.__list_add_valid_or_report
0.65 ? 2% -0.0 0.62 perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt
0.47 ? 2% -0.0 0.44 ? 2% perf-profile.children.cycles-pp.__kmalloc
0.25 ? 3% -0.0 0.22 ? 2% perf-profile.children.cycles-pp.__irq_exit_rcu
0.24 ? 4% -0.0 0.22 ? 3% perf-profile.children.cycles-pp.perf_event_task_tick
0.24 ? 3% -0.0 0.22 ? 3% perf-profile.children.cycles-pp.perf_adjust_freq_unthr_context
0.15 ? 5% -0.0 0.13 ? 4% perf-profile.children.cycles-pp.__intel_pmu_enable_all
0.11 ? 4% -0.0 0.09 ? 5% perf-profile.children.cycles-pp.sctp_assoc_rwnd_increase
0.06 +0.0 0.07 perf-profile.children.cycles-pp.ct_idle_exit
0.12 ? 3% +0.0 0.13 ? 2% perf-profile.children.cycles-pp.get_pfnblock_flags_mask
0.42 +0.0 0.44 perf-profile.children.cycles-pp.free_unref_page_prepare
0.14 ? 2% +0.0 0.16 ? 3% perf-profile.children.cycles-pp.check_stack_object
0.13 ? 2% +0.0 0.15 ? 3% perf-profile.children.cycles-pp.__mod_lruvec_page_state
0.27 +0.0 0.28 perf-profile.children.cycles-pp.update_curr
0.22 +0.0 0.24 ? 2% perf-profile.children.cycles-pp.__switch_to_asm
0.16 ? 2% +0.0 0.18 ? 3% perf-profile.children.cycles-pp.__update_load_avg_se
0.29 ? 2% +0.0 0.30 perf-profile.children.cycles-pp.sctp_outq_flush_ctrl
0.42 +0.0 0.44 perf-profile.children.cycles-pp.free_large_kmalloc
0.13 ? 2% +0.0 0.15 ? 7% perf-profile.children.cycles-pp.update_cfs_group
0.40 +0.0 0.42 ? 2% perf-profile.children.cycles-pp.loopback_xmit
0.24 ? 3% +0.0 0.26 ? 2% perf-profile.children.cycles-pp.__update_load_avg_cfs_rq
0.45 +0.0 0.47 perf-profile.children.cycles-pp.dev_hard_start_xmit
0.20 +0.0 0.23 ? 3% perf-profile.children.cycles-pp.set_next_entity
0.63 +0.0 0.65 perf-profile.children.cycles-pp.simple_copy_to_iter
0.13 ? 3% +0.0 0.15 ? 3% perf-profile.children.cycles-pp.sk_leave_memory_pressure
0.30 +0.0 0.32 ? 2% perf-profile.children.cycles-pp.sctp_inet_skb_msgname
0.54 ? 2% +0.0 0.57 ? 2% perf-profile.children.cycles-pp.__copy_skb_header
0.31 +0.0 0.34 perf-profile.children.cycles-pp.___perf_sw_event
0.27 ? 3% +0.0 0.30 ? 2% perf-profile.children.cycles-pp.security_socket_recvmsg
0.24 ? 3% +0.0 0.26 perf-profile.children.cycles-pp.ipv4_dst_check
0.42 ? 2% +0.0 0.44 ? 3% perf-profile.children.cycles-pp.page_counter_try_charge
1.30 +0.0 1.33 perf-profile.children.cycles-pp.try_to_wake_up
0.42 +0.0 0.45 perf-profile.children.cycles-pp.__mod_node_page_state
0.79 +0.0 0.82 perf-profile.children.cycles-pp.__skb_clone
0.44 +0.0 0.48 perf-profile.children.cycles-pp.aa_sk_perm
0.30 +0.0 0.33 ? 4% perf-profile.children.cycles-pp.accept_connection
0.30 +0.0 0.33 ? 4% perf-profile.children.cycles-pp.spawn_child
0.30 +0.0 0.33 ? 4% perf-profile.children.cycles-pp.process_requests
0.36 +0.0 0.40 perf-profile.children.cycles-pp.prepare_task_switch
0.28 ? 2% +0.0 0.31 ? 5% perf-profile.children.cycles-pp.recv_sctp_stream_1toMany
0.66 +0.0 0.70 perf-profile.children.cycles-pp.sctp_addrs_lookup_transport
0.69 +0.0 0.72 perf-profile.children.cycles-pp.__sctp_rcv_lookup
0.39 ? 3% +0.0 0.43 perf-profile.children.cycles-pp.dst_release
1.36 +0.0 1.40 perf-profile.children.cycles-pp.autoremove_wake_function
0.77 +0.0 0.81 perf-profile.children.cycles-pp.kmem_cache_alloc_node
1.31 +0.0 1.35 perf-profile.children.cycles-pp.sctp_ulpevent_free
0.92 +0.0 0.96 perf-profile.children.cycles-pp.try_charge_memcg
0.64 +0.0 0.69 perf-profile.children.cycles-pp.dequeue_entity
0.83 +0.0 0.88 perf-profile.children.cycles-pp.sctp_packet_config
2.48 +0.0 2.53 perf-profile.children.cycles-pp.copy_msghdr_from_user
0.61 ? 3% +0.1 0.66 ? 2% perf-profile.children.cycles-pp.mem_cgroup_uncharge_skmem
0.66 +0.1 0.71 perf-profile.children.cycles-pp.enqueue_entity
1.56 +0.1 1.61 perf-profile.children.cycles-pp.__wake_up_common
1.39 +0.1 1.45 perf-profile.children.cycles-pp.kmem_cache_free
1.02 ? 2% +0.1 1.08 perf-profile.children.cycles-pp.sctp_outq_select_transport
0.00 +0.1 0.06 ? 9% perf-profile.children.cycles-pp.pick_next_task_idle
1.64 +0.1 1.70 perf-profile.children.cycles-pp.__wake_up_common_lock
0.86 ? 3% +0.1 0.92 perf-profile.children.cycles-pp.pick_next_task_fair
0.58 +0.1 0.64 perf-profile.children.cycles-pp.update_load_avg
1.56 +0.1 1.62 perf-profile.children.cycles-pp.__check_object_size
0.71 +0.1 0.77 perf-profile.children.cycles-pp.dequeue_task_fair
0.86 +0.1 0.93 perf-profile.children.cycles-pp.sctp_eat_data
1.92 +0.1 1.99 perf-profile.children.cycles-pp.sctp_data_ready
1.05 +0.1 1.12 perf-profile.children.cycles-pp.ttwu_do_activate
0.26 ? 32% +0.1 0.33 ? 4% perf-profile.children.cycles-pp.accept_connections
2.16 +0.1 2.22 perf-profile.children.cycles-pp.sctp_ulpq_tail_event
0.76 +0.1 0.83 perf-profile.children.cycles-pp.enqueue_task_fair
0.78 +0.1 0.86 perf-profile.children.cycles-pp.activate_task
0.98 +0.1 1.05 perf-profile.children.cycles-pp.sctp_sf_eat_data_6_2
0.97 +0.1 1.04 perf-profile.children.cycles-pp.schedule_idle
3.22 +0.1 3.30 perf-profile.children.cycles-pp.sctp_outq_flush_data
1.78 +0.1 1.85 perf-profile.children.cycles-pp.mem_cgroup_charge_skmem
1.48 +0.1 1.56 perf-profile.children.cycles-pp.sctp_wfree
1.38 +0.1 1.46 perf-profile.children.cycles-pp.sched_ttwu_pending
3.80 +0.1 3.89 perf-profile.children.cycles-pp.copyin
3.92 +0.1 4.00 perf-profile.children.cycles-pp._copy_from_iter
10.14 +0.1 10.24 perf-profile.children.cycles-pp.sctp_datamsg_from_user
1.87 +0.1 1.97 perf-profile.children.cycles-pp.__flush_smp_call_function_queue
4.48 +0.1 4.59 perf-profile.children.cycles-pp.sctp_user_addto_chunk
2.04 +0.1 2.15 perf-profile.children.cycles-pp.__sysvec_call_function_single
6.96 +0.1 7.09 perf-profile.children.cycles-pp.__memcpy
7.57 +0.1 7.71 perf-profile.children.cycles-pp.sctp_packet_pack
3.20 +0.1 3.34 perf-profile.children.cycles-pp.sctp_ulpevent_make_rcvmsg
1.85 +0.2 2.00 perf-profile.children.cycles-pp.__sk_mem_reduce_allocated
12.41 +0.2 12.56 perf-profile.children.cycles-pp.sctp_rcv
2.74 +0.2 2.90 perf-profile.children.cycles-pp.sysvec_call_function_single
2.41 +0.2 2.57 perf-profile.children.cycles-pp.__sk_mem_raise_allocated
2.48 +0.2 2.65 perf-profile.children.cycles-pp.__sk_mem_schedule
13.86 +0.2 14.04 perf-profile.children.cycles-pp.__do_softirq
13.28 +0.2 13.45 perf-profile.children.cycles-pp.process_backlog
13.31 +0.2 13.49 perf-profile.children.cycles-pp.__napi_poll
13.45 +0.2 13.63 perf-profile.children.cycles-pp.net_rx_action
2.04 +0.2 2.21 perf-profile.children.cycles-pp.schedule
2.28 +0.2 2.46 perf-profile.children.cycles-pp.schedule_timeout
12.53 +0.2 12.71 perf-profile.children.cycles-pp.ip_local_deliver_finish
13.05 +0.2 13.23 perf-profile.children.cycles-pp.__netif_receive_skb_one_core
12.51 +0.2 12.69 perf-profile.children.cycles-pp.ip_protocol_deliver_rcu
29.73 +0.2 29.92 perf-profile.children.cycles-pp.sctp_outq_flush
3.63 +0.2 3.84 perf-profile.children.cycles-pp.sctp_skb_recv_datagram
13.78 +0.2 13.98 perf-profile.children.cycles-pp.do_softirq
5.68 +0.2 5.89 perf-profile.children.cycles-pp.sctp_ulpq_tail_data
13.98 +0.2 14.20 perf-profile.children.cycles-pp.__local_bh_enable_ip
3.22 +0.2 3.44 perf-profile.children.cycles-pp.skb_release_head_state
2.90 +0.2 3.13 perf-profile.children.cycles-pp.__schedule
36.67 +0.2 36.90 perf-profile.children.cycles-pp.sctp_do_sm
36.13 +0.2 36.36 perf-profile.children.cycles-pp.sctp_cmd_interpreter
10.99 +0.2 11.22 perf-profile.children.cycles-pp.acpi_safe_halt
7.30 +0.2 7.54 perf-profile.children.cycles-pp.copyout
14.37 +0.2 14.61 perf-profile.children.cycles-pp.__dev_queue_xmit
11.01 +0.2 11.26 perf-profile.children.cycles-pp.acpi_idle_enter
14.53 +0.2 14.78 perf-profile.children.cycles-pp.ip_finish_output2
7.40 +0.3 7.65 perf-profile.children.cycles-pp._copy_to_iter
15.04 +0.3 15.29 perf-profile.children.cycles-pp.__ip_queue_xmit
11.26 +0.3 11.52 perf-profile.children.cycles-pp.cpuidle_enter_state
11.33 +0.3 11.59 perf-profile.children.cycles-pp.cpuidle_enter
29.10 +0.3 29.37 perf-profile.children.cycles-pp.sctp_sendmsg_to_asoc
8.41 +0.3 8.69 perf-profile.children.cycles-pp.__skb_datagram_iter
8.45 +0.3 8.73 perf-profile.children.cycles-pp.skb_copy_datagram_iter
11.94 +0.3 12.25 perf-profile.children.cycles-pp.cpuidle_idle_call
9.15 +0.4 9.52 perf-profile.children.cycles-pp.asm_sysvec_call_function_single
13.25 +0.4 13.64 perf-profile.children.cycles-pp.start_secondary
13.32 +0.4 13.71 perf-profile.children.cycles-pp.do_idle
13.34 +0.4 13.74 perf-profile.children.cycles-pp.secondary_startup_64_no_verify
13.34 +0.4 13.74 perf-profile.children.cycles-pp.cpu_startup_entry
16.00 +0.4 16.41 perf-profile.children.cycles-pp.sctp_primitive_SEND
52.23 +0.6 52.80 perf-profile.children.cycles-pp.sock_sendmsg
52.14 +0.6 52.72 perf-profile.children.cycles-pp.sctp_sendmsg
54.28 +0.6 54.87 perf-profile.children.cycles-pp.____sys_sendmsg
56.24 +0.6 56.85 perf-profile.children.cycles-pp.___sys_sendmsg
56.83 +0.6 57.45 perf-profile.children.cycles-pp.__sys_sendmsg
6.05 ? 2% -2.4 3.68 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
0.97 -0.2 0.81 perf-profile.self.cycles-pp._raw_spin_lock_irqsave
1.26 -0.1 1.14 perf-profile.self.cycles-pp.__slab_free
1.22 -0.1 1.14 perf-profile.self.cycles-pp.rmqueue
0.40 -0.1 0.35 ? 2% perf-profile.self.cycles-pp.__zone_watermark_ok
0.46 -0.0 0.42 perf-profile.self.cycles-pp.__list_add_valid_or_report
0.18 ? 4% -0.0 0.16 ? 4% perf-profile.self.cycles-pp.__free_one_page
0.15 ? 5% -0.0 0.13 ? 4% perf-profile.self.cycles-pp.__intel_pmu_enable_all
0.10 ? 3% +0.0 0.11 perf-profile.self.cycles-pp._copy_to_iter
0.31 +0.0 0.32 perf-profile.self.cycles-pp.sctp_v4_xmit
0.24 +0.0 0.26 ? 2% perf-profile.self.cycles-pp.__sys_sendmsg
0.06 ? 7% +0.0 0.08 perf-profile.self.cycles-pp.dequeue_task_fair
0.07 ? 5% +0.0 0.09 ? 5% perf-profile.self.cycles-pp.newidle_balance
0.40 +0.0 0.42 perf-profile.self.cycles-pp.sctp_skb_recv_datagram
0.19 ? 3% +0.0 0.20 ? 2% perf-profile.self.cycles-pp.menu_select
0.11 ? 4% +0.0 0.13 ? 4% perf-profile.self.cycles-pp.enqueue_task_fair
0.37 +0.0 0.39 perf-profile.self.cycles-pp.__check_object_size
0.78 +0.0 0.80 perf-profile.self.cycles-pp._raw_spin_lock_bh
0.22 ? 2% +0.0 0.24 ? 2% perf-profile.self.cycles-pp.__update_load_avg_cfs_rq
0.21 +0.0 0.23 perf-profile.self.cycles-pp.__switch_to_asm
0.27 +0.0 0.30 perf-profile.self.cycles-pp.___perf_sw_event
0.38 +0.0 0.40 ? 2% perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe
0.12 ? 3% +0.0 0.15 ? 6% perf-profile.self.cycles-pp.update_cfs_group
0.35 +0.0 0.38 perf-profile.self.cycles-pp.____sys_recvmsg
0.05 +0.0 0.08 ? 6% perf-profile.self.cycles-pp.schedule
0.20 +0.0 0.22 ? 2% perf-profile.self.cycles-pp.update_load_avg
0.28 ? 2% +0.0 0.31 perf-profile.self.cycles-pp.sctp_inet_skb_msgname
0.23 ? 3% +0.0 0.25 perf-profile.self.cycles-pp.ipv4_dst_check
0.12 ? 4% +0.0 0.14 ? 3% perf-profile.self.cycles-pp.sk_leave_memory_pressure
0.58 +0.0 0.61 ? 2% perf-profile.self.cycles-pp.kmem_cache_alloc_node
0.41 +0.0 0.44 ? 2% perf-profile.self.cycles-pp.__mod_node_page_state
0.36 +0.0 0.39 ? 2% perf-profile.self.cycles-pp.aa_sk_perm
0.27 ? 3% +0.0 0.30 ? 5% perf-profile.self.cycles-pp.recv_sctp_stream_1toMany
0.78 +0.0 0.82 perf-profile.self.cycles-pp.sctp_recvmsg
0.71 +0.0 0.74 perf-profile.self.cycles-pp.sctp_sendmsg
0.38 ? 3% +0.0 0.42 ? 2% perf-profile.self.cycles-pp.dst_release
1.36 +0.1 1.42 perf-profile.self.cycles-pp.kmem_cache_free
0.51 ? 2% +0.1 0.58 ? 2% perf-profile.self.cycles-pp.__sk_mem_raise_allocated
0.63 +0.1 0.70 ? 2% perf-profile.self.cycles-pp.sctp_eat_data
0.47 ? 4% +0.1 0.55 ? 3% perf-profile.self.cycles-pp.__sk_mem_reduce_allocated
3.77 +0.1 3.86 perf-profile.self.cycles-pp.copyin
6.90 +0.1 7.03 perf-profile.self.cycles-pp.__memcpy
7.30 +0.2 7.45 perf-profile.self.cycles-pp.acpi_safe_halt
7.26 +0.2 7.49 perf-profile.self.cycles-pp.copyout
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Hello,
kernel test robot noticed a 8.4% improvement of will-it-scale.per_process_ops on:
commit: ba6149e96007edcdb01284c1531ebd49b4720f72 ("[PATCH -V3 7/9] mm: tune PCP high automatically")
url: https://github.com/intel-lab-lkp/linux/commits/Huang-Ying/mm-pcp-avoid-to-drain-PCP-when-process-exit/20231017-143633
base: https://git.kernel.org/cgit/linux/kernel/git/gregkh/driver-core.git 36b2d7dd5a8ac95c8c1e69bdc93c4a6e2dc28a23
patch link: https://lore.kernel.org/all/[email protected]/
patch subject: [PATCH -V3 7/9] mm: tune PCP high automatically
testcase: will-it-scale
test machine: 224 threads 4 sockets Intel(R) Xeon(R) Platinum 8380H CPU @ 2.90GHz (Cooper Lake) with 192G memory
parameters:
nr_task: 16
mode: process
test: page_fault2
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20231031/[email protected]
=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase:
gcc-12/performance/x86_64-rhel-8.3/process/16/debian-11.1-x86_64-20220510.cgz/lkp-cpl-4sp2/page_fault2/will-it-scale
commit:
9f9d0b0869 ("mm: add framework for PCP high auto-tuning")
ba6149e960 ("mm: tune PCP high automatically")
9f9d0b08696fb316 ba6149e96007edcdb01284c1531
---------------- ---------------------------
%stddev %change %stddev
\ | \
0.29 +0.0 0.32 mpstat.cpu.all.usr%
1434135 ? 2% +15.8% 1660688 ? 4% numa-meminfo.node0.AnonPages.max
22.97 +2.0% 23.43 turbostat.RAMWatt
213121 ? 5% -19.5% 171478 ? 7% meminfo.DirectMap4k
8031428 +12.0% 8998346 meminfo.Memused
9777522 +14.3% 11178004 meminfo.max_used_kB
4913700 +8.4% 5326025 will-it-scale.16.processes
307105 +8.4% 332876 will-it-scale.per_process_ops
4913700 +8.4% 5326025 will-it-scale.workload
1.488e+09 +8.5% 1.614e+09 proc-vmstat.numa_hit
1.487e+09 +8.4% 1.612e+09 proc-vmstat.numa_local
1.486e+09 +8.3% 1.609e+09 proc-vmstat.pgalloc_normal
1.482e+09 +8.3% 1.604e+09 proc-vmstat.pgfault
1.486e+09 +8.3% 1.609e+09 proc-vmstat.pgfree
2535424 ? 2% +6.2% 2693888 ? 2% proc-vmstat.unevictable_pgs_scanned
0.04 ? 9% +62.2% 0.06 ? 20% perf-sched.wait_and_delay.avg.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.irqentry_exit_to_user_mode.asm_exc_page_fault
85.33 ? 7% +36.1% 116.17 ? 8% perf-sched.wait_and_delay.count.exit_to_user_mode_loop.exit_to_user_mode_prepare.irqentry_exit_to_user_mode.asm_exc_page_fault
475.33 ? 3% +24.8% 593.33 ? 4% perf-sched.wait_and_delay.count.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
0.16 ? 17% +449.1% 0.87 ? 39% perf-sched.wait_and_delay.max.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.irqentry_exit_to_user_mode.asm_exc_page_fault
0.03 ? 10% +94.1% 0.07 ? 26% perf-sched.wait_time.avg.ms.__cond_resched.__alloc_pages.__folio_alloc.vma_alloc_folio.do_cow_fault
0.04 ? 9% +62.2% 0.06 ? 20% perf-sched.wait_time.avg.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.irqentry_exit_to_user_mode.asm_exc_page_fault
0.16 ? 17% +449.1% 0.87 ? 39% perf-sched.wait_time.max.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.irqentry_exit_to_user_mode.asm_exc_page_fault
14.01 +6.0% 14.85 perf-stat.i.MPKI
5.79e+09 +3.6% 6.001e+09 perf-stat.i.branch-instructions
0.20 ? 2% +0.0 0.21 ? 2% perf-stat.i.branch-miss-rate%
12098037 ? 2% +8.5% 13122446 ? 2% perf-stat.i.branch-misses
82.90 +2.1 85.03 perf-stat.i.cache-miss-rate%
4.005e+08 +9.8% 4.399e+08 perf-stat.i.cache-misses
4.83e+08 +7.1% 5.174e+08 perf-stat.i.cache-references
2.29 -3.2% 2.22 perf-stat.i.cpi
164.08 -9.0% 149.33 perf-stat.i.cycles-between-cache-misses
7.091e+09 +4.2% 7.392e+09 perf-stat.i.dTLB-loads
0.97 +0.0 1.01 perf-stat.i.dTLB-store-miss-rate%
40301594 +8.8% 43829422 perf-stat.i.dTLB-store-misses
4.121e+09 +4.4% 4.302e+09 perf-stat.i.dTLB-stores
83.96 +2.6 86.59 perf-stat.i.iTLB-load-miss-rate%
10268085 ? 3% +23.0% 12628681 ? 3% perf-stat.i.iTLB-load-misses
2.861e+10 +3.7% 2.966e+10 perf-stat.i.instructions
2796 ? 3% -15.7% 2356 ? 3% perf-stat.i.instructions-per-iTLB-miss
0.44 +3.3% 0.45 perf-stat.i.ipc
984.67 +9.6% 1078 perf-stat.i.metric.K/sec
78.05 +4.2% 81.29 perf-stat.i.metric.M/sec
4913856 +8.4% 5329060 perf-stat.i.minor-faults
1.356e+08 +10.6% 1.499e+08 perf-stat.i.node-loads
32443508 +7.6% 34908277 perf-stat.i.node-stores
4913858 +8.4% 5329062 perf-stat.i.page-faults
14.00 +6.0% 14.83 perf-stat.overall.MPKI
0.21 ? 2% +0.0 0.22 ? 2% perf-stat.overall.branch-miss-rate%
82.92 +2.1 85.02 perf-stat.overall.cache-miss-rate%
2.29 -3.1% 2.21 perf-stat.overall.cpi
163.33 -8.6% 149.29 perf-stat.overall.cycles-between-cache-misses
0.97 +0.0 1.01 perf-stat.overall.dTLB-store-miss-rate%
84.00 +2.6 86.61 perf-stat.overall.iTLB-load-miss-rate%
2789 ? 3% -15.7% 2350 ? 3% perf-stat.overall.instructions-per-iTLB-miss
0.44 +3.2% 0.45 perf-stat.overall.ipc
1754985 -4.7% 1673375 perf-stat.overall.path-length
5.771e+09 +3.6% 5.981e+09 perf-stat.ps.branch-instructions
12074113 ? 2% +8.4% 13094204 ? 2% perf-stat.ps.branch-misses
3.992e+08 +9.8% 4.384e+08 perf-stat.ps.cache-misses
4.814e+08 +7.1% 5.157e+08 perf-stat.ps.cache-references
7.068e+09 +4.2% 7.367e+09 perf-stat.ps.dTLB-loads
40167519 +8.7% 43680173 perf-stat.ps.dTLB-store-misses
4.107e+09 +4.4% 4.288e+09 perf-stat.ps.dTLB-stores
10234325 ? 3% +23.0% 12587000 ? 3% perf-stat.ps.iTLB-load-misses
2.852e+10 +3.6% 2.956e+10 perf-stat.ps.instructions
4897507 +8.4% 5310921 perf-stat.ps.minor-faults
1.351e+08 +10.5% 1.494e+08 perf-stat.ps.node-loads
32335421 +7.6% 34789913 perf-stat.ps.node-stores
4897509 +8.4% 5310923 perf-stat.ps.page-faults
8.623e+12 +3.4% 8.912e+12 perf-stat.total.instructions
9.86 ? 3% -8.4 1.49 ? 5% perf-profile.calltrace.cycles-pp.rmqueue_bulk.__rmqueue_pcplist.rmqueue.get_page_from_freelist.__alloc_pages
8.11 ? 3% -7.5 0.58 ? 8% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.rmqueue_bulk.__rmqueue_pcplist.rmqueue.get_page_from_freelist
8.10 ? 3% -7.5 0.58 ? 8% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.rmqueue_bulk.__rmqueue_pcplist.rmqueue
7.52 ? 3% -6.4 1.15 ? 5% perf-profile.calltrace.cycles-pp.free_pcppages_bulk.free_unref_page_list.release_pages.tlb_batch_pages_flush.zap_pte_range
7.90 ? 4% -6.4 1.55 ? 4% perf-profile.calltrace.cycles-pp.free_unref_page_list.release_pages.tlb_batch_pages_flush.zap_pte_range.zap_pmd_range
5.78 ? 4% -5.8 0.00 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.free_pcppages_bulk.free_unref_page_list.release_pages.tlb_batch_pages_flush
5.78 ? 4% -5.8 0.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.free_pcppages_bulk.free_unref_page_list.release_pages
10.90 ? 3% -5.3 5.59 ? 2% perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_pages.__folio_alloc.vma_alloc_folio.do_cow_fault
10.57 ? 3% -5.3 5.26 ? 3% perf-profile.calltrace.cycles-pp.rmqueue.get_page_from_freelist.__alloc_pages.__folio_alloc.vma_alloc_folio
10.21 ? 3% -5.3 4.94 ? 3% perf-profile.calltrace.cycles-pp.__rmqueue_pcplist.rmqueue.get_page_from_freelist.__alloc_pages.__folio_alloc
11.18 ? 3% -5.3 5.91 ? 2% perf-profile.calltrace.cycles-pp.__folio_alloc.vma_alloc_folio.do_cow_fault.do_fault.__handle_mm_fault
11.15 ? 3% -5.3 5.88 ? 2% perf-profile.calltrace.cycles-pp.__alloc_pages.__folio_alloc.vma_alloc_folio.do_cow_fault.do_fault
11.56 ? 3% -5.2 6.37 ? 2% perf-profile.calltrace.cycles-pp.vma_alloc_folio.do_cow_fault.do_fault.__handle_mm_fault.handle_mm_fault
9.76 ? 3% -4.3 5.50 ? 6% perf-profile.calltrace.cycles-pp.release_pages.tlb_batch_pages_flush.zap_pte_range.zap_pmd_range.unmap_page_range
10.18 ? 3% -4.2 5.95 ? 5% perf-profile.calltrace.cycles-pp.tlb_batch_pages_flush.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas
15.40 ? 3% -3.7 11.70 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__munmap
15.40 ? 3% -3.7 11.70 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
15.40 ? 3% -3.7 11.70 perf-profile.calltrace.cycles-pp.__munmap
15.40 ? 3% -3.7 11.70 perf-profile.calltrace.cycles-pp.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe
15.40 ? 3% -3.7 11.70 perf-profile.calltrace.cycles-pp.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap.do_syscall_64
15.40 ? 3% -3.7 11.70 perf-profile.calltrace.cycles-pp.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
15.40 ? 3% -3.7 11.70 perf-profile.calltrace.cycles-pp.__vm_munmap.__x64_sys_munmap.do_syscall_64.entry_SYSCALL_64_after_hwframe.__munmap
15.39 ? 3% -3.7 11.70 perf-profile.calltrace.cycles-pp.unmap_region.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap.__x64_sys_munmap
14.08 ? 3% -3.6 10.49 perf-profile.calltrace.cycles-pp.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas.unmap_region
14.10 ? 3% -3.6 10.52 perf-profile.calltrace.cycles-pp.unmap_vmas.unmap_region.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap
14.10 ? 3% -3.6 10.52 perf-profile.calltrace.cycles-pp.unmap_page_range.unmap_vmas.unmap_region.do_vmi_align_munmap.do_vmi_munmap
14.10 ? 3% -3.6 10.52 perf-profile.calltrace.cycles-pp.zap_pmd_range.unmap_page_range.unmap_vmas.unmap_region.do_vmi_align_munmap
1.60 ? 2% -0.7 0.86 ? 6% perf-profile.calltrace.cycles-pp.__list_del_entry_valid_or_report.rmqueue_bulk.__rmqueue_pcplist.rmqueue.get_page_from_freelist
0.96 ? 3% -0.4 0.56 ? 3% perf-profile.calltrace.cycles-pp.free_pcppages_bulk.free_unref_page_list.release_pages.tlb_batch_pages_flush.tlb_finish_mmu
1.00 ? 4% -0.4 0.62 ? 4% perf-profile.calltrace.cycles-pp.free_unref_page_list.release_pages.tlb_batch_pages_flush.tlb_finish_mmu.unmap_region
1.26 ? 4% -0.1 1.11 ? 2% perf-profile.calltrace.cycles-pp.release_pages.tlb_batch_pages_flush.tlb_finish_mmu.unmap_region.do_vmi_align_munmap
1.28 ? 3% -0.1 1.16 ? 3% perf-profile.calltrace.cycles-pp.tlb_batch_pages_flush.tlb_finish_mmu.unmap_region.do_vmi_align_munmap.do_vmi_munmap
1.28 ? 4% -0.1 1.17 ? 2% perf-profile.calltrace.cycles-pp.tlb_finish_mmu.unmap_region.do_vmi_align_munmap.do_vmi_munmap.__vm_munmap
0.60 ? 3% -0.0 0.57 perf-profile.calltrace.cycles-pp.__mem_cgroup_charge.do_cow_fault.do_fault.__handle_mm_fault.handle_mm_fault
0.55 ? 3% +0.0 0.60 perf-profile.calltrace.cycles-pp.__perf_sw_event.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
0.73 ? 3% +0.1 0.79 ? 2% perf-profile.calltrace.cycles-pp.lock_vma_under_rcu.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
0.68 ? 3% +0.1 0.78 ? 3% perf-profile.calltrace.cycles-pp.page_remove_rmap.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas
0.57 ? 7% +0.1 0.71 ? 8% perf-profile.calltrace.cycles-pp.__mod_lruvec_page_state.folio_add_new_anon_rmap.set_pte_range.finish_fault.do_cow_fault
1.41 ? 3% +0.1 1.55 perf-profile.calltrace.cycles-pp.sync_regs.asm_exc_page_fault.testcase
0.77 ? 4% +0.2 0.93 ? 5% perf-profile.calltrace.cycles-pp.folio_add_new_anon_rmap.set_pte_range.finish_fault.do_cow_fault.do_fault
0.94 ? 3% +0.2 1.12 ? 3% perf-profile.calltrace.cycles-pp.lru_add_fn.folio_batch_move_lru.folio_add_lru_vma.set_pte_range.finish_fault
0.36 ? 70% +0.2 0.57 perf-profile.calltrace.cycles-pp.__perf_sw_event.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
1.26 ? 5% +0.2 1.47 ? 3% perf-profile.calltrace.cycles-pp.filemap_get_entry.shmem_get_folio_gfp.shmem_fault.__do_fault.do_cow_fault
1.61 ? 5% +0.3 1.87 ? 3% perf-profile.calltrace.cycles-pp.shmem_get_folio_gfp.shmem_fault.__do_fault.do_cow_fault.do_fault
1.75 ? 5% +0.3 2.05 ? 3% perf-profile.calltrace.cycles-pp.shmem_fault.__do_fault.do_cow_fault.do_fault.__handle_mm_fault
1.86 ? 4% +0.3 2.17 ? 2% perf-profile.calltrace.cycles-pp.__do_fault.do_cow_fault.do_fault.__handle_mm_fault.handle_mm_fault
0.17 ?141% +0.4 0.58 ? 3% perf-profile.calltrace.cycles-pp.xas_load.filemap_get_entry.shmem_get_folio_gfp.shmem_fault.__do_fault
2.60 ? 3% +0.5 3.14 ? 5% perf-profile.calltrace.cycles-pp._compound_head.zap_pte_range.zap_pmd_range.unmap_page_range.unmap_vmas
4.51 ? 3% +0.7 5.16 perf-profile.calltrace.cycles-pp._raw_spin_lock.__pte_offset_map_lock.finish_fault.do_cow_fault.do_fault
4.65 ? 3% +0.7 5.32 perf-profile.calltrace.cycles-pp.__pte_offset_map_lock.finish_fault.do_cow_fault.do_fault.__handle_mm_fault
1.61 ? 3% +1.9 3.52 ? 6% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.folio_lruvec_lock_irqsave.folio_batch_move_lru.folio_add_lru_vma
0.85 ? 2% +1.9 2.77 ? 13% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.folio_lruvec_lock_irqsave.release_pages.tlb_batch_pages_flush.zap_pte_range
0.84 ? 2% +1.9 2.76 ? 13% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.folio_lruvec_lock_irqsave.release_pages.tlb_batch_pages_flush
0.85 ? 2% +1.9 2.78 ? 12% perf-profile.calltrace.cycles-pp.folio_lruvec_lock_irqsave.release_pages.tlb_batch_pages_flush.zap_pte_range.zap_pmd_range
1.71 ? 3% +1.9 3.64 ? 6% perf-profile.calltrace.cycles-pp.folio_lruvec_lock_irqsave.folio_batch_move_lru.folio_add_lru_vma.set_pte_range.finish_fault
1.70 ? 2% +1.9 3.63 ? 6% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.folio_lruvec_lock_irqsave.folio_batch_move_lru.folio_add_lru_vma.set_pte_range
3.31 ? 2% +2.2 5.52 ? 5% perf-profile.calltrace.cycles-pp.folio_batch_move_lru.folio_add_lru_vma.set_pte_range.finish_fault.do_cow_fault
3.46 ? 2% +2.2 5.71 ? 5% perf-profile.calltrace.cycles-pp.folio_add_lru_vma.set_pte_range.finish_fault.do_cow_fault.do_fault
4.47 ? 2% +2.4 6.90 ? 4% perf-profile.calltrace.cycles-pp.set_pte_range.finish_fault.do_cow_fault.do_fault.__handle_mm_fault
9.22 ? 2% +3.1 12.33 ? 2% perf-profile.calltrace.cycles-pp.finish_fault.do_cow_fault.do_fault.__handle_mm_fault.handle_mm_fault
44.13 ? 3% +3.2 47.34 perf-profile.calltrace.cycles-pp.do_cow_fault.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
44.27 ? 3% +3.2 47.49 perf-profile.calltrace.cycles-pp.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault
45.63 ? 2% +3.3 48.95 perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
0.00 +3.4 3.37 ? 2% perf-profile.calltrace.cycles-pp.__list_del_entry_valid_or_report.__rmqueue_pcplist.rmqueue.get_page_from_freelist.__alloc_pages
46.88 ? 3% +3.4 50.29 perf-profile.calltrace.cycles-pp.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
49.40 ? 2% +3.6 53.03 perf-profile.calltrace.cycles-pp.do_user_addr_fault.exc_page_fault.asm_exc_page_fault.testcase
49.59 ? 2% +3.7 53.24 perf-profile.calltrace.cycles-pp.exc_page_fault.asm_exc_page_fault.testcase
59.06 ? 2% +4.5 63.60 perf-profile.calltrace.cycles-pp.asm_exc_page_fault.testcase
56.32 ? 3% +4.6 60.89 perf-profile.calltrace.cycles-pp.testcase
20.16 ? 3% +4.9 25.10 perf-profile.calltrace.cycles-pp.copy_page.do_cow_fault.do_fault.__handle_mm_fault.handle_mm_fault
16.66 ? 3% -8.8 7.83 ? 8% perf-profile.children.cycles-pp._raw_spin_lock_irqsave
16.48 ? 3% -8.8 7.66 ? 8% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
9.90 ? 3% -8.4 1.50 ? 5% perf-profile.children.cycles-pp.rmqueue_bulk
8.92 ? 3% -6.7 2.18 ? 2% perf-profile.children.cycles-pp.free_unref_page_list
8.47 ? 3% -6.7 1.74 ? 4% perf-profile.children.cycles-pp.free_pcppages_bulk
10.96 ? 3% -5.3 5.64 ? 2% perf-profile.children.cycles-pp.get_page_from_freelist
10.62 ? 3% -5.3 5.30 ? 2% perf-profile.children.cycles-pp.rmqueue
10.26 ? 3% -5.3 4.97 ? 3% perf-profile.children.cycles-pp.__rmqueue_pcplist
11.24 ? 3% -5.3 5.96 ? 2% perf-profile.children.cycles-pp.__alloc_pages
11.18 ? 3% -5.3 5.92 ? 2% perf-profile.children.cycles-pp.__folio_alloc
11.57 ? 3% -5.2 6.37 ? 2% perf-profile.children.cycles-pp.vma_alloc_folio
11.19 ? 3% -4.4 6.82 ? 5% perf-profile.children.cycles-pp.release_pages
11.46 ? 3% -4.3 7.12 ? 5% perf-profile.children.cycles-pp.tlb_batch_pages_flush
15.52 ? 3% -3.7 11.81 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
15.52 ? 3% -3.7 11.81 perf-profile.children.cycles-pp.do_syscall_64
15.41 ? 3% -3.7 11.70 perf-profile.children.cycles-pp.__munmap
15.40 ? 3% -3.7 11.70 perf-profile.children.cycles-pp.do_vmi_munmap
15.40 ? 3% -3.7 11.70 perf-profile.children.cycles-pp.do_vmi_align_munmap
15.40 ? 3% -3.7 11.70 perf-profile.children.cycles-pp.__x64_sys_munmap
15.40 ? 3% -3.7 11.70 perf-profile.children.cycles-pp.__vm_munmap
15.39 ? 3% -3.7 11.70 perf-profile.children.cycles-pp.unmap_region
14.10 ? 3% -3.6 10.52 perf-profile.children.cycles-pp.unmap_vmas
14.10 ? 3% -3.6 10.52 perf-profile.children.cycles-pp.unmap_page_range
14.10 ? 3% -3.6 10.52 perf-profile.children.cycles-pp.zap_pmd_range
14.10 ? 3% -3.6 10.52 perf-profile.children.cycles-pp.zap_pte_range
2.60 ? 3% -2.0 0.56 ? 4% perf-profile.children.cycles-pp.__free_one_page
1.28 ? 3% -0.1 1.17 ? 2% perf-profile.children.cycles-pp.tlb_finish_mmu
0.15 ? 19% -0.1 0.08 ? 14% perf-profile.children.cycles-pp.get_mem_cgroup_from_mm
0.61 ? 3% -0.0 0.58 ? 2% perf-profile.children.cycles-pp.__mem_cgroup_charge
0.11 ? 6% -0.0 0.08 ? 7% perf-profile.children.cycles-pp.__mod_zone_page_state
0.25 ? 4% +0.0 0.26 perf-profile.children.cycles-pp.error_entry
0.15 ? 3% +0.0 0.17 ? 4% perf-profile.children.cycles-pp.free_unref_page_commit
0.12 ? 8% +0.0 0.14 ? 3% perf-profile.children.cycles-pp.__mem_cgroup_uncharge_list
0.18 ? 3% +0.0 0.20 ? 4% perf-profile.children.cycles-pp.access_error
0.07 ? 5% +0.0 0.09 ? 7% perf-profile.children.cycles-pp.task_tick_fair
0.04 ? 45% +0.0 0.06 ? 7% perf-profile.children.cycles-pp.page_counter_try_charge
0.30 ? 4% +0.0 0.32 perf-profile.children.cycles-pp.down_read_trylock
0.27 ? 3% +0.0 0.30 ? 2% perf-profile.children.cycles-pp.up_read
0.15 ? 8% +0.0 0.18 ? 3% perf-profile.children.cycles-pp.mem_cgroup_update_lru_size
0.02 ?142% +0.1 0.07 ? 29% perf-profile.children.cycles-pp.ret_from_fork_asm
0.44 ? 2% +0.1 0.49 ? 3% perf-profile.children.cycles-pp.mas_walk
0.46 ? 4% +0.1 0.52 ? 2% perf-profile.children.cycles-pp.__mod_memcg_lruvec_state
0.67 ? 3% +0.1 0.73 ? 4% perf-profile.children.cycles-pp.lock_mm_and_find_vma
0.42 ? 3% +0.1 0.48 ? 2% perf-profile.children.cycles-pp.free_swap_cache
0.43 ? 4% +0.1 0.49 ? 2% perf-profile.children.cycles-pp.free_pages_and_swap_cache
0.30 ? 5% +0.1 0.37 ? 3% perf-profile.children.cycles-pp.xas_descend
0.86 ? 3% +0.1 0.92 perf-profile.children.cycles-pp.___perf_sw_event
0.73 ? 3% +0.1 0.80 perf-profile.children.cycles-pp.lock_vma_under_rcu
0.40 ? 2% +0.1 0.47 perf-profile.children.cycles-pp.__mod_node_page_state
0.01 ?223% +0.1 0.09 ? 12% perf-profile.children.cycles-pp.shmem_get_policy
0.53 ? 2% +0.1 0.62 ? 2% perf-profile.children.cycles-pp.__mod_lruvec_state
1.09 ? 3% +0.1 1.18 perf-profile.children.cycles-pp.__perf_sw_event
0.50 ? 5% +0.1 0.60 ? 3% perf-profile.children.cycles-pp.xas_load
0.68 ? 3% +0.1 0.78 ? 3% perf-profile.children.cycles-pp.page_remove_rmap
1.45 ? 3% +0.1 1.60 perf-profile.children.cycles-pp.sync_regs
0.77 ? 4% +0.2 0.93 ? 5% perf-profile.children.cycles-pp.folio_add_new_anon_rmap
0.84 ? 5% +0.2 1.02 ? 7% perf-profile.children.cycles-pp.__mod_lruvec_page_state
0.96 ? 4% +0.2 1.15 ? 3% perf-profile.children.cycles-pp.lru_add_fn
1.27 ? 5% +0.2 1.48 ? 3% perf-profile.children.cycles-pp.filemap_get_entry
1.62 ? 4% +0.3 1.88 ? 3% perf-profile.children.cycles-pp.shmem_get_folio_gfp
1.75 ? 5% +0.3 2.06 ? 3% perf-profile.children.cycles-pp.shmem_fault
1.87 ? 4% +0.3 2.18 ? 2% perf-profile.children.cycles-pp.__do_fault
2.19 ? 2% +0.3 2.51 perf-profile.children.cycles-pp.native_irq_return_iret
2.64 ? 4% +0.5 3.18 ? 6% perf-profile.children.cycles-pp._compound_head
4.62 ? 3% +0.6 5.26 perf-profile.children.cycles-pp._raw_spin_lock
4.67 ? 3% +0.7 5.34 perf-profile.children.cycles-pp.__pte_offset_map_lock
3.32 ? 2% +2.2 5.54 ? 5% perf-profile.children.cycles-pp.folio_batch_move_lru
3.47 ? 2% +2.2 5.72 ? 5% perf-profile.children.cycles-pp.folio_add_lru_vma
4.49 ? 2% +2.4 6.92 ? 4% perf-profile.children.cycles-pp.set_pte_range
9.25 ? 2% +3.1 12.36 ? 2% perf-profile.children.cycles-pp.finish_fault
2.25 ? 2% +3.1 5.36 ? 2% perf-profile.children.cycles-pp.__list_del_entry_valid_or_report
44.16 ? 3% +3.2 47.37 perf-profile.children.cycles-pp.do_cow_fault
44.28 ? 3% +3.2 47.50 perf-profile.children.cycles-pp.do_fault
45.66 ? 2% +3.3 48.98 perf-profile.children.cycles-pp.__handle_mm_fault
46.91 ? 2% +3.4 50.33 perf-profile.children.cycles-pp.handle_mm_fault
49.44 ? 2% +3.6 53.08 perf-profile.children.cycles-pp.do_user_addr_fault
49.62 ? 2% +3.6 53.27 perf-profile.children.cycles-pp.exc_page_fault
2.70 ? 3% +4.1 6.75 ? 8% perf-profile.children.cycles-pp.folio_lruvec_lock_irqsave
55.26 ? 2% +4.2 59.44 perf-profile.children.cycles-pp.asm_exc_page_fault
58.13 ? 3% +4.6 62.72 perf-profile.children.cycles-pp.testcase
20.19 ? 3% +4.9 25.14 perf-profile.children.cycles-pp.copy_page
16.48 ? 3% -8.8 7.66 ? 8% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
2.53 ? 3% -2.0 0.54 ? 3% perf-profile.self.cycles-pp.__free_one_page
0.12 ? 4% -0.1 0.05 ? 46% perf-profile.self.cycles-pp.rmqueue_bulk
0.14 ? 19% -0.1 0.08 ? 14% perf-profile.self.cycles-pp.get_mem_cgroup_from_mm
0.10 ? 3% -0.0 0.08 ? 10% perf-profile.self.cycles-pp.__mod_zone_page_state
0.13 ? 5% +0.0 0.14 ? 2% perf-profile.self.cycles-pp.free_unref_page_commit
0.13 ? 3% +0.0 0.14 ? 3% perf-profile.self.cycles-pp.exc_page_fault
0.15 ? 5% +0.0 0.17 ? 4% perf-profile.self.cycles-pp.__pte_offset_map
0.04 ? 44% +0.0 0.06 ? 6% perf-profile.self.cycles-pp.page_counter_try_charge
0.18 ? 3% +0.0 0.20 ? 4% perf-profile.self.cycles-pp.access_error
0.30 ? 3% +0.0 0.32 ? 2% perf-profile.self.cycles-pp.down_read_trylock
0.16 ? 6% +0.0 0.18 perf-profile.self.cycles-pp.set_pte_range
0.26 ? 2% +0.0 0.29 ? 3% perf-profile.self.cycles-pp.up_read
0.15 ? 8% +0.0 0.18 ? 4% perf-profile.self.cycles-pp.folio_add_lru_vma
0.15 ? 8% +0.0 0.18 ? 3% perf-profile.self.cycles-pp.mem_cgroup_update_lru_size
0.22 ? 6% +0.0 0.26 ? 5% perf-profile.self.cycles-pp.__alloc_pages
0.32 ? 6% +0.0 0.36 ? 3% perf-profile.self.cycles-pp.shmem_get_folio_gfp
0.28 ? 5% +0.0 0.32 ? 4% perf-profile.self.cycles-pp.do_cow_fault
0.14 ? 7% +0.0 0.18 ? 6% perf-profile.self.cycles-pp.shmem_fault
0.34 ? 5% +0.0 0.38 ? 4% perf-profile.self.cycles-pp.__mod_memcg_lruvec_state
0.00 +0.1 0.05 perf-profile.self.cycles-pp.__cond_resched
0.44 ? 3% +0.1 0.49 ? 4% perf-profile.self.cycles-pp.page_remove_rmap
0.41 ? 3% +0.1 0.47 ? 3% perf-profile.self.cycles-pp.free_swap_cache
0.75 ? 3% +0.1 0.81 ? 2% perf-profile.self.cycles-pp.___perf_sw_event
0.91 ? 2% +0.1 0.98 ? 2% perf-profile.self.cycles-pp.__handle_mm_fault
0.29 ? 6% +0.1 0.36 ? 3% perf-profile.self.cycles-pp.xas_descend
0.38 ? 2% +0.1 0.45 ? 2% perf-profile.self.cycles-pp.__mod_node_page_state
0.01 ?223% +0.1 0.09 ? 8% perf-profile.self.cycles-pp.shmem_get_policy
0.58 ? 3% +0.1 0.66 ? 2% perf-profile.self.cycles-pp.release_pages
0.44 ? 4% +0.1 0.54 ? 3% perf-profile.self.cycles-pp.lru_add_fn
1.44 ? 3% +0.1 1.59 perf-profile.self.cycles-pp.sync_regs
2.18 ? 2% +0.3 2.50 perf-profile.self.cycles-pp.native_irq_return_iret
4.36 ? 3% +0.4 4.76 perf-profile.self.cycles-pp.testcase
2.61 ? 4% +0.5 3.14 ? 5% perf-profile.self.cycles-pp._compound_head
4.60 ? 3% +0.6 5.23 perf-profile.self.cycles-pp._raw_spin_lock
2.23 ? 2% +3.1 5.34 ? 2% perf-profile.self.cycles-pp.__list_del_entry_valid_or_report
20.10 ? 3% +4.9 25.02 perf-profile.self.cycles-pp.copy_page
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
hi, Huang Ying,
sorry for late of this report.
we reported
"a 14.6% improvement of netperf.Throughput_Mbps"
in
https://lore.kernel.org/all/[email protected]/
later, our auto-bisect tool captured a regression on a netperf test with
different configurations, however, unfortunately, regarded it as 'reported'
so we missed this report at the first time.
now send again FYI.
Hello,
kernel test robot noticed a -60.4% regression of netperf.Throughput_Mbps on:
commit: f5ddc662f07d7d99e9cfc5e07778e26c7394caf8 ("[PATCH -V3 3/9] mm, pcp: reduce lock contention for draining high-order pages")
url: https://github.com/intel-lab-lkp/linux/commits/Huang-Ying/mm-pcp-avoid-to-drain-PCP-when-process-exit/20231017-143633
base: https://git.kernel.org/cgit/linux/kernel/git/gregkh/driver-core.git 36b2d7dd5a8ac95c8c1e69bdc93c4a6e2dc28a23
patch link: https://lore.kernel.org/all/[email protected]/
patch subject: [PATCH -V3 3/9] mm, pcp: reduce lock contention for draining high-order pages
testcase: netperf
test machine: 128 threads 2 sockets Intel(R) Xeon(R) Gold 6338 CPU @ 2.00GHz (Ice Lake) with 256G memory
parameters:
ip: ipv4
runtime: 300s
nr_threads: 50%
cluster: cs-localhost
test: UDP_STREAM
cpufreq_governor: performance
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-lkp/[email protected]
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20231106/[email protected]
=========================================================================================
cluster/compiler/cpufreq_governor/ip/kconfig/nr_threads/rootfs/runtime/tbox_group/test/testcase:
cs-localhost/gcc-12/performance/ipv4/x86_64-rhel-8.3/50%/debian-11.1-x86_64-20220510.cgz/300s/lkp-icl-2sp2/UDP_STREAM/netperf
commit:
c828e65251 ("cacheinfo: calculate size of per-CPU data cache slice")
f5ddc662f0 ("mm, pcp: reduce lock contention for draining high-order pages")
c828e65251502516 f5ddc662f07d7d99e9cfc5e0777
---------------- ---------------------------
%stddev %change %stddev
\ | \
7321 ? 4% +28.2% 9382 uptime.idle
50.65 ? 4% -4.0% 48.64 boot-time.boot
6042 ? 4% -4.2% 5785 boot-time.idle
1.089e+09 ? 2% +232.1% 3.618e+09 cpuidle..time
1087075 ? 2% +24095.8% 2.63e+08 cpuidle..usage
3357014 +99.9% 6710312 vmstat.memory.cache
48731 ? 19% +4666.5% 2322787 vmstat.system.cs
144637 +711.2% 1173334 vmstat.system.in
2.59 ? 2% +6.2 8.79 mpstat.cpu.all.idle%
1.01 +0.7 1.66 mpstat.cpu.all.irq%
6.00 -3.2 2.79 mpstat.cpu.all.soft%
1.13 ? 2% -0.1 1.02 mpstat.cpu.all.usr%
1.407e+09 ? 3% -28.2% 1.011e+09 numa-numastat.node0.local_node
1.407e+09 ? 3% -28.2% 1.01e+09 numa-numastat.node0.numa_hit
1.469e+09 ? 8% -32.0% 9.979e+08 numa-numastat.node1.local_node
1.469e+09 ? 8% -32.1% 9.974e+08 numa-numastat.node1.numa_hit
103.00 ? 19% -44.0% 57.67 ? 20% perf-c2c.DRAM.local
8970 ? 12% -89.4% 951.00 ? 4% perf-c2c.DRAM.remote
8192 ? 5% +68.5% 13807 perf-c2c.HITM.local
6675 ? 11% -92.6% 491.00 ? 2% perf-c2c.HITM.remote
1051014 ? 2% +24922.0% 2.63e+08 turbostat.C1
2.75 ? 2% +6.5 9.29 turbostat.C1%
2.72 ? 2% +178.3% 7.57 turbostat.CPU%c1
0.09 -22.2% 0.07 turbostat.IPC
44589125 +701.5% 3.574e+08 turbostat.IRQ
313.00 ? 57% +1967.0% 6469 ? 8% turbostat.POLL
70.33 +3.3% 72.67 turbostat.PkgTmp
44.23 ? 4% -31.8% 30.15 ? 2% turbostat.RAMWatt
536096 +583.7% 3665194 meminfo.Active
535414 +584.4% 3664543 meminfo.Active(anon)
3238301 +103.2% 6579677 meminfo.Cached
1204424 +278.9% 4563575 meminfo.Committed_AS
469093 +47.9% 693889 ? 3% meminfo.Inactive
467250 +48.4% 693496 ? 3% meminfo.Inactive(anon)
53615 +562.5% 355225 ? 4% meminfo.Mapped
5223078 +64.1% 8571212 meminfo.Memused
557305 +599.6% 3899111 meminfo.Shmem
5660207 +58.9% 8993642 meminfo.max_used_kB
78504 ? 3% -30.1% 54869 netperf.ThroughputBoth_Mbps
5024292 ? 3% -30.1% 3511666 netperf.ThroughputBoth_total_Mbps
7673 ? 5% +249.7% 26832 netperf.ThroughputRecv_Mbps
491074 ? 5% +249.7% 1717287 netperf.ThroughputRecv_total_Mbps
70831 ? 2% -60.4% 28037 netperf.Throughput_Mbps
4533217 ? 2% -60.4% 1794379 netperf.Throughput_total_Mbps
5439 +9.4% 5949 netperf.time.percent_of_cpu_this_job_got
16206 +9.4% 17728 netperf.time.system_time
388.14 -51.9% 186.53 netperf.time.user_time
2.876e+09 ? 3% -30.1% 2.01e+09 netperf.workload
177360 ? 30% -36.0% 113450 ? 20% numa-meminfo.node0.AnonPages
255926 ? 12% -40.6% 152052 ? 12% numa-meminfo.node0.AnonPages.max
22582 ? 61% +484.2% 131916 ? 90% numa-meminfo.node0.Mapped
138287 ? 17% +22.6% 169534 ? 12% numa-meminfo.node1.AnonHugePages
267468 ? 20% +29.1% 345385 ? 6% numa-meminfo.node1.AnonPages
346204 ? 18% +34.5% 465696 ? 2% numa-meminfo.node1.AnonPages.max
279416 ? 19% +77.0% 494652 ? 18% numa-meminfo.node1.Inactive
278445 ? 19% +77.6% 494393 ? 18% numa-meminfo.node1.Inactive(anon)
31726 ? 45% +607.7% 224533 ? 45% numa-meminfo.node1.Mapped
4802 ? 6% +19.4% 5733 ? 3% numa-meminfo.node1.PageTables
297323 ? 12% +792.6% 2653850 ? 63% numa-meminfo.node1.Shmem
44325 ? 30% -36.0% 28379 ? 20% numa-vmstat.node0.nr_anon_pages
5590 ? 61% +491.0% 33042 ? 90% numa-vmstat.node0.nr_mapped
1.407e+09 ? 3% -28.2% 1.01e+09 numa-vmstat.node0.numa_hit
1.407e+09 ? 3% -28.2% 1.011e+09 numa-vmstat.node0.numa_local
66858 ? 20% +29.2% 86385 ? 6% numa-vmstat.node1.nr_anon_pages
69601 ? 20% +77.8% 123729 ? 18% numa-vmstat.node1.nr_inactive_anon
7953 ? 45% +608.3% 56335 ? 45% numa-vmstat.node1.nr_mapped
1201 ? 6% +19.4% 1434 ? 3% numa-vmstat.node1.nr_page_table_pages
74288 ? 11% +792.6% 663111 ? 63% numa-vmstat.node1.nr_shmem
69601 ? 20% +77.8% 123728 ? 18% numa-vmstat.node1.nr_zone_inactive_anon
1.469e+09 ? 8% -32.1% 9.974e+08 numa-vmstat.node1.numa_hit
1.469e+09 ? 8% -32.0% 9.979e+08 numa-vmstat.node1.numa_local
133919 +584.2% 916254 proc-vmstat.nr_active_anon
111196 +3.3% 114828 proc-vmstat.nr_anon_pages
5602484 -1.5% 5518799 proc-vmstat.nr_dirty_background_threshold
11218668 -1.5% 11051092 proc-vmstat.nr_dirty_threshold
809646 +103.2% 1645012 proc-vmstat.nr_file_pages
56374629 -1.5% 55536913 proc-vmstat.nr_free_pages
116775 +48.4% 173349 ? 3% proc-vmstat.nr_inactive_anon
13386 ? 2% +563.3% 88793 ? 4% proc-vmstat.nr_mapped
2286 +6.5% 2434 proc-vmstat.nr_page_table_pages
139393 +599.4% 974869 proc-vmstat.nr_shmem
29092 +6.6% 31019 proc-vmstat.nr_slab_reclaimable
133919 +584.2% 916254 proc-vmstat.nr_zone_active_anon
116775 +48.4% 173349 ? 3% proc-vmstat.nr_zone_inactive_anon
32135 ? 11% +257.2% 114797 ? 21% proc-vmstat.numa_hint_faults
20858 ? 16% +318.3% 87244 ? 6% proc-vmstat.numa_hint_faults_local
2.876e+09 ? 3% -30.2% 2.008e+09 proc-vmstat.numa_hit
2.876e+09 ? 3% -30.2% 2.008e+09 proc-vmstat.numa_local
25453 ? 7% -75.2% 6324 ? 30% proc-vmstat.numa_pages_migrated
178224 ? 2% +76.6% 314680 ? 7% proc-vmstat.numa_pte_updates
160889 ? 3% +267.6% 591393 ? 6% proc-vmstat.pgactivate
2.295e+10 ? 3% -30.2% 1.601e+10 proc-vmstat.pgalloc_normal
1026605 +21.9% 1251671 proc-vmstat.pgfault
2.295e+10 ? 3% -30.2% 1.601e+10 proc-vmstat.pgfree
25453 ? 7% -75.2% 6324 ? 30% proc-vmstat.pgmigrate_success
39208 ? 2% -6.1% 36815 proc-vmstat.pgreuse
3164416 -20.3% 2521344 ? 2% proc-vmstat.unevictable_pgs_scanned
19248627 -22.1% 14989905 sched_debug.cfs_rq:/.avg_vruntime.avg
20722680 -24.9% 15569530 sched_debug.cfs_rq:/.avg_vruntime.max
17634233 -22.5% 13663168 sched_debug.cfs_rq:/.avg_vruntime.min
949063 ? 2% -70.5% 280388 sched_debug.cfs_rq:/.avg_vruntime.stddev
0.78 ? 10% -100.0% 0.00 sched_debug.cfs_rq:/.h_nr_running.min
0.16 ? 8% +113.3% 0.33 ? 2% sched_debug.cfs_rq:/.h_nr_running.stddev
0.56 ?141% +2.2e+07% 122016 ? 52% sched_debug.cfs_rq:/.left_vruntime.avg
45.01 ?141% +2.2e+07% 10035976 ? 28% sched_debug.cfs_rq:/.left_vruntime.max
4.58 ?141% +2.3e+07% 1072762 ? 36% sched_debug.cfs_rq:/.left_vruntime.stddev
5814 ? 10% -100.0% 0.00 sched_debug.cfs_rq:/.load.min
5.39 ? 9% -73.2% 1.44 ? 10% sched_debug.cfs_rq:/.load_avg.min
19248627 -22.1% 14989905 sched_debug.cfs_rq:/.min_vruntime.avg
20722680 -24.9% 15569530 sched_debug.cfs_rq:/.min_vruntime.max
17634233 -22.5% 13663168 sched_debug.cfs_rq:/.min_vruntime.min
949063 ? 2% -70.5% 280388 sched_debug.cfs_rq:/.min_vruntime.stddev
0.78 ? 10% -100.0% 0.00 sched_debug.cfs_rq:/.nr_running.min
0.06 ? 8% +369.2% 0.30 ? 3% sched_debug.cfs_rq:/.nr_running.stddev
4.84 ? 26% +1611.3% 82.79 ? 67% sched_debug.cfs_rq:/.removed.load_avg.avg
27.92 ? 12% +3040.3% 876.79 ? 68% sched_debug.cfs_rq:/.removed.load_avg.stddev
0.56 ?141% +2.2e+07% 122016 ? 52% sched_debug.cfs_rq:/.right_vruntime.avg
45.06 ?141% +2.2e+07% 10035976 ? 28% sched_debug.cfs_rq:/.right_vruntime.max
4.59 ?141% +2.3e+07% 1072762 ? 36% sched_debug.cfs_rq:/.right_vruntime.stddev
900.25 -10.4% 806.45 sched_debug.cfs_rq:/.runnable_avg.avg
533.28 ? 4% -87.0% 69.56 ? 39% sched_debug.cfs_rq:/.runnable_avg.min
122.77 ? 2% +92.9% 236.86 sched_debug.cfs_rq:/.runnable_avg.stddev
896.13 -10.8% 799.44 sched_debug.cfs_rq:/.util_avg.avg
379.06 ? 4% -83.4% 62.94 ? 37% sched_debug.cfs_rq:/.util_avg.min
116.35 ? 8% +99.4% 232.04 sched_debug.cfs_rq:/.util_avg.stddev
550.87 -14.2% 472.66 ? 2% sched_debug.cfs_rq:/.util_est_enqueued.avg
1124 ? 8% +18.2% 1329 ? 3% sched_debug.cfs_rq:/.util_est_enqueued.max
134.17 ? 30% -100.0% 0.00 sched_debug.cfs_rq:/.util_est_enqueued.min
558243 ? 6% -66.9% 184666 sched_debug.cpu.avg_idle.avg
12860 ? 11% -56.1% 5644 sched_debug.cpu.avg_idle.min
365635 -53.5% 169863 ? 5% sched_debug.cpu.avg_idle.stddev
9.56 ? 3% -28.4% 6.84 ? 8% sched_debug.cpu.clock.stddev
6999 ? 2% -85.6% 1007 ? 3% sched_debug.cpu.clock_task.stddev
3985 ? 10% -100.0% 0.00 sched_debug.cpu.curr->pid.min
491.71 ? 10% +209.3% 1520 ? 4% sched_debug.cpu.curr->pid.stddev
270.19 ?141% +1096.6% 3233 ? 51% sched_debug.cpu.max_idle_balance_cost.stddev
0.78 ? 10% -100.0% 0.00 sched_debug.cpu.nr_running.min
0.15 ? 6% +121.7% 0.34 ? 2% sched_debug.cpu.nr_running.stddev
62041 ? 15% +4280.9% 2717948 sched_debug.cpu.nr_switches.avg
1074922 ? 14% +292.6% 4220307 ? 2% sched_debug.cpu.nr_switches.max
1186 ? 2% +1.2e+05% 1379073 ? 4% sched_debug.cpu.nr_switches.min
132392 ? 21% +294.6% 522476 ? 5% sched_debug.cpu.nr_switches.stddev
6.44 ? 4% +21.4% 7.82 ? 12% sched_debug.cpu.nr_uninterruptible.stddev
6.73 ? 13% -84.8% 1.02 ? 5% perf-stat.i.MPKI
1.652e+10 ? 2% -22.2% 1.285e+10 perf-stat.i.branch-instructions
0.72 +0.0 0.75 perf-stat.i.branch-miss-rate%
1.19e+08 ? 3% -19.8% 95493630 perf-stat.i.branch-misses
27.46 ? 12% -26.2 1.30 ? 4% perf-stat.i.cache-miss-rate%
5.943e+08 ? 10% -88.6% 67756219 ? 5% perf-stat.i.cache-misses
2.201e+09 +143.7% 5.364e+09 perf-stat.i.cache-references
48911 ? 19% +4695.4% 2345525 perf-stat.i.context-switches
3.66 ? 2% +28.5% 4.71 perf-stat.i.cpi
3.228e+11 -4.1% 3.097e+11 perf-stat.i.cpu-cycles
190.51 +1363.7% 2788 ? 10% perf-stat.i.cpu-migrations
803.99 ? 6% +510.2% 4905 ? 5% perf-stat.i.cycles-between-cache-misses
0.00 ? 16% +0.0 0.01 ? 14% perf-stat.i.dTLB-load-miss-rate%
755654 ? 18% +232.4% 2512024 ? 14% perf-stat.i.dTLB-load-misses
2.385e+10 ? 2% -26.9% 1.742e+10 perf-stat.i.dTLB-loads
0.00 ? 31% +0.0 0.01 ? 35% perf-stat.i.dTLB-store-miss-rate%
305657 ? 36% +200.0% 916822 ? 35% perf-stat.i.dTLB-store-misses
1.288e+10 ? 2% -28.8% 9.179e+09 perf-stat.i.dTLB-stores
8.789e+10 ? 2% -25.2% 6.578e+10 perf-stat.i.instructions
0.28 ? 2% -21.6% 0.22 perf-stat.i.ipc
2.52 -4.1% 2.42 perf-stat.i.metric.GHz
873.89 ? 12% -67.0% 288.04 ? 8% perf-stat.i.metric.K/sec
435.61 ? 2% -19.6% 350.06 perf-stat.i.metric.M/sec
2799 +29.9% 3637 ? 2% perf-stat.i.minor-faults
99.74 -2.6 97.11 perf-stat.i.node-load-miss-rate%
1.294e+08 ? 12% -92.4% 9879207 ? 7% perf-stat.i.node-load-misses
76.55 +16.4 92.92 perf-stat.i.node-store-miss-rate%
2.257e+08 ? 10% -90.4% 21721672 ? 8% perf-stat.i.node-store-misses
69217511 ? 13% -97.7% 1625810 ? 7% perf-stat.i.node-stores
2799 +29.9% 3637 ? 2% perf-stat.i.page-faults
6.79 ? 13% -84.9% 1.03 ? 5% perf-stat.overall.MPKI
0.72 +0.0 0.74 perf-stat.overall.branch-miss-rate%
27.06 ? 12% -25.8 1.26 ? 4% perf-stat.overall.cache-miss-rate%
3.68 ? 2% +28.1% 4.71 perf-stat.overall.cpi
549.38 ? 10% +736.0% 4592 ? 5% perf-stat.overall.cycles-between-cache-misses
0.00 ? 18% +0.0 0.01 ? 14% perf-stat.overall.dTLB-load-miss-rate%
0.00 ? 36% +0.0 0.01 ? 35% perf-stat.overall.dTLB-store-miss-rate%
0.27 ? 2% -22.0% 0.21 perf-stat.overall.ipc
99.80 -2.4 97.37 perf-stat.overall.node-load-miss-rate%
76.60 +16.4 93.03 perf-stat.overall.node-store-miss-rate%
9319 +5.8% 9855 perf-stat.overall.path-length
1.646e+10 ? 2% -22.2% 1.281e+10 perf-stat.ps.branch-instructions
1.186e+08 ? 3% -19.8% 95167897 perf-stat.ps.branch-misses
5.924e+08 ? 10% -88.6% 67384354 ? 5% perf-stat.ps.cache-misses
2.193e+09 +143.4% 5.339e+09 perf-stat.ps.cache-references
49100 ? 19% +4668.0% 2341074 perf-stat.ps.context-switches
3.218e+11 -4.1% 3.087e+11 perf-stat.ps.cpu-cycles
189.73 +1368.4% 2786 ? 10% perf-stat.ps.cpu-migrations
753056 ? 18% +229.9% 2484575 ? 14% perf-stat.ps.dTLB-load-misses
2.377e+10 ? 2% -26.9% 1.737e+10 perf-stat.ps.dTLB-loads
304509 ? 36% +199.1% 910856 ? 35% perf-stat.ps.dTLB-store-misses
1.284e+10 ? 2% -28.7% 9.152e+09 perf-stat.ps.dTLB-stores
8.76e+10 ? 2% -25.2% 6.557e+10 perf-stat.ps.instructions
2791 +28.2% 3580 ? 2% perf-stat.ps.minor-faults
1.29e+08 ? 12% -92.4% 9815672 ? 7% perf-stat.ps.node-load-misses
2.25e+08 ? 10% -90.4% 21575943 ? 8% perf-stat.ps.node-store-misses
69002373 ? 13% -97.7% 1615410 ? 7% perf-stat.ps.node-stores
2791 +28.2% 3580 ? 2% perf-stat.ps.page-faults
2.68e+13 ? 2% -26.1% 1.981e+13 perf-stat.total.instructions
0.00 ? 35% +2600.0% 0.04 ? 23% perf-sched.sch_delay.avg.ms.__cond_resched.__skb_datagram_iter.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg
1.18 ? 9% -98.1% 0.02 ? 32% perf-sched.sch_delay.avg.ms.__cond_resched.stop_one_cpu.sched_exec.bprm_execve.part
0.58 ? 3% -62.1% 0.22 ? 97% perf-sched.sch_delay.avg.ms.__x64_sys_pause.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
0.51 ? 22% -82.7% 0.09 ? 11% perf-sched.sch_delay.avg.ms.do_task_dead.do_exit.do_group_exit.__x64_sys_exit_group.do_syscall_64
0.25 ? 23% -59.6% 0.10 ? 10% perf-sched.sch_delay.avg.ms.do_wait.kernel_wait4.__do_sys_wait4.do_syscall_64
0.03 ? 42% -64.0% 0.01 ? 15% perf-sched.sch_delay.avg.ms.pipe_read.vfs_read.ksys_read.do_syscall_64
0.04 ? 7% +434.6% 0.23 ? 36% perf-sched.sch_delay.avg.ms.schedule_hrtimeout_range_clock.do_poll.constprop.0.do_sys_poll
1.00 ? 20% -84.1% 0.16 ? 78% perf-sched.sch_delay.avg.ms.schedule_hrtimeout_range_clock.do_select.core_sys_select.kern_select
0.01 ? 7% -70.0% 0.00 perf-sched.sch_delay.avg.ms.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
0.02 ? 2% +533.9% 0.12 ? 43% perf-sched.sch_delay.avg.ms.schedule_timeout.kcompactd.kthread.ret_from_fork
0.03 ? 7% +105.9% 0.06 ? 33% perf-sched.sch_delay.avg.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
0.01 ? 15% +67.5% 0.02 ? 8% perf-sched.sch_delay.avg.ms.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
0.09 ? 50% -85.7% 0.01 ? 33% perf-sched.sch_delay.avg.ms.wait_for_partner.fifo_open.do_dentry_open.do_open
0.04 ? 7% +343.4% 0.16 ? 6% perf-sched.sch_delay.avg.ms.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
0.06 ? 41% +3260.7% 1.88 ? 30% perf-sched.sch_delay.max.ms.__cond_resched.__skb_datagram_iter.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg
3.78 -96.2% 0.14 ? 3% perf-sched.sch_delay.max.ms.__cond_resched.stop_one_cpu.sched_exec.bprm_execve.part
2.86 ? 4% -72.6% 0.78 ?113% perf-sched.sch_delay.max.ms.__x64_sys_pause.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
4.09 ? 7% -34.1% 2.69 ? 7% perf-sched.sch_delay.max.ms.do_task_dead.do_exit.do_group_exit.__x64_sys_exit_group.do_syscall_64
3.09 ? 37% -64.1% 1.11 ? 5% perf-sched.sch_delay.max.ms.do_wait.kernel_wait4.__do_sys_wait4.do_syscall_64
0.00 ?141% +6200.0% 0.13 ? 82% perf-sched.sch_delay.max.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt
3.94 -40.5% 2.35 ? 48% perf-sched.sch_delay.max.ms.pipe_read.vfs_read.ksys_read.do_syscall_64
1.63 ? 21% -77.0% 0.38 ? 90% perf-sched.sch_delay.max.ms.schedule_hrtimeout_range_clock.do_select.core_sys_select.kern_select
7.29 ? 39% +417.5% 37.72 ? 16% perf-sched.sch_delay.max.ms.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
3.35 ? 14% -51.7% 1.62 ? 3% perf-sched.sch_delay.max.ms.schedule_timeout.__wait_for_common.wait_for_completion_state.kernel_clone
0.05 ? 13% +2245.1% 1.13 ? 40% perf-sched.sch_delay.max.ms.schedule_timeout.kcompactd.kthread.ret_from_fork
3.01 ? 26% +729.6% 25.01 ? 91% perf-sched.sch_delay.max.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
1.93 ? 59% -85.5% 0.28 ? 62% perf-sched.sch_delay.max.ms.wait_for_partner.fifo_open.do_dentry_open.do_open
0.01 -50.0% 0.00 perf-sched.total_sch_delay.average.ms
7.29 ? 39% +468.8% 41.46 ? 26% perf-sched.total_sch_delay.max.ms
6.04 ? 4% -94.1% 0.35 perf-sched.total_wait_and_delay.average.ms
205790 ? 3% +1811.0% 3932742 perf-sched.total_wait_and_delay.count.ms
6.03 ? 4% -94.2% 0.35 perf-sched.total_wait_time.average.ms
75.51 ? 41% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write
23.01 ? 17% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.__cond_resched.mutex_lock.perf_poll.do_poll.constprop
23.82 ? 7% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
95.27 ? 41% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.__cond_resched.shmem_inode_acct_block.shmem_alloc_and_acct_folio.shmem_get_folio_gfp.shmem_write_begin
55.86 ?141% +1014.6% 622.64 ? 5% perf-sched.wait_and_delay.avg.ms.do_nanosleep.hrtimer_nanosleep.common_nsleep.__x64_sys_clock_nanosleep
0.07 ? 23% -82.5% 0.01 perf-sched.wait_and_delay.avg.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64
137.41 ? 3% +345.1% 611.63 ? 2% perf-sched.wait_and_delay.avg.ms.schedule_hrtimeout_range_clock.do_poll.constprop.0.do_sys_poll
0.04 ? 5% -49.6% 0.02 perf-sched.wait_and_delay.avg.ms.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
536.33 ? 5% -46.5% 287.00 perf-sched.wait_and_delay.avg.ms.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
21.67 ? 32% -100.0% 0.00 perf-sched.wait_and_delay.count.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write
5.67 ? 8% -100.0% 0.00 perf-sched.wait_and_delay.count.__cond_resched.mutex_lock.perf_poll.do_poll.constprop
1.67 ? 56% -100.0% 0.00 perf-sched.wait_and_delay.count.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
5.67 ? 29% -100.0% 0.00 perf-sched.wait_and_delay.count.__cond_resched.shmem_inode_acct_block.shmem_alloc_and_acct_folio.shmem_get_folio_gfp.shmem_write_begin
5.33 ? 23% +93.8% 10.33 ? 25% perf-sched.wait_and_delay.count.__cond_resched.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
101725 ? 3% +15.3% 117243 ? 10% perf-sched.wait_and_delay.count.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64
100.00 ? 7% -80.3% 19.67 ? 2% perf-sched.wait_and_delay.count.schedule_hrtimeout_range_clock.do_poll.constprop.0.do_sys_poll
97762 ? 4% +3794.8% 3807606 perf-sched.wait_and_delay.count.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
1091 ? 9% +111.9% 2311 ? 3% perf-sched.wait_and_delay.count.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
604.50 ? 43% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write
37.41 ? 9% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.__cond_resched.mutex_lock.perf_poll.do_poll.constprop
27.08 ? 13% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
275.41 ? 32% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.__cond_resched.shmem_inode_acct_block.shmem_alloc_and_acct_folio.shmem_get_folio_gfp.shmem_write_begin
1313 ? 69% +112.1% 2786 ? 15% perf-sched.wait_and_delay.max.ms.__cond_resched.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
333.38 ?141% +200.4% 1001 perf-sched.wait_and_delay.max.ms.do_nanosleep.hrtimer_nanosleep.common_nsleep.__x64_sys_clock_nanosleep
1000 -96.8% 31.85 ? 48% perf-sched.wait_and_delay.max.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64
17.99 ? 33% +387.5% 87.71 ? 8% perf-sched.wait_and_delay.max.ms.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
0.33 ? 19% -74.1% 0.09 ? 10% perf-sched.wait_time.avg.ms.__cond_resched.__skb_datagram_iter.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg
0.02 ? 53% +331.4% 0.10 ? 50% perf-sched.wait_time.avg.ms.__cond_resched.aa_sk_perm.security_socket_recvmsg.sock_recvmsg.__sys_recvfrom
0.09 ? 65% -75.9% 0.02 ? 9% perf-sched.wait_time.avg.ms.__cond_resched.aa_sk_perm.security_socket_sendmsg.sock_sendmsg.__sys_sendto
0.02 ? 22% -70.2% 0.01 ?141% perf-sched.wait_time.avg.ms.__cond_resched.dput.__fput.__x64_sys_close.do_syscall_64
75.51 ? 41% -100.0% 0.04 ? 42% perf-sched.wait_time.avg.ms.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write
0.10 ? 36% -80.3% 0.02 ? 9% perf-sched.wait_time.avg.ms.__cond_resched.kmem_cache_alloc_node.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb
0.55 ? 61% -94.9% 0.03 ? 45% perf-sched.wait_time.avg.ms.__cond_resched.kmem_cache_alloc_node.kmalloc_reserve.__alloc_skb.alloc_skb_with_frags
23.01 ? 17% -100.0% 0.00 ?141% perf-sched.wait_time.avg.ms.__cond_resched.mutex_lock.perf_poll.do_poll.constprop
23.82 ? 7% -99.7% 0.07 ? 57% perf-sched.wait_time.avg.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
95.27 ? 41% -100.0% 0.03 ? 89% perf-sched.wait_time.avg.ms.__cond_resched.shmem_inode_acct_block.shmem_alloc_and_acct_folio.shmem_get_folio_gfp.shmem_write_begin
56.30 ?139% +1005.5% 622.44 ? 5% perf-sched.wait_time.avg.ms.do_nanosleep.hrtimer_nanosleep.common_nsleep.__x64_sys_clock_nanosleep
2.78 ? 66% -98.2% 0.05 ? 52% perf-sched.wait_time.avg.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt
0.07 ? 23% -82.5% 0.01 perf-sched.wait_time.avg.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64
137.37 ? 3% +345.1% 611.40 ? 2% perf-sched.wait_time.avg.ms.schedule_hrtimeout_range_clock.do_poll.constprop.0.do_sys_poll
0.02 ? 5% -41.9% 0.01 ? 3% perf-sched.wait_time.avg.ms.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
536.32 ? 5% -46.5% 286.98 perf-sched.wait_time.avg.ms.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
4.66 ? 20% -56.7% 2.02 ? 26% perf-sched.wait_time.max.ms.__cond_resched.__skb_datagram_iter.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg
0.03 ? 63% +995.0% 0.37 ? 26% perf-sched.wait_time.max.ms.__cond_resched.aa_sk_perm.security_socket_recvmsg.sock_recvmsg.__sys_recvfrom
1.67 ? 87% -92.6% 0.12 ? 57% perf-sched.wait_time.max.ms.__cond_resched.aa_sk_perm.security_socket_sendmsg.sock_sendmsg.__sys_sendto
0.54 ?117% -95.1% 0.03 ?105% perf-sched.wait_time.max.ms.__cond_resched.down_write_killable.exec_mmap.begin_new_exec.load_elf_binary
0.06 ? 49% -89.1% 0.01 ?141% perf-sched.wait_time.max.ms.__cond_resched.dput.__fput.__x64_sys_close.do_syscall_64
604.50 ? 43% -100.0% 0.16 ? 83% perf-sched.wait_time.max.ms.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write
2.77 ? 45% -95.4% 0.13 ? 64% perf-sched.wait_time.max.ms.__cond_resched.kmem_cache_alloc_node.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb
2.86 ? 45% -94.3% 0.16 ? 91% perf-sched.wait_time.max.ms.__cond_resched.kmem_cache_alloc_node.kmalloc_reserve.__alloc_skb.alloc_skb_with_frags
37.41 ? 9% -100.0% 0.01 ?141% perf-sched.wait_time.max.ms.__cond_resched.mutex_lock.perf_poll.do_poll.constprop
27.08 ? 13% -99.7% 0.08 ? 61% perf-sched.wait_time.max.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
275.41 ? 32% -100.0% 0.03 ? 89% perf-sched.wait_time.max.ms.__cond_resched.shmem_inode_acct_block.shmem_alloc_and_acct_folio.shmem_get_folio_gfp.shmem_write_begin
1313 ? 69% +112.1% 2786 ? 15% perf-sched.wait_time.max.ms.__cond_resched.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
334.74 ?140% +198.9% 1000 perf-sched.wait_time.max.ms.do_nanosleep.hrtimer_nanosleep.common_nsleep.__x64_sys_clock_nanosleep
21.74 ? 58% -95.4% 1.00 ?103% perf-sched.wait_time.max.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt
1000 -97.6% 24.49 ? 50% perf-sched.wait_time.max.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64
10.90 ? 27% +682.9% 85.36 ? 6% perf-sched.wait_time.max.ms.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
32.91 ? 58% -63.5% 12.01 ?115% perf-sched.wait_time.max.ms.schedule_timeout.__wait_for_common.wait_for_completion_state.kernel_clone
169.97 ? 7% -49.2% 86.29 ? 15% perf-sched.wait_time.max.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
44.08 -19.8 24.25 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.free_pcppages_bulk.free_unref_page.skb_release_data.__consume_stateless_skb
44.47 -19.6 24.87 perf-profile.calltrace.cycles-pp.free_pcppages_bulk.free_unref_page.skb_release_data.__consume_stateless_skb.udp_recvmsg
43.63 -19.5 24.15 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.free_pcppages_bulk.free_unref_page.skb_release_data
45.62 -19.2 26.39 perf-profile.calltrace.cycles-pp.skb_release_data.__consume_stateless_skb.udp_recvmsg.inet_recvmsg.sock_recvmsg
45.62 -19.2 26.40 perf-profile.calltrace.cycles-pp.__consume_stateless_skb.udp_recvmsg.inet_recvmsg.sock_recvmsg.__sys_recvfrom
45.00 -19.1 25.94 perf-profile.calltrace.cycles-pp.free_unref_page.skb_release_data.__consume_stateless_skb.udp_recvmsg.inet_recvmsg
50.41 -16.8 33.64 ? 39% perf-profile.calltrace.cycles-pp.accept_connections.main.__libc_start_main
50.41 -16.8 33.64 ? 39% perf-profile.calltrace.cycles-pp.accept_connection.accept_connections.main.__libc_start_main
50.41 -16.8 33.64 ? 39% perf-profile.calltrace.cycles-pp.spawn_child.accept_connection.accept_connections.main.__libc_start_main
50.41 -16.8 33.64 ? 39% perf-profile.calltrace.cycles-pp.process_requests.spawn_child.accept_connection.accept_connections.main
99.92 -14.2 85.72 ? 15% perf-profile.calltrace.cycles-pp.main.__libc_start_main
99.96 -14.2 85.77 ? 15% perf-profile.calltrace.cycles-pp.__libc_start_main
50.10 -8.6 41.52 perf-profile.calltrace.cycles-pp.udp_recvmsg.inet_recvmsg.sock_recvmsg.__sys_recvfrom.__x64_sys_recvfrom
50.11 -8.6 41.55 perf-profile.calltrace.cycles-pp.inet_recvmsg.sock_recvmsg.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64
50.13 -8.5 41.64 perf-profile.calltrace.cycles-pp.sock_recvmsg.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe
50.28 -8.0 42.27 perf-profile.calltrace.cycles-pp.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe.recvfrom
50.29 -8.0 42.29 perf-profile.calltrace.cycles-pp.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe.recvfrom.recv_omni
50.31 -7.9 42.42 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.recvfrom.recv_omni.process_requests
50.32 -7.8 42.47 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.recvfrom.recv_omni.process_requests.spawn_child
50.36 -7.6 42.78 perf-profile.calltrace.cycles-pp.recvfrom.recv_omni.process_requests.spawn_child.accept_connection
50.41 -7.3 43.07 perf-profile.calltrace.cycles-pp.recv_omni.process_requests.spawn_child.accept_connection.accept_connections
19.93 ? 2% -6.6 13.36 perf-profile.calltrace.cycles-pp.ip_generic_getfrag.__ip_append_data.ip_make_skb.udp_sendmsg.sock_sendmsg
19.44 ? 2% -6.3 13.16 perf-profile.calltrace.cycles-pp._copy_from_iter.ip_generic_getfrag.__ip_append_data.ip_make_skb.udp_sendmsg
18.99 ? 2% -6.1 12.90 perf-profile.calltrace.cycles-pp.copyin._copy_from_iter.ip_generic_getfrag.__ip_append_data.ip_make_skb
8.95 -5.1 3.82 perf-profile.calltrace.cycles-pp.udp_send_skb.udp_sendmsg.sock_sendmsg.__sys_sendto.__x64_sys_sendto
8.70 -5.0 3.71 perf-profile.calltrace.cycles-pp.ip_send_skb.udp_send_skb.udp_sendmsg.sock_sendmsg.__sys_sendto
8.10 -4.6 3.45 perf-profile.calltrace.cycles-pp.ip_finish_output2.ip_send_skb.udp_send_skb.udp_sendmsg.sock_sendmsg
7.69 -4.4 3.27 perf-profile.calltrace.cycles-pp.__dev_queue_xmit.ip_finish_output2.ip_send_skb.udp_send_skb.udp_sendmsg
6.51 -3.7 2.78 perf-profile.calltrace.cycles-pp.__local_bh_enable_ip.__dev_queue_xmit.ip_finish_output2.ip_send_skb.udp_send_skb
6.47 -3.7 2.75 perf-profile.calltrace.cycles-pp.do_softirq.__local_bh_enable_ip.__dev_queue_xmit.ip_finish_output2.ip_send_skb
6.41 -3.7 2.71 perf-profile.calltrace.cycles-pp.__do_softirq.do_softirq.__local_bh_enable_ip.__dev_queue_xmit.ip_finish_output2
5.88 -3.5 2.43 perf-profile.calltrace.cycles-pp.net_rx_action.__do_softirq.do_softirq.__local_bh_enable_ip.__dev_queue_xmit
5.73 -3.4 2.35 perf-profile.calltrace.cycles-pp.__napi_poll.net_rx_action.__do_softirq.do_softirq.__local_bh_enable_ip
5.69 -3.4 2.33 perf-profile.calltrace.cycles-pp.process_backlog.__napi_poll.net_rx_action.__do_softirq.do_softirq
5.36 -3.2 2.19 perf-profile.calltrace.cycles-pp.__netif_receive_skb_one_core.process_backlog.__napi_poll.net_rx_action.__do_softirq
4.59 -2.7 1.89 perf-profile.calltrace.cycles-pp.ip_local_deliver_finish.__netif_receive_skb_one_core.process_backlog.__napi_poll.net_rx_action
4.55 ? 2% -2.7 1.88 perf-profile.calltrace.cycles-pp.ip_protocol_deliver_rcu.ip_local_deliver_finish.__netif_receive_skb_one_core.process_backlog.__napi_poll
4.40 ? 2% -2.6 1.81 perf-profile.calltrace.cycles-pp.__udp4_lib_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish.__netif_receive_skb_one_core.process_backlog
3.81 ? 2% -2.2 1.57 perf-profile.calltrace.cycles-pp.udp_unicast_rcv_skb.__udp4_lib_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish.__netif_receive_skb_one_core
3.75 ? 2% -2.2 1.55 perf-profile.calltrace.cycles-pp.udp_queue_rcv_one_skb.udp_unicast_rcv_skb.__udp4_lib_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish
2.21 ? 2% -1.6 0.63 perf-profile.calltrace.cycles-pp.__ip_make_skb.ip_make_skb.udp_sendmsg.sock_sendmsg.__sys_sendto
1.94 ? 2% -1.4 0.51 ? 2% perf-profile.calltrace.cycles-pp.__ip_select_ident.__ip_make_skb.ip_make_skb.udp_sendmsg.sock_sendmsg
1.14 -0.6 0.51 perf-profile.calltrace.cycles-pp.sock_alloc_send_pskb.__ip_append_data.ip_make_skb.udp_sendmsg.sock_sendmsg
0.00 +0.5 0.53 ? 2% perf-profile.calltrace.cycles-pp.schedule_idle.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
0.00 +0.7 0.69 perf-profile.calltrace.cycles-pp.sysvec_call_function_single.asm_sysvec_call_function_single.acpi_safe_halt.acpi_idle_enter.cpuidle_enter_state
0.00 +0.7 0.71 perf-profile.calltrace.cycles-pp.__sk_mem_raise_allocated.__sk_mem_schedule.__udp_enqueue_schedule_skb.udp_queue_rcv_one_skb.udp_unicast_rcv_skb
0.00 +0.7 0.72 perf-profile.calltrace.cycles-pp.__sk_mem_schedule.__udp_enqueue_schedule_skb.udp_queue_rcv_one_skb.udp_unicast_rcv_skb.__udp4_lib_rcv
0.00 +1.0 0.99 ? 20% perf-profile.calltrace.cycles-pp.__schedule.schedule.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp
0.00 +1.0 1.01 ? 20% perf-profile.calltrace.cycles-pp.schedule.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
0.00 +1.1 1.05 ? 20% perf-profile.calltrace.cycles-pp.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg.inet_recvmsg
0.00 +1.1 1.12 perf-profile.calltrace.cycles-pp.acpi_safe_halt.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call
0.00 +1.2 1.18 ? 20% perf-profile.calltrace.cycles-pp.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg.inet_recvmsg.sock_recvmsg
0.00 +1.3 1.32 perf-profile.calltrace.cycles-pp.__udp_enqueue_schedule_skb.udp_queue_rcv_one_skb.udp_unicast_rcv_skb.__udp4_lib_rcv.ip_protocol_deliver_rcu
0.00 +2.2 2.23 perf-profile.calltrace.cycles-pp.__skb_recv_udp.udp_recvmsg.inet_recvmsg.sock_recvmsg.__sys_recvfrom
49.51 +2.6 52.08 perf-profile.calltrace.cycles-pp.send_udp_stream.main.__libc_start_main
49.49 +2.6 52.07 perf-profile.calltrace.cycles-pp.send_omni_inner.send_udp_stream.main.__libc_start_main
0.00 +3.0 2.96 ? 2% perf-profile.calltrace.cycles-pp.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle
48.71 +3.0 51.73 perf-profile.calltrace.cycles-pp.sendto.send_omni_inner.send_udp_stream.main.__libc_start_main
0.00 +3.1 3.06 ? 2% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry
0.00 +3.1 3.09 perf-profile.calltrace.cycles-pp.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary
48.34 +3.2 51.56 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.sendto.send_omni_inner.send_udp_stream.main
0.00 +3.3 3.33 ? 2% perf-profile.calltrace.cycles-pp.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
48.13 +3.8 51.96 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.sendto.send_omni_inner.send_udp_stream
47.82 +4.0 51.82 perf-profile.calltrace.cycles-pp.__x64_sys_sendto.do_syscall_64.entry_SYSCALL_64_after_hwframe.sendto.send_omni_inner
47.70 +4.1 51.76 perf-profile.calltrace.cycles-pp.__sys_sendto.__x64_sys_sendto.do_syscall_64.entry_SYSCALL_64_after_hwframe.sendto
0.00 +4.1 4.08 perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
0.00 +4.1 4.10 perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
0.00 +4.1 4.10 perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64_no_verify
0.00 +4.1 4.14 perf-profile.calltrace.cycles-pp.secondary_startup_64_no_verify
0.00 +4.3 4.35 ? 2% perf-profile.calltrace.cycles-pp.asm_sysvec_call_function_single.acpi_safe_halt.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter
46.52 +4.8 51.27 perf-profile.calltrace.cycles-pp.sock_sendmsg.__sys_sendto.__x64_sys_sendto.do_syscall_64.entry_SYSCALL_64_after_hwframe
46.04 +5.0 51.08 perf-profile.calltrace.cycles-pp.udp_sendmsg.sock_sendmsg.__sys_sendto.__x64_sys_sendto.do_syscall_64
3.67 +8.0 11.63 perf-profile.calltrace.cycles-pp.copyout._copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.udp_recvmsg
3.71 +8.1 11.80 perf-profile.calltrace.cycles-pp._copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg
3.96 +8.5 12.42 perf-profile.calltrace.cycles-pp.__skb_datagram_iter.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg.sock_recvmsg
3.96 +8.5 12.44 perf-profile.calltrace.cycles-pp.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg.sock_recvmsg.__sys_recvfrom
35.13 +11.3 46.39 perf-profile.calltrace.cycles-pp.ip_make_skb.udp_sendmsg.sock_sendmsg.__sys_sendto.__x64_sys_sendto
32.68 ? 2% +13.0 45.65 perf-profile.calltrace.cycles-pp.__ip_append_data.ip_make_skb.udp_sendmsg.sock_sendmsg.__sys_sendto
10.27 +20.3 30.59 perf-profile.calltrace.cycles-pp.sk_page_frag_refill.__ip_append_data.ip_make_skb.udp_sendmsg.sock_sendmsg
10.24 +20.3 30.58 perf-profile.calltrace.cycles-pp.skb_page_frag_refill.sk_page_frag_refill.__ip_append_data.ip_make_skb.udp_sendmsg
9.84 +20.5 30.32 perf-profile.calltrace.cycles-pp.__alloc_pages.skb_page_frag_refill.sk_page_frag_refill.__ip_append_data.ip_make_skb
9.59 +20.5 30.11 perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_pages.skb_page_frag_refill.sk_page_frag_refill.__ip_append_data
8.40 +21.0 29.42 perf-profile.calltrace.cycles-pp.rmqueue.get_page_from_freelist.__alloc_pages.skb_page_frag_refill.sk_page_frag_refill
6.13 +21.9 28.05 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.rmqueue_bulk.rmqueue.get_page_from_freelist
6.20 +22.0 28.15 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.rmqueue_bulk.rmqueue.get_page_from_freelist.__alloc_pages
6.46 +22.5 28.91 perf-profile.calltrace.cycles-pp.rmqueue_bulk.rmqueue.get_page_from_freelist.__alloc_pages.skb_page_frag_refill
48.24 -21.8 26.43 perf-profile.children.cycles-pp.skb_release_data
47.19 -21.2 25.98 perf-profile.children.cycles-pp.free_unref_page
44.48 -19.6 24.88 perf-profile.children.cycles-pp.free_pcppages_bulk
45.62 -19.2 26.40 perf-profile.children.cycles-pp.__consume_stateless_skb
99.95 -14.2 85.76 ? 15% perf-profile.children.cycles-pp.main
99.96 -14.2 85.77 ? 15% perf-profile.children.cycles-pp.__libc_start_main
50.10 -8.6 41.53 perf-profile.children.cycles-pp.udp_recvmsg
50.11 -8.6 41.56 perf-profile.children.cycles-pp.inet_recvmsg
50.13 -8.5 41.65 perf-profile.children.cycles-pp.sock_recvmsg
50.29 -8.0 42.28 perf-profile.children.cycles-pp.__sys_recvfrom
50.29 -8.0 42.30 perf-profile.children.cycles-pp.__x64_sys_recvfrom
50.38 -7.5 42.86 perf-profile.children.cycles-pp.recvfrom
50.41 -7.3 43.07 perf-profile.children.cycles-pp.accept_connections
50.41 -7.3 43.07 perf-profile.children.cycles-pp.accept_connection
50.41 -7.3 43.07 perf-profile.children.cycles-pp.spawn_child
50.41 -7.3 43.07 perf-profile.children.cycles-pp.process_requests
50.41 -7.3 43.07 perf-profile.children.cycles-pp.recv_omni
19.96 ? 2% -6.5 13.50 perf-profile.children.cycles-pp.ip_generic_getfrag
19.46 ? 2% -6.2 13.28 perf-profile.children.cycles-pp._copy_from_iter
19.21 ? 2% -6.1 13.14 perf-profile.children.cycles-pp.copyin
8.96 -5.1 3.86 perf-profile.children.cycles-pp.udp_send_skb
8.72 -5.0 3.75 perf-profile.children.cycles-pp.ip_send_skb
8.11 -4.6 3.49 perf-profile.children.cycles-pp.ip_finish_output2
7.72 -4.4 3.32 perf-profile.children.cycles-pp.__dev_queue_xmit
98.71 -4.1 94.59 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
98.51 -4.0 94.46 perf-profile.children.cycles-pp.do_syscall_64
6.49 -3.7 2.78 perf-profile.children.cycles-pp.do_softirq
6.51 -3.7 2.82 perf-profile.children.cycles-pp.__local_bh_enable_ip
6.43 -3.7 2.78 perf-profile.children.cycles-pp.__do_softirq
5.90 -3.4 2.46 perf-profile.children.cycles-pp.net_rx_action
5.74 -3.4 2.38 perf-profile.children.cycles-pp.__napi_poll
5.71 -3.4 2.36 perf-profile.children.cycles-pp.process_backlog
5.37 -3.2 2.21 perf-profile.children.cycles-pp.__netif_receive_skb_one_core
4.60 -2.7 1.91 perf-profile.children.cycles-pp.ip_local_deliver_finish
4.57 ? 2% -2.7 1.90 perf-profile.children.cycles-pp.ip_protocol_deliver_rcu
4.42 ? 2% -2.6 1.83 perf-profile.children.cycles-pp.__udp4_lib_rcv
3.82 ? 2% -2.2 1.58 ? 2% perf-profile.children.cycles-pp.udp_unicast_rcv_skb
3.78 ? 2% -2.2 1.57 ? 2% perf-profile.children.cycles-pp.udp_queue_rcv_one_skb
2.23 ? 2% -1.6 0.65 ? 2% perf-profile.children.cycles-pp.__ip_make_skb
1.95 ? 2% -1.4 0.52 ? 3% perf-profile.children.cycles-pp.__ip_select_ident
1.51 ? 4% -1.2 0.34 perf-profile.children.cycles-pp.free_unref_page_commit
1.17 -0.7 0.51 ? 2% perf-profile.children.cycles-pp.ip_route_output_flow
1.15 -0.6 0.52 perf-profile.children.cycles-pp.sock_alloc_send_pskb
0.91 -0.5 0.39 perf-profile.children.cycles-pp.alloc_skb_with_frags
0.86 -0.5 0.37 perf-profile.children.cycles-pp.__alloc_skb
0.83 -0.5 0.36 ? 2% perf-profile.children.cycles-pp.ip_route_output_key_hash_rcu
0.75 -0.4 0.32 perf-profile.children.cycles-pp.dev_hard_start_xmit
0.72 -0.4 0.31 ? 3% perf-profile.children.cycles-pp.fib_table_lookup
0.67 -0.4 0.28 perf-profile.children.cycles-pp.loopback_xmit
0.70 ? 2% -0.4 0.33 perf-profile.children.cycles-pp.__zone_watermark_ok
0.47 ? 4% -0.3 0.15 perf-profile.children.cycles-pp.kmem_cache_free
0.57 -0.3 0.26 perf-profile.children.cycles-pp.kmem_cache_alloc_node
0.46 -0.3 0.18 ? 2% perf-profile.children.cycles-pp.ip_rcv
0.42 -0.3 0.17 perf-profile.children.cycles-pp.move_addr_to_kernel
0.41 -0.2 0.16 ? 2% perf-profile.children.cycles-pp.__udp4_lib_lookup
0.32 -0.2 0.13 perf-profile.children.cycles-pp.__netif_rx
0.30 -0.2 0.12 perf-profile.children.cycles-pp.netif_rx_internal
0.30 -0.2 0.12 perf-profile.children.cycles-pp._copy_from_user
0.31 -0.2 0.13 perf-profile.children.cycles-pp.kmalloc_reserve
0.63 -0.2 0.46 ? 2% perf-profile.children.cycles-pp.free_unref_page_prepare
0.28 -0.2 0.11 perf-profile.children.cycles-pp.enqueue_to_backlog
0.27 -0.2 0.11 perf-profile.children.cycles-pp.udp4_lib_lookup2
0.29 -0.2 0.13 ? 6% perf-profile.children.cycles-pp.send_data
0.25 -0.2 0.10 perf-profile.children.cycles-pp.__netif_receive_skb_core
0.23 ? 2% -0.1 0.10 ? 4% perf-profile.children.cycles-pp.security_socket_sendmsg
0.19 ? 2% -0.1 0.06 perf-profile.children.cycles-pp.ip_rcv_core
0.37 -0.1 0.24 perf-profile.children.cycles-pp.irqtime_account_irq
0.21 -0.1 0.08 perf-profile.children.cycles-pp.sock_wfree
0.21 ? 3% -0.1 0.08 perf-profile.children.cycles-pp.validate_xmit_skb
0.20 ? 2% -0.1 0.08 perf-profile.children.cycles-pp.ip_output
0.22 ? 2% -0.1 0.10 ? 4% perf-profile.children.cycles-pp.ip_rcv_finish_core
0.20 ? 6% -0.1 0.09 ? 5% perf-profile.children.cycles-pp.__mkroute_output
0.21 ? 2% -0.1 0.09 ? 5% perf-profile.children.cycles-pp._raw_spin_lock_irq
0.28 -0.1 0.18 perf-profile.children.cycles-pp._raw_spin_trylock
0.34 ? 3% -0.1 0.25 perf-profile.children.cycles-pp.__slab_free
0.13 ? 3% -0.1 0.05 perf-profile.children.cycles-pp.siphash_3u32
0.12 ? 4% -0.1 0.03 ? 70% perf-profile.children.cycles-pp.ipv4_pktinfo_prepare
0.14 ? 3% -0.1 0.06 ? 7% perf-profile.children.cycles-pp.__ip_local_out
0.20 ? 2% -0.1 0.12 perf-profile.children.cycles-pp.aa_sk_perm
0.18 ? 2% -0.1 0.10 perf-profile.children.cycles-pp.get_pfnblock_flags_mask
0.12 ? 3% -0.1 0.05 perf-profile.children.cycles-pp.sk_filter_trim_cap
0.13 -0.1 0.06 perf-profile.children.cycles-pp.ip_setup_cork
0.13 ? 7% -0.1 0.06 ? 8% perf-profile.children.cycles-pp.fib_lookup_good_nhc
0.15 ? 3% -0.1 0.08 ? 5% perf-profile.children.cycles-pp.skb_set_owner_w
0.11 ? 4% -0.1 0.05 perf-profile.children.cycles-pp.dst_release
0.23 ? 2% -0.1 0.17 ? 2% perf-profile.children.cycles-pp.__entry_text_start
0.11 -0.1 0.05 perf-profile.children.cycles-pp.ipv4_mtu
0.20 ? 2% -0.1 0.15 ? 3% perf-profile.children.cycles-pp.__list_add_valid_or_report
0.10 -0.1 0.05 perf-profile.children.cycles-pp.ip_send_check
0.31 ? 2% -0.0 0.26 ? 3% perf-profile.children.cycles-pp.sockfd_lookup_light
0.27 -0.0 0.22 ? 2% perf-profile.children.cycles-pp.__fget_light
0.63 -0.0 0.58 perf-profile.children.cycles-pp.__check_object_size
0.15 ? 3% -0.0 0.11 perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack
0.13 -0.0 0.09 ? 5% perf-profile.children.cycles-pp.alloc_pages
0.27 -0.0 0.24 perf-profile.children.cycles-pp.sched_clock_cpu
0.11 ? 4% -0.0 0.08 ? 6% perf-profile.children.cycles-pp.__cond_resched
0.14 ? 3% -0.0 0.11 perf-profile.children.cycles-pp.free_tail_page_prepare
0.11 -0.0 0.08 ? 5% perf-profile.children.cycles-pp.syscall_return_via_sysret
0.09 ? 9% -0.0 0.06 ? 7% perf-profile.children.cycles-pp.__xfrm_policy_check2
0.23 ? 2% -0.0 0.21 ? 2% perf-profile.children.cycles-pp.sched_clock
0.14 ? 3% -0.0 0.11 ? 4% perf-profile.children.cycles-pp.prep_compound_page
0.21 ? 2% -0.0 0.20 ? 2% perf-profile.children.cycles-pp.native_sched_clock
0.06 -0.0 0.05 perf-profile.children.cycles-pp.task_tick_fair
0.06 -0.0 0.05 perf-profile.children.cycles-pp.check_stack_object
0.18 ? 2% +0.0 0.20 ? 2% perf-profile.children.cycles-pp.perf_event_task_tick
0.18 ? 2% +0.0 0.19 ? 2% perf-profile.children.cycles-pp.perf_adjust_freq_unthr_context
0.31 ? 3% +0.0 0.33 perf-profile.children.cycles-pp.tick_sched_handle
0.31 ? 3% +0.0 0.33 perf-profile.children.cycles-pp.update_process_times
0.41 ? 2% +0.0 0.43 perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt
0.40 ? 2% +0.0 0.42 perf-profile.children.cycles-pp.hrtimer_interrupt
0.32 ? 2% +0.0 0.34 perf-profile.children.cycles-pp.tick_sched_timer
0.36 ? 2% +0.0 0.39 perf-profile.children.cycles-pp.__hrtimer_run_queues
0.06 ? 7% +0.0 0.10 ? 4% perf-profile.children.cycles-pp.exit_to_user_mode_prepare
0.05 ? 8% +0.0 0.10 perf-profile.children.cycles-pp._raw_spin_lock_bh
0.00 +0.1 0.05 perf-profile.children.cycles-pp.update_cfs_group
0.00 +0.1 0.05 perf-profile.children.cycles-pp.cpuidle_governor_latency_req
0.00 +0.1 0.05 perf-profile.children.cycles-pp.flush_smp_call_function_queue
0.00 +0.1 0.05 ? 8% perf-profile.children.cycles-pp.prepare_to_wait_exclusive
0.07 +0.1 0.13 ? 3% perf-profile.children.cycles-pp.__mod_zone_page_state
0.00 +0.1 0.06 ? 13% perf-profile.children.cycles-pp.cgroup_rstat_updated
0.00 +0.1 0.06 perf-profile.children.cycles-pp.__x2apic_send_IPI_dest
0.00 +0.1 0.06 perf-profile.children.cycles-pp.security_socket_recvmsg
0.00 +0.1 0.06 perf-profile.children.cycles-pp.select_task_rq_fair
0.00 +0.1 0.06 perf-profile.children.cycles-pp.tick_irq_enter
0.00 +0.1 0.06 perf-profile.children.cycles-pp.tick_nohz_idle_enter
0.42 ? 2% +0.1 0.49 ? 2% perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt
0.00 +0.1 0.07 ? 7% perf-profile.children.cycles-pp.ktime_get
0.00 +0.1 0.07 perf-profile.children.cycles-pp.__get_user_4
0.00 +0.1 0.07 perf-profile.children.cycles-pp.update_rq_clock
0.00 +0.1 0.07 perf-profile.children.cycles-pp.select_task_rq
0.00 +0.1 0.07 perf-profile.children.cycles-pp.native_apic_msr_eoi
0.49 +0.1 0.57 ? 2% perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt
0.11 ? 11% +0.1 0.19 ? 2% perf-profile.children.cycles-pp._raw_spin_lock
0.00 +0.1 0.08 perf-profile.children.cycles-pp.update_rq_clock_task
0.00 +0.1 0.08 perf-profile.children.cycles-pp.__update_load_avg_se
0.00 +0.1 0.09 ? 5% perf-profile.children.cycles-pp.irq_enter_rcu
0.00 +0.1 0.09 ? 5% perf-profile.children.cycles-pp.__irq_exit_rcu
0.00 +0.1 0.09 perf-profile.children.cycles-pp.__update_load_avg_cfs_rq
0.00 +0.1 0.09 perf-profile.children.cycles-pp.update_blocked_averages
0.00 +0.1 0.09 perf-profile.children.cycles-pp.update_sg_lb_stats
0.00 +0.1 0.09 ? 5% perf-profile.children.cycles-pp.set_next_entity
0.00 +0.1 0.10 perf-profile.children.cycles-pp.__switch_to_asm
0.00 +0.1 0.11 ? 12% perf-profile.children.cycles-pp._copy_to_user
0.00 +0.1 0.12 ? 3% perf-profile.children.cycles-pp.menu_select
0.00 +0.1 0.12 ? 3% perf-profile.children.cycles-pp.recv_data
0.00 +0.1 0.12 ? 3% perf-profile.children.cycles-pp.update_sd_lb_stats
0.00 +0.1 0.13 ? 3% perf-profile.children.cycles-pp.native_irq_return_iret
0.00 +0.1 0.13 ? 3% perf-profile.children.cycles-pp.__switch_to
0.00 +0.1 0.13 ? 3% perf-profile.children.cycles-pp.find_busiest_group
0.00 +0.1 0.14 perf-profile.children.cycles-pp.finish_task_switch
0.00 +0.1 0.15 ? 3% perf-profile.children.cycles-pp.update_curr
0.00 +0.2 0.15 ? 3% perf-profile.children.cycles-pp.mem_cgroup_uncharge_skmem
0.00 +0.2 0.16 perf-profile.children.cycles-pp.ttwu_queue_wakelist
0.05 +0.2 0.22 ? 2% perf-profile.children.cycles-pp.page_counter_try_charge
0.00 +0.2 0.17 ? 2% perf-profile.children.cycles-pp.load_balance
0.00 +0.2 0.17 ? 2% perf-profile.children.cycles-pp.___perf_sw_event
0.02 ?141% +0.2 0.19 ? 2% perf-profile.children.cycles-pp.page_counter_uncharge
0.33 +0.2 0.52 perf-profile.children.cycles-pp.__free_one_page
0.02 ?141% +0.2 0.21 ? 2% perf-profile.children.cycles-pp.drain_stock
0.00 +0.2 0.20 ? 2% perf-profile.children.cycles-pp.prepare_task_switch
0.16 ? 3% +0.2 0.38 ? 2% perf-profile.children.cycles-pp.simple_copy_to_iter
0.07 ? 11% +0.2 0.31 perf-profile.children.cycles-pp.refill_stock
0.07 ? 6% +0.2 0.31 ? 4% perf-profile.children.cycles-pp.move_addr_to_user
0.00 +0.2 0.24 perf-profile.children.cycles-pp.enqueue_entity
0.00 +0.2 0.25 perf-profile.children.cycles-pp.update_load_avg
0.21 ? 2% +0.3 0.48 perf-profile.children.cycles-pp.__list_del_entry_valid_or_report
0.00 +0.3 0.31 ? 4% perf-profile.children.cycles-pp.dequeue_entity
0.08 ? 5% +0.3 0.40 ? 3% perf-profile.children.cycles-pp.try_charge_memcg
0.00 +0.3 0.33 perf-profile.children.cycles-pp.enqueue_task_fair
0.00 +0.4 0.35 ? 2% perf-profile.children.cycles-pp.dequeue_task_fair
0.00 +0.4 0.35 ? 2% perf-profile.children.cycles-pp.activate_task
0.00 +0.4 0.36 ? 2% perf-profile.children.cycles-pp.try_to_wake_up
0.00 +0.4 0.37 ? 2% perf-profile.children.cycles-pp.autoremove_wake_function
0.00 +0.4 0.39 ? 3% perf-profile.children.cycles-pp.newidle_balance
0.12 ? 8% +0.4 0.51 ? 2% perf-profile.children.cycles-pp.mem_cgroup_charge_skmem
0.00 +0.4 0.39 perf-profile.children.cycles-pp.ttwu_do_activate
0.00 +0.4 0.40 ? 2% perf-profile.children.cycles-pp.__wake_up_common
0.18 ? 4% +0.4 0.59 perf-profile.children.cycles-pp.udp_rmem_release
0.11 ? 7% +0.4 0.52 perf-profile.children.cycles-pp.__sk_mem_reduce_allocated
0.00 +0.4 0.43 perf-profile.children.cycles-pp.__wake_up_common_lock
0.00 +0.5 0.46 perf-profile.children.cycles-pp.sched_ttwu_pending
0.00 +0.5 0.49 perf-profile.children.cycles-pp.sock_def_readable
0.00 +0.5 0.53 ? 2% perf-profile.children.cycles-pp.pick_next_task_fair
0.00 +0.5 0.54 ? 2% perf-profile.children.cycles-pp.schedule_idle
0.00 +0.6 0.55 perf-profile.children.cycles-pp.__flush_smp_call_function_queue
0.15 ? 3% +0.6 0.73 ? 2% perf-profile.children.cycles-pp.__sk_mem_raise_allocated
0.00 +0.6 0.57 perf-profile.children.cycles-pp.__sysvec_call_function_single
0.16 ? 5% +0.6 0.74 ? 2% perf-profile.children.cycles-pp.__sk_mem_schedule
0.00 +0.8 0.78 perf-profile.children.cycles-pp.sysvec_call_function_single
0.41 ? 3% +0.9 1.33 ? 2% perf-profile.children.cycles-pp.__udp_enqueue_schedule_skb
0.00 +1.2 1.16 ? 2% perf-profile.children.cycles-pp.schedule
0.00 +1.2 1.21 ? 2% perf-profile.children.cycles-pp.schedule_timeout
0.00 +1.3 1.33 ? 2% perf-profile.children.cycles-pp.__skb_wait_for_more_packets
0.00 +1.7 1.66 ? 2% perf-profile.children.cycles-pp.__schedule
0.27 ? 3% +2.0 2.25 perf-profile.children.cycles-pp.__skb_recv_udp
50.41 +2.4 52.81 perf-profile.children.cycles-pp._raw_spin_lock_irqsave
0.00 +2.7 2.68 perf-profile.children.cycles-pp.asm_sysvec_call_function_single
49.78 +2.7 52.49 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
0.00 +3.0 2.98 perf-profile.children.cycles-pp.acpi_safe_halt
0.00 +3.0 3.00 perf-profile.children.cycles-pp.acpi_idle_enter
49.51 +3.1 52.57 perf-profile.children.cycles-pp.send_udp_stream
49.50 +3.1 52.56 perf-profile.children.cycles-pp.send_omni_inner
0.00 +3.1 3.10 perf-profile.children.cycles-pp.cpuidle_enter_state
0.00 +3.1 3.12 perf-profile.children.cycles-pp.cpuidle_enter
0.00 +3.4 3.37 perf-profile.children.cycles-pp.cpuidle_idle_call
48.90 +3.4 52.30 perf-profile.children.cycles-pp.sendto
47.85 +4.0 51.83 perf-profile.children.cycles-pp.__x64_sys_sendto
47.73 +4.0 51.77 perf-profile.children.cycles-pp.__sys_sendto
0.00 +4.1 4.10 perf-profile.children.cycles-pp.start_secondary
0.00 +4.1 4.13 perf-profile.children.cycles-pp.do_idle
0.00 +4.1 4.14 perf-profile.children.cycles-pp.secondary_startup_64_no_verify
0.00 +4.1 4.14 perf-profile.children.cycles-pp.cpu_startup_entry
46.54 +4.7 51.28 perf-profile.children.cycles-pp.sock_sendmsg
46.10 +5.0 51.11 perf-profile.children.cycles-pp.udp_sendmsg
3.70 +8.0 11.71 perf-profile.children.cycles-pp.copyout
3.71 +8.1 11.80 perf-profile.children.cycles-pp._copy_to_iter
3.96 +8.5 12.43 perf-profile.children.cycles-pp.__skb_datagram_iter
3.96 +8.5 12.44 perf-profile.children.cycles-pp.skb_copy_datagram_iter
35.14 +11.3 46.40 perf-profile.children.cycles-pp.ip_make_skb
32.71 ? 2% +13.0 45.66 perf-profile.children.cycles-pp.__ip_append_data
10.28 +20.6 30.89 perf-profile.children.cycles-pp.sk_page_frag_refill
10.25 +20.6 30.88 perf-profile.children.cycles-pp.skb_page_frag_refill
9.86 +20.8 30.63 perf-profile.children.cycles-pp.__alloc_pages
9.62 +20.8 30.42 perf-profile.children.cycles-pp.get_page_from_freelist
8.42 +21.3 29.72 perf-profile.children.cycles-pp.rmqueue
6.47 +22.8 29.22 perf-profile.children.cycles-pp.rmqueue_bulk
19.11 ? 2% -6.0 13.08 perf-profile.self.cycles-pp.copyin
1.81 ? 2% -1.4 0.39 perf-profile.self.cycles-pp.rmqueue
1.81 ? 2% -1.3 0.46 ? 2% perf-profile.self.cycles-pp.__ip_select_ident
1.47 ? 4% -1.2 0.31 perf-profile.self.cycles-pp.free_unref_page_commit
1.29 ? 2% -0.5 0.75 perf-profile.self.cycles-pp.__ip_append_data
0.71 -0.4 0.29 perf-profile.self.cycles-pp.udp_sendmsg
0.68 ? 2% -0.4 0.32 perf-profile.self.cycles-pp.__zone_watermark_ok
0.50 -0.3 0.16 perf-profile.self.cycles-pp.skb_release_data
0.59 ? 3% -0.3 0.26 ? 3% perf-profile.self.cycles-pp.fib_table_lookup
0.46 ? 4% -0.3 0.15 ? 3% perf-profile.self.cycles-pp.kmem_cache_free
0.63 -0.3 0.33 ? 2% perf-profile.self.cycles-pp._raw_spin_lock_irqsave
0.47 -0.3 0.19 perf-profile.self.cycles-pp.__sys_sendto
0.44 -0.2 0.21 ? 2% perf-profile.self.cycles-pp.kmem_cache_alloc_node
0.36 -0.2 0.16 ? 3% perf-profile.self.cycles-pp.send_omni_inner
0.35 ? 2% -0.2 0.15 ? 3% perf-profile.self.cycles-pp.ip_finish_output2
0.29 -0.2 0.12 perf-profile.self.cycles-pp._copy_from_user
0.24 -0.1 0.10 ? 4% perf-profile.self.cycles-pp.__netif_receive_skb_core
0.22 ? 2% -0.1 0.08 ? 5% perf-profile.self.cycles-pp.free_unref_page
0.19 ? 2% -0.1 0.06 perf-profile.self.cycles-pp.ip_rcv_core
0.21 ? 2% -0.1 0.08 perf-profile.self.cycles-pp.__alloc_skb
0.20 ? 2% -0.1 0.08 perf-profile.self.cycles-pp.sock_wfree
0.22 ? 2% -0.1 0.10 ? 4% perf-profile.self.cycles-pp.send_data
0.21 -0.1 0.09 perf-profile.self.cycles-pp.sendto
0.21 ? 2% -0.1 0.10 ? 4% perf-profile.self.cycles-pp.ip_rcv_finish_core
0.21 ? 2% -0.1 0.09 ? 5% perf-profile.self.cycles-pp.__ip_make_skb
0.20 ? 4% -0.1 0.09 ? 5% perf-profile.self.cycles-pp._raw_spin_lock_irq
0.21 ? 2% -0.1 0.10 ? 4% perf-profile.self.cycles-pp.__dev_queue_xmit
0.38 ? 3% -0.1 0.27 perf-profile.self.cycles-pp.get_page_from_freelist
0.20 ? 2% -0.1 0.09 perf-profile.self.cycles-pp.udp_send_skb
0.18 ? 2% -0.1 0.07 perf-profile.self.cycles-pp.__udp_enqueue_schedule_skb
0.18 ? 4% -0.1 0.08 ? 6% perf-profile.self.cycles-pp.__mkroute_output
0.25 -0.1 0.15 ? 3% perf-profile.self.cycles-pp._copy_from_iter
0.27 ? 4% -0.1 0.17 ? 2% perf-profile.self.cycles-pp.skb_page_frag_refill
0.16 -0.1 0.06 ? 7% perf-profile.self.cycles-pp.sock_sendmsg
0.33 ? 2% -0.1 0.24 perf-profile.self.cycles-pp.__slab_free
0.15 ? 3% -0.1 0.06 perf-profile.self.cycles-pp.udp4_lib_lookup2
0.38 ? 2% -0.1 0.29 ? 2% perf-profile.self.cycles-pp.free_unref_page_prepare
0.26 -0.1 0.17 perf-profile.self.cycles-pp._raw_spin_trylock
0.15 -0.1 0.06 perf-profile.self.cycles-pp.ip_output
0.14 -0.1 0.05 ? 8% perf-profile.self.cycles-pp.process_backlog
0.14 -0.1 0.06 perf-profile.self.cycles-pp.ip_route_output_flow
0.14 -0.1 0.06 perf-profile.self.cycles-pp.__udp4_lib_lookup
0.21 ? 2% -0.1 0.13 ? 3% perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe
0.12 ? 3% -0.1 0.05 perf-profile.self.cycles-pp.siphash_3u32
0.13 ? 3% -0.1 0.06 ? 8% perf-profile.self.cycles-pp.ip_send_skb
0.17 -0.1 0.10 perf-profile.self.cycles-pp.__do_softirq
0.15 ? 3% -0.1 0.08 ? 5% perf-profile.self.cycles-pp.skb_set_owner_w
0.17 ? 2% -0.1 0.10 ? 4% perf-profile.self.cycles-pp.aa_sk_perm
0.12 -0.1 0.05 perf-profile.self.cycles-pp.__x64_sys_sendto
0.12 ? 6% -0.1 0.05 perf-profile.self.cycles-pp.fib_lookup_good_nhc
0.19 ? 2% -0.1 0.13 perf-profile.self.cycles-pp.__list_add_valid_or_report
0.14 ? 3% -0.1 0.07 ? 6% perf-profile.self.cycles-pp.net_rx_action
0.16 ? 2% -0.1 0.10 perf-profile.self.cycles-pp.do_syscall_64
0.11 -0.1 0.05 perf-profile.self.cycles-pp.__udp4_lib_rcv
0.16 ? 3% -0.1 0.10 ? 4% perf-profile.self.cycles-pp.get_pfnblock_flags_mask
0.11 ? 4% -0.1 0.05 perf-profile.self.cycles-pp.ip_route_output_key_hash_rcu
0.10 ? 4% -0.1 0.05 perf-profile.self.cycles-pp.ip_generic_getfrag
0.10 -0.1 0.05 perf-profile.self.cycles-pp.ipv4_mtu
0.26 -0.0 0.21 ? 2% perf-profile.self.cycles-pp.__fget_light
0.15 ? 3% -0.0 0.11 ? 4% perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack
0.24 -0.0 0.20 ? 2% perf-profile.self.cycles-pp.__alloc_pages
0.15 ? 3% -0.0 0.12 perf-profile.self.cycles-pp.__check_object_size
0.11 -0.0 0.08 ? 6% perf-profile.self.cycles-pp.syscall_return_via_sysret
0.08 ? 5% -0.0 0.05 perf-profile.self.cycles-pp.loopback_xmit
0.13 -0.0 0.11 ? 4% perf-profile.self.cycles-pp.prep_compound_page
0.11 -0.0 0.09 ? 5% perf-profile.self.cycles-pp.irqtime_account_irq
0.09 ? 10% -0.0 0.06 ? 7% perf-profile.self.cycles-pp.__xfrm_policy_check2
0.07 -0.0 0.05 perf-profile.self.cycles-pp.alloc_pages
0.08 -0.0 0.06 ? 7% perf-profile.self.cycles-pp.__entry_text_start
0.09 ? 5% -0.0 0.07 perf-profile.self.cycles-pp.free_tail_page_prepare
0.10 +0.0 0.11 perf-profile.self.cycles-pp.perf_adjust_freq_unthr_context
0.06 +0.0 0.08 ? 6% perf-profile.self.cycles-pp.free_pcppages_bulk
0.05 ? 8% +0.0 0.10 ? 4% perf-profile.self.cycles-pp._raw_spin_lock_bh
0.07 +0.0 0.12 perf-profile.self.cycles-pp.__mod_zone_page_state
0.00 +0.1 0.05 perf-profile.self.cycles-pp.cpuidle_idle_call
0.00 +0.1 0.05 perf-profile.self.cycles-pp.udp_rmem_release
0.00 +0.1 0.05 perf-profile.self.cycles-pp.__flush_smp_call_function_queue
0.00 +0.1 0.05 perf-profile.self.cycles-pp.sock_def_readable
0.00 +0.1 0.05 perf-profile.self.cycles-pp.update_cfs_group
0.11 ? 11% +0.1 0.17 ? 2% perf-profile.self.cycles-pp._raw_spin_lock
0.00 +0.1 0.05 ? 8% perf-profile.self.cycles-pp.finish_task_switch
0.00 +0.1 0.05 ? 8% perf-profile.self.cycles-pp.cgroup_rstat_updated
0.00 +0.1 0.06 perf-profile.self.cycles-pp.do_idle
0.00 +0.1 0.06 perf-profile.self.cycles-pp.__skb_wait_for_more_packets
0.00 +0.1 0.06 perf-profile.self.cycles-pp.__x2apic_send_IPI_dest
0.00 +0.1 0.06 ? 7% perf-profile.self.cycles-pp.enqueue_entity
0.00 +0.1 0.07 ? 7% perf-profile.self.cycles-pp.schedule_timeout
0.00 +0.1 0.07 ? 7% perf-profile.self.cycles-pp.move_addr_to_user
0.00 +0.1 0.07 ? 7% perf-profile.self.cycles-pp.menu_select
0.00 +0.1 0.07 ? 7% perf-profile.self.cycles-pp.native_apic_msr_eoi
0.00 +0.1 0.07 ? 7% perf-profile.self.cycles-pp.update_sg_lb_stats
0.00 +0.1 0.07 perf-profile.self.cycles-pp.__update_load_avg_se
0.00 +0.1 0.07 perf-profile.self.cycles-pp.__get_user_4
0.00 +0.1 0.08 ? 6% perf-profile.self.cycles-pp.__sk_mem_reduce_allocated
0.00 +0.1 0.08 perf-profile.self.cycles-pp.update_curr
0.00 +0.1 0.08 ? 5% perf-profile.self.cycles-pp.__update_load_avg_cfs_rq
0.00 +0.1 0.09 ? 5% perf-profile.self.cycles-pp.try_to_wake_up
0.00 +0.1 0.09 perf-profile.self.cycles-pp.recvfrom
0.00 +0.1 0.09 perf-profile.self.cycles-pp.mem_cgroup_charge_skmem
0.00 +0.1 0.09 perf-profile.self.cycles-pp.update_load_avg
0.00 +0.1 0.09 ? 5% perf-profile.self.cycles-pp.enqueue_task_fair
0.00 +0.1 0.10 ? 4% perf-profile.self.cycles-pp._copy_to_iter
0.00 +0.1 0.10 ? 4% perf-profile.self.cycles-pp.newidle_balance
0.00 +0.1 0.10 ? 4% perf-profile.self.cycles-pp.recv_data
0.00 +0.1 0.10 perf-profile.self.cycles-pp.refill_stock
0.00 +0.1 0.10 perf-profile.self.cycles-pp.__switch_to_asm
0.00 +0.1 0.11 ? 15% perf-profile.self.cycles-pp._copy_to_user
0.00 +0.1 0.12 perf-profile.self.cycles-pp.recv_omni
0.00 +0.1 0.12 perf-profile.self.cycles-pp.mem_cgroup_uncharge_skmem
0.00 +0.1 0.13 ? 3% perf-profile.self.cycles-pp.native_irq_return_iret
0.00 +0.1 0.13 perf-profile.self.cycles-pp.__switch_to
0.06 +0.1 0.20 ? 2% perf-profile.self.cycles-pp.rmqueue_bulk
0.09 ? 5% +0.1 0.23 ? 4% perf-profile.self.cycles-pp.udp_recvmsg
0.00 +0.1 0.14 ? 3% perf-profile.self.cycles-pp.__skb_recv_udp
0.00 +0.1 0.14 ? 3% perf-profile.self.cycles-pp.___perf_sw_event
0.08 +0.1 0.22 ? 2% perf-profile.self.cycles-pp.__skb_datagram_iter
0.03 ? 70% +0.2 0.20 ? 4% perf-profile.self.cycles-pp.page_counter_try_charge
0.02 ?141% +0.2 0.18 ? 4% perf-profile.self.cycles-pp.__sys_recvfrom
0.00 +0.2 0.17 ? 2% perf-profile.self.cycles-pp.__schedule
0.00 +0.2 0.17 ? 2% perf-profile.self.cycles-pp.try_charge_memcg
0.00 +0.2 0.17 ? 2% perf-profile.self.cycles-pp.page_counter_uncharge
0.00 +0.2 0.21 ? 2% perf-profile.self.cycles-pp.__sk_mem_raise_allocated
0.14 ? 3% +0.2 0.36 perf-profile.self.cycles-pp.__free_one_page
0.20 ? 2% +0.3 0.47 perf-profile.self.cycles-pp.__list_del_entry_valid_or_report
0.00 +2.1 2.07 ? 2% perf-profile.self.cycles-pp.acpi_safe_halt
49.78 +2.7 52.49 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
3.68 +8.0 11.64 perf-profile.self.cycles-pp.copyout
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Hi,
kernel test robot <[email protected]> writes:
> hi, Huang Ying,
>
> sorry for late of this report.
> we reported
> "a 14.6% improvement of netperf.Throughput_Mbps"
> in
> https://lore.kernel.org/all/[email protected]/
>
> later, our auto-bisect tool captured a regression on a netperf test with
> different configurations, however, unfortunately, regarded it as 'reported'
> so we missed this report at the first time.
>
> now send again FYI.
>
>
> Hello,
>
> kernel test robot noticed a -60.4% regression of netperf.Throughput_Mbps on:
>
>
> commit: f5ddc662f07d7d99e9cfc5e07778e26c7394caf8 ("[PATCH -V3 3/9] mm, pcp: reduce lock contention for draining high-order pages")
> url: https://github.com/intel-lab-lkp/linux/commits/Huang-Ying/mm-pcp-avoid-to-drain-PCP-when-process-exit/20231017-143633
> base: https://git.kernel.org/cgit/linux/kernel/git/gregkh/driver-core.git 36b2d7dd5a8ac95c8c1e69bdc93c4a6e2dc28a23
> patch link: https://lore.kernel.org/all/[email protected]/
> patch subject: [PATCH -V3 3/9] mm, pcp: reduce lock contention for draining high-order pages
>
> testcase: netperf
> test machine: 128 threads 2 sockets Intel(R) Xeon(R) Gold 6338 CPU @ 2.00GHz (Ice Lake) with 256G memory
> parameters:
>
> ip: ipv4
> runtime: 300s
> nr_threads: 50%
> cluster: cs-localhost
> test: UDP_STREAM
> cpufreq_governor: performance
>
>
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <[email protected]>
> | Closes: https://lore.kernel.org/oe-lkp/[email protected]
>
>
> Details are as below:
> -------------------------------------------------------------------------------------------------->
>
>
> The kernel config and materials to reproduce are available at:
> https://download.01.org/0day-ci/archive/20231106/[email protected]
>
> =========================================================================================
> cluster/compiler/cpufreq_governor/ip/kconfig/nr_threads/rootfs/runtime/tbox_group/test/testcase:
> cs-localhost/gcc-12/performance/ipv4/x86_64-rhel-8.3/50%/debian-11.1-x86_64-20220510.cgz/300s/lkp-icl-2sp2/UDP_STREAM/netperf
>
> commit:
> c828e65251 ("cacheinfo: calculate size of per-CPU data cache slice")
> f5ddc662f0 ("mm, pcp: reduce lock contention for draining high-order pages")
>
> c828e65251502516 f5ddc662f07d7d99e9cfc5e0777
> ---------------- ---------------------------
> %stddev %change %stddev
> \ | \
> 7321 4% +28.2% 9382 uptime.idle
> 50.65 4% -4.0% 48.64 boot-time.boot
> 6042 4% -4.2% 5785 boot-time.idle
> 1.089e+09 2% +232.1% 3.618e+09 cpuidle..time
> 1087075 2% +24095.8% 2.63e+08 cpuidle..usage
> 3357014 +99.9% 6710312 vmstat.memory.cache
> 48731 19% +4666.5% 2322787 vmstat.system.cs
> 144637 +711.2% 1173334 vmstat.system.in
> 2.59 2% +6.2 8.79 mpstat.cpu.all.idle%
> 1.01 +0.7 1.66 mpstat.cpu.all.irq%
> 6.00 -3.2 2.79 mpstat.cpu.all.soft%
> 1.13 2% -0.1 1.02 mpstat.cpu.all.usr%
> 1.407e+09 3% -28.2% 1.011e+09 numa-numastat.node0.local_node
> 1.407e+09 3% -28.2% 1.01e+09 numa-numastat.node0.numa_hit
> 1.469e+09 8% -32.0% 9.979e+08 numa-numastat.node1.local_node
> 1.469e+09 8% -32.1% 9.974e+08 numa-numastat.node1.numa_hit
> 103.00 19% -44.0% 57.67 20% perf-c2c.DRAM.local
> 8970 12% -89.4% 951.00 4% perf-c2c.DRAM.remote
> 8192 5% +68.5% 13807 perf-c2c.HITM.local
> 6675 11% -92.6% 491.00 2% perf-c2c.HITM.remote
> 1051014 2% +24922.0% 2.63e+08 turbostat.C1
> 2.75 2% +6.5 9.29 turbostat.C1%
> 2.72 2% +178.3% 7.57 turbostat.CPU%c1
> 0.09 -22.2% 0.07 turbostat.IPC
> 44589125 +701.5% 3.574e+08 turbostat.IRQ
> 313.00 57% +1967.0% 6469 8% turbostat.POLL
> 70.33 +3.3% 72.67 turbostat.PkgTmp
> 44.23 4% -31.8% 30.15 2% turbostat.RAMWatt
> 536096 +583.7% 3665194 meminfo.Active
> 535414 +584.4% 3664543 meminfo.Active(anon)
> 3238301 +103.2% 6579677 meminfo.Cached
> 1204424 +278.9% 4563575 meminfo.Committed_AS
> 469093 +47.9% 693889 3% meminfo.Inactive
> 467250 +48.4% 693496 3% meminfo.Inactive(anon)
> 53615 +562.5% 355225 4% meminfo.Mapped
> 5223078 +64.1% 8571212 meminfo.Memused
> 557305 +599.6% 3899111 meminfo.Shmem
> 5660207 +58.9% 8993642 meminfo.max_used_kB
> 78504 3% -30.1% 54869 netperf.ThroughputBoth_Mbps
> 5024292 3% -30.1% 3511666 netperf.ThroughputBoth_total_Mbps
> 7673 5% +249.7% 26832 netperf.ThroughputRecv_Mbps
> 491074 5% +249.7% 1717287 netperf.ThroughputRecv_total_Mbps
> 70831 2% -60.4% 28037 netperf.Throughput_Mbps
> 4533217 2% -60.4% 1794379 netperf.Throughput_total_Mbps
This is a UDP test. So the sender will not wait for receiver. In the
result, you can find that the sender throughput reduces 60.4%, while the
receiver throughput increases 249.7%. And, much less packets are
dropped during the test, and this is good too.
All in all, considering the performance of both the sender and the
receiver, I think the patch helps the performance.
--
Best Regards,
Huang, Ying
> 5439 +9.4% 5949 netperf.time.percent_of_cpu_this_job_got
> 16206 +9.4% 17728 netperf.time.system_time
> 388.14 -51.9% 186.53 netperf.time.user_time
> 2.876e+09 3% -30.1% 2.01e+09 netperf.workload
> 177360 30% -36.0% 113450 20% numa-meminfo.node0.AnonPages
> 255926 12% -40.6% 152052 12% numa-meminfo.node0.AnonPages.max
> 22582 61% +484.2% 131916 90% numa-meminfo.node0.Mapped
> 138287 17% +22.6% 169534 12% numa-meminfo.node1.AnonHugePages
> 267468 20% +29.1% 345385 6% numa-meminfo.node1.AnonPages
> 346204 18% +34.5% 465696 2% numa-meminfo.node1.AnonPages.max
> 279416 19% +77.0% 494652 18% numa-meminfo.node1.Inactive
> 278445 19% +77.6% 494393 18% numa-meminfo.node1.Inactive(anon)
> 31726 45% +607.7% 224533 45% numa-meminfo.node1.Mapped
> 4802 6% +19.4% 5733 3% numa-meminfo.node1.PageTables
> 297323 12% +792.6% 2653850 63% numa-meminfo.node1.Shmem
> 44325 30% -36.0% 28379 20% numa-vmstat.node0.nr_anon_pages
> 5590 61% +491.0% 33042 90% numa-vmstat.node0.nr_mapped
> 1.407e+09 3% -28.2% 1.01e+09 numa-vmstat.node0.numa_hit
> 1.407e+09 3% -28.2% 1.011e+09 numa-vmstat.node0.numa_local
> 66858 20% +29.2% 86385 6% numa-vmstat.node1.nr_anon_pages
> 69601 20% +77.8% 123729 18% numa-vmstat.node1.nr_inactive_anon
> 7953 45% +608.3% 56335 45% numa-vmstat.node1.nr_mapped
> 1201 6% +19.4% 1434 3% numa-vmstat.node1.nr_page_table_pages
> 74288 11% +792.6% 663111 63% numa-vmstat.node1.nr_shmem
> 69601 20% +77.8% 123728 18% numa-vmstat.node1.nr_zone_inactive_anon
> 1.469e+09 8% -32.1% 9.974e+08 numa-vmstat.node1.numa_hit
> 1.469e+09 8% -32.0% 9.979e+08 numa-vmstat.node1.numa_local
> 133919 +584.2% 916254 proc-vmstat.nr_active_anon
> 111196 +3.3% 114828 proc-vmstat.nr_anon_pages
> 5602484 -1.5% 5518799 proc-vmstat.nr_dirty_background_threshold
> 11218668 -1.5% 11051092 proc-vmstat.nr_dirty_threshold
> 809646 +103.2% 1645012 proc-vmstat.nr_file_pages
> 56374629 -1.5% 55536913 proc-vmstat.nr_free_pages
> 116775 +48.4% 173349 3% proc-vmstat.nr_inactive_anon
> 13386 2% +563.3% 88793 4% proc-vmstat.nr_mapped
> 2286 +6.5% 2434 proc-vmstat.nr_page_table_pages
> 139393 +599.4% 974869 proc-vmstat.nr_shmem
> 29092 +6.6% 31019 proc-vmstat.nr_slab_reclaimable
> 133919 +584.2% 916254 proc-vmstat.nr_zone_active_anon
> 116775 +48.4% 173349 3% proc-vmstat.nr_zone_inactive_anon
> 32135 11% +257.2% 114797 21% proc-vmstat.numa_hint_faults
> 20858 16% +318.3% 87244 6% proc-vmstat.numa_hint_faults_local
> 2.876e+09 3% -30.2% 2.008e+09 proc-vmstat.numa_hit
> 2.876e+09 3% -30.2% 2.008e+09 proc-vmstat.numa_local
> 25453 7% -75.2% 6324 30% proc-vmstat.numa_pages_migrated
> 178224 2% +76.6% 314680 7% proc-vmstat.numa_pte_updates
> 160889 3% +267.6% 591393 6% proc-vmstat.pgactivate
> 2.295e+10 3% -30.2% 1.601e+10 proc-vmstat.pgalloc_normal
> 1026605 +21.9% 1251671 proc-vmstat.pgfault
> 2.295e+10 3% -30.2% 1.601e+10 proc-vmstat.pgfree
> 25453 7% -75.2% 6324 30% proc-vmstat.pgmigrate_success
> 39208 2% -6.1% 36815 proc-vmstat.pgreuse
> 3164416 -20.3% 2521344 2% proc-vmstat.unevictable_pgs_scanned
> 19248627 -22.1% 14989905 sched_debug.cfs_rq:/.avg_vruntime.avg
> 20722680 -24.9% 15569530 sched_debug.cfs_rq:/.avg_vruntime.max
> 17634233 -22.5% 13663168 sched_debug.cfs_rq:/.avg_vruntime.min
> 949063 2% -70.5% 280388 sched_debug.cfs_rq:/.avg_vruntime.stddev
> 0.78 10% -100.0% 0.00 sched_debug.cfs_rq:/.h_nr_running.min
> 0.16 8% +113.3% 0.33 2% sched_debug.cfs_rq:/.h_nr_running.stddev
> 0.56 141% +2.2e+07% 122016 52% sched_debug.cfs_rq:/.left_vruntime.avg
> 45.01 141% +2.2e+07% 10035976 28% sched_debug.cfs_rq:/.left_vruntime.max
> 4.58 141% +2.3e+07% 1072762 36% sched_debug.cfs_rq:/.left_vruntime.stddev
> 5814 10% -100.0% 0.00 sched_debug.cfs_rq:/.load.min
> 5.39 9% -73.2% 1.44 10% sched_debug.cfs_rq:/.load_avg.min
> 19248627 -22.1% 14989905 sched_debug.cfs_rq:/.min_vruntime.avg
> 20722680 -24.9% 15569530 sched_debug.cfs_rq:/.min_vruntime.max
> 17634233 -22.5% 13663168 sched_debug.cfs_rq:/.min_vruntime.min
> 949063 2% -70.5% 280388 sched_debug.cfs_rq:/.min_vruntime.stddev
> 0.78 10% -100.0% 0.00 sched_debug.cfs_rq:/.nr_running.min
> 0.06 8% +369.2% 0.30 3% sched_debug.cfs_rq:/.nr_running.stddev
> 4.84 26% +1611.3% 82.79 67% sched_debug.cfs_rq:/.removed.load_avg.avg
> 27.92 12% +3040.3% 876.79 68% sched_debug.cfs_rq:/.removed.load_avg.stddev
> 0.56 141% +2.2e+07% 122016 52% sched_debug.cfs_rq:/.right_vruntime.avg
> 45.06 141% +2.2e+07% 10035976 28% sched_debug.cfs_rq:/.right_vruntime.max
> 4.59 141% +2.3e+07% 1072762 36% sched_debug.cfs_rq:/.right_vruntime.stddev
> 900.25 -10.4% 806.45 sched_debug.cfs_rq:/.runnable_avg.avg
> 533.28 4% -87.0% 69.56 39% sched_debug.cfs_rq:/.runnable_avg.min
> 122.77 2% +92.9% 236.86 sched_debug.cfs_rq:/.runnable_avg.stddev
> 896.13 -10.8% 799.44 sched_debug.cfs_rq:/.util_avg.avg
> 379.06 4% -83.4% 62.94 37% sched_debug.cfs_rq:/.util_avg.min
> 116.35 8% +99.4% 232.04 sched_debug.cfs_rq:/.util_avg.stddev
> 550.87 -14.2% 472.66 2% sched_debug.cfs_rq:/.util_est_enqueued.avg
> 1124 8% +18.2% 1329 3% sched_debug.cfs_rq:/.util_est_enqueued.max
> 134.17 30% -100.0% 0.00 sched_debug.cfs_rq:/.util_est_enqueued.min
> 558243 6% -66.9% 184666 sched_debug.cpu.avg_idle.avg
> 12860 11% -56.1% 5644 sched_debug.cpu.avg_idle.min
> 365635 -53.5% 169863 5% sched_debug.cpu.avg_idle.stddev
> 9.56 3% -28.4% 6.84 8% sched_debug.cpu.clock.stddev
> 6999 2% -85.6% 1007 3% sched_debug.cpu.clock_task.stddev
> 3985 10% -100.0% 0.00 sched_debug.cpu.curr->pid.min
> 491.71 10% +209.3% 1520 4% sched_debug.cpu.curr->pid.stddev
> 270.19 141% +1096.6% 3233 51% sched_debug.cpu.max_idle_balance_cost.stddev
> 0.78 10% -100.0% 0.00 sched_debug.cpu.nr_running.min
> 0.15 6% +121.7% 0.34 2% sched_debug.cpu.nr_running.stddev
> 62041 15% +4280.9% 2717948 sched_debug.cpu.nr_switches.avg
> 1074922 14% +292.6% 4220307 2% sched_debug.cpu.nr_switches.max
> 1186 2% +1.2e+05% 1379073 4% sched_debug.cpu.nr_switches.min
> 132392 21% +294.6% 522476 5% sched_debug.cpu.nr_switches.stddev
> 6.44 4% +21.4% 7.82 12% sched_debug.cpu.nr_uninterruptible.stddev
> 6.73 13% -84.8% 1.02 5% perf-stat.i.MPKI
> 1.652e+10 2% -22.2% 1.285e+10 perf-stat.i.branch-instructions
> 0.72 +0.0 0.75 perf-stat.i.branch-miss-rate%
> 1.19e+08 3% -19.8% 95493630 perf-stat.i.branch-misses
> 27.46 12% -26.2 1.30 4% perf-stat.i.cache-miss-rate%
> 5.943e+08 10% -88.6% 67756219 5% perf-stat.i.cache-misses
> 2.201e+09 +143.7% 5.364e+09 perf-stat.i.cache-references
> 48911 19% +4695.4% 2345525 perf-stat.i.context-switches
> 3.66 2% +28.5% 4.71 perf-stat.i.cpi
> 3.228e+11 -4.1% 3.097e+11 perf-stat.i.cpu-cycles
> 190.51 +1363.7% 2788 10% perf-stat.i.cpu-migrations
> 803.99 6% +510.2% 4905 5% perf-stat.i.cycles-between-cache-misses
> 0.00 16% +0.0 0.01 14% perf-stat.i.dTLB-load-miss-rate%
> 755654 18% +232.4% 2512024 14% perf-stat.i.dTLB-load-misses
> 2.385e+10 2% -26.9% 1.742e+10 perf-stat.i.dTLB-loads
> 0.00 31% +0.0 0.01 35% perf-stat.i.dTLB-store-miss-rate%
> 305657 36% +200.0% 916822 35% perf-stat.i.dTLB-store-misses
> 1.288e+10 2% -28.8% 9.179e+09 perf-stat.i.dTLB-stores
> 8.789e+10 2% -25.2% 6.578e+10 perf-stat.i.instructions
> 0.28 2% -21.6% 0.22 perf-stat.i.ipc
> 2.52 -4.1% 2.42 perf-stat.i.metric.GHz
> 873.89 12% -67.0% 288.04 8% perf-stat.i.metric.K/sec
> 435.61 2% -19.6% 350.06 perf-stat.i.metric.M/sec
> 2799 +29.9% 3637 2% perf-stat.i.minor-faults
> 99.74 -2.6 97.11 perf-stat.i.node-load-miss-rate%
> 1.294e+08 12% -92.4% 9879207 7% perf-stat.i.node-load-misses
> 76.55 +16.4 92.92 perf-stat.i.node-store-miss-rate%
> 2.257e+08 10% -90.4% 21721672 8% perf-stat.i.node-store-misses
> 69217511 13% -97.7% 1625810 7% perf-stat.i.node-stores
> 2799 +29.9% 3637 2% perf-stat.i.page-faults
> 6.79 13% -84.9% 1.03 5% perf-stat.overall.MPKI
> 0.72 +0.0 0.74 perf-stat.overall.branch-miss-rate%
> 27.06 12% -25.8 1.26 4% perf-stat.overall.cache-miss-rate%
> 3.68 2% +28.1% 4.71 perf-stat.overall.cpi
> 549.38 10% +736.0% 4592 5% perf-stat.overall.cycles-between-cache-misses
> 0.00 18% +0.0 0.01 14% perf-stat.overall.dTLB-load-miss-rate%
> 0.00 36% +0.0 0.01 35% perf-stat.overall.dTLB-store-miss-rate%
> 0.27 2% -22.0% 0.21 perf-stat.overall.ipc
> 99.80 -2.4 97.37 perf-stat.overall.node-load-miss-rate%
> 76.60 +16.4 93.03 perf-stat.overall.node-store-miss-rate%
> 9319 +5.8% 9855 perf-stat.overall.path-length
> 1.646e+10 2% -22.2% 1.281e+10 perf-stat.ps.branch-instructions
> 1.186e+08 3% -19.8% 95167897 perf-stat.ps.branch-misses
> 5.924e+08 10% -88.6% 67384354 5% perf-stat.ps.cache-misses
> 2.193e+09 +143.4% 5.339e+09 perf-stat.ps.cache-references
> 49100 19% +4668.0% 2341074 perf-stat.ps.context-switches
> 3.218e+11 -4.1% 3.087e+11 perf-stat.ps.cpu-cycles
> 189.73 +1368.4% 2786 10% perf-stat.ps.cpu-migrations
> 753056 18% +229.9% 2484575 14% perf-stat.ps.dTLB-load-misses
> 2.377e+10 2% -26.9% 1.737e+10 perf-stat.ps.dTLB-loads
> 304509 36% +199.1% 910856 35% perf-stat.ps.dTLB-store-misses
> 1.284e+10 2% -28.7% 9.152e+09 perf-stat.ps.dTLB-stores
> 8.76e+10 2% -25.2% 6.557e+10 perf-stat.ps.instructions
> 2791 +28.2% 3580 2% perf-stat.ps.minor-faults
> 1.29e+08 12% -92.4% 9815672 7% perf-stat.ps.node-load-misses
> 2.25e+08 10% -90.4% 21575943 8% perf-stat.ps.node-store-misses
> 69002373 13% -97.7% 1615410 7% perf-stat.ps.node-stores
> 2791 +28.2% 3580 2% perf-stat.ps.page-faults
> 2.68e+13 2% -26.1% 1.981e+13 perf-stat.total.instructions
> 0.00 35% +2600.0% 0.04 23% perf-sched.sch_delay.avg.ms.__cond_resched.__skb_datagram_iter.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg
> 1.18 9% -98.1% 0.02 32% perf-sched.sch_delay.avg.ms.__cond_resched.stop_one_cpu.sched_exec.bprm_execve.part
> 0.58 3% -62.1% 0.22 97% perf-sched.sch_delay.avg.ms.__x64_sys_pause.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
> 0.51 22% -82.7% 0.09 11% perf-sched.sch_delay.avg.ms.do_task_dead.do_exit.do_group_exit.__x64_sys_exit_group.do_syscall_64
> 0.25 23% -59.6% 0.10 10% perf-sched.sch_delay.avg.ms.do_wait.kernel_wait4.__do_sys_wait4.do_syscall_64
> 0.03 42% -64.0% 0.01 15% perf-sched.sch_delay.avg.ms.pipe_read.vfs_read.ksys_read.do_syscall_64
> 0.04 7% +434.6% 0.23 36% perf-sched.sch_delay.avg.ms.schedule_hrtimeout_range_clock.do_poll.constprop.0.do_sys_poll
> 1.00 20% -84.1% 0.16 78% perf-sched.sch_delay.avg.ms.schedule_hrtimeout_range_clock.do_select.core_sys_select.kern_select
> 0.01 7% -70.0% 0.00 perf-sched.sch_delay.avg.ms.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
> 0.02 2% +533.9% 0.12 43% perf-sched.sch_delay.avg.ms.schedule_timeout.kcompactd.kthread.ret_from_fork
> 0.03 7% +105.9% 0.06 33% perf-sched.sch_delay.avg.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
> 0.01 15% +67.5% 0.02 8% perf-sched.sch_delay.avg.ms.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
> 0.09 50% -85.7% 0.01 33% perf-sched.sch_delay.avg.ms.wait_for_partner.fifo_open.do_dentry_open.do_open
> 0.04 7% +343.4% 0.16 6% perf-sched.sch_delay.avg.ms.worker_thread.kthread.ret_from_fork.ret_from_fork_asm
> 0.06 41% +3260.7% 1.88 30% perf-sched.sch_delay.max.ms.__cond_resched.__skb_datagram_iter.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg
> 3.78 -96.2% 0.14 3% perf-sched.sch_delay.max.ms.__cond_resched.stop_one_cpu.sched_exec.bprm_execve.part
> 2.86 4% -72.6% 0.78 113% perf-sched.sch_delay.max.ms.__x64_sys_pause.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown]
> 4.09 7% -34.1% 2.69 7% perf-sched.sch_delay.max.ms.do_task_dead.do_exit.do_group_exit.__x64_sys_exit_group.do_syscall_64
> 3.09 37% -64.1% 1.11 5% perf-sched.sch_delay.max.ms.do_wait.kernel_wait4.__do_sys_wait4.do_syscall_64
> 0.00 141% +6200.0% 0.13 82% perf-sched.sch_delay.max.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt
> 3.94 -40.5% 2.35 48% perf-sched.sch_delay.max.ms.pipe_read.vfs_read.ksys_read.do_syscall_64
> 1.63 21% -77.0% 0.38 90% perf-sched.sch_delay.max.ms.schedule_hrtimeout_range_clock.do_select.core_sys_select.kern_select
> 7.29 39% +417.5% 37.72 16% perf-sched.sch_delay.max.ms.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
> 3.35 14% -51.7% 1.62 3% perf-sched.sch_delay.max.ms.schedule_timeout.__wait_for_common.wait_for_completion_state.kernel_clone
> 0.05 13% +2245.1% 1.13 40% perf-sched.sch_delay.max.ms.schedule_timeout.kcompactd.kthread.ret_from_fork
> 3.01 26% +729.6% 25.01 91% perf-sched.sch_delay.max.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
> 1.93 59% -85.5% 0.28 62% perf-sched.sch_delay.max.ms.wait_for_partner.fifo_open.do_dentry_open.do_open
> 0.01 -50.0% 0.00 perf-sched.total_sch_delay.average.ms
> 7.29 39% +468.8% 41.46 26% perf-sched.total_sch_delay.max.ms
> 6.04 4% -94.1% 0.35 perf-sched.total_wait_and_delay.average.ms
> 205790 3% +1811.0% 3932742 perf-sched.total_wait_and_delay.count.ms
> 6.03 4% -94.2% 0.35 perf-sched.total_wait_time.average.ms
> 75.51 41% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write
> 23.01 17% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.__cond_resched.mutex_lock.perf_poll.do_poll.constprop
> 23.82 7% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
> 95.27 41% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.__cond_resched.shmem_inode_acct_block.shmem_alloc_and_acct_folio.shmem_get_folio_gfp.shmem_write_begin
> 55.86 141% +1014.6% 622.64 5% perf-sched.wait_and_delay.avg.ms.do_nanosleep.hrtimer_nanosleep.common_nsleep.__x64_sys_clock_nanosleep
> 0.07 23% -82.5% 0.01 perf-sched.wait_and_delay.avg.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64
> 137.41 3% +345.1% 611.63 2% perf-sched.wait_and_delay.avg.ms.schedule_hrtimeout_range_clock.do_poll.constprop.0.do_sys_poll
> 0.04 5% -49.6% 0.02 perf-sched.wait_and_delay.avg.ms.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
> 536.33 5% -46.5% 287.00 perf-sched.wait_and_delay.avg.ms.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
> 21.67 32% -100.0% 0.00 perf-sched.wait_and_delay.count.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write
> 5.67 8% -100.0% 0.00 perf-sched.wait_and_delay.count.__cond_resched.mutex_lock.perf_poll.do_poll.constprop
> 1.67 56% -100.0% 0.00 perf-sched.wait_and_delay.count.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
> 5.67 29% -100.0% 0.00 perf-sched.wait_and_delay.count.__cond_resched.shmem_inode_acct_block.shmem_alloc_and_acct_folio.shmem_get_folio_gfp.shmem_write_begin
> 5.33 23% +93.8% 10.33 25% perf-sched.wait_and_delay.count.__cond_resched.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
> 101725 3% +15.3% 117243 10% perf-sched.wait_and_delay.count.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64
> 100.00 7% -80.3% 19.67 2% perf-sched.wait_and_delay.count.schedule_hrtimeout_range_clock.do_poll.constprop.0.do_sys_poll
> 97762 4% +3794.8% 3807606 perf-sched.wait_and_delay.count.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
> 1091 9% +111.9% 2311 3% perf-sched.wait_and_delay.count.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
> 604.50 43% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write
> 37.41 9% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.__cond_resched.mutex_lock.perf_poll.do_poll.constprop
> 27.08 13% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
> 275.41 32% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.__cond_resched.shmem_inode_acct_block.shmem_alloc_and_acct_folio.shmem_get_folio_gfp.shmem_write_begin
> 1313 69% +112.1% 2786 15% perf-sched.wait_and_delay.max.ms.__cond_resched.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
> 333.38 141% +200.4% 1001 perf-sched.wait_and_delay.max.ms.do_nanosleep.hrtimer_nanosleep.common_nsleep.__x64_sys_clock_nanosleep
> 1000 -96.8% 31.85 48% perf-sched.wait_and_delay.max.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64
> 17.99 33% +387.5% 87.71 8% perf-sched.wait_and_delay.max.ms.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
> 0.33 19% -74.1% 0.09 10% perf-sched.wait_time.avg.ms.__cond_resched.__skb_datagram_iter.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg
> 0.02 53% +331.4% 0.10 50% perf-sched.wait_time.avg.ms.__cond_resched.aa_sk_perm.security_socket_recvmsg.sock_recvmsg.__sys_recvfrom
> 0.09 65% -75.9% 0.02 9% perf-sched.wait_time.avg.ms.__cond_resched.aa_sk_perm.security_socket_sendmsg.sock_sendmsg.__sys_sendto
> 0.02 22% -70.2% 0.01 141% perf-sched.wait_time.avg.ms.__cond_resched.dput.__fput.__x64_sys_close.do_syscall_64
> 75.51 41% -100.0% 0.04 42% perf-sched.wait_time.avg.ms.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write
> 0.10 36% -80.3% 0.02 9% perf-sched.wait_time.avg.ms.__cond_resched.kmem_cache_alloc_node.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb
> 0.55 61% -94.9% 0.03 45% perf-sched.wait_time.avg.ms.__cond_resched.kmem_cache_alloc_node.kmalloc_reserve.__alloc_skb.alloc_skb_with_frags
> 23.01 17% -100.0% 0.00 141% perf-sched.wait_time.avg.ms.__cond_resched.mutex_lock.perf_poll.do_poll.constprop
> 23.82 7% -99.7% 0.07 57% perf-sched.wait_time.avg.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
> 95.27 41% -100.0% 0.03 89% perf-sched.wait_time.avg.ms.__cond_resched.shmem_inode_acct_block.shmem_alloc_and_acct_folio.shmem_get_folio_gfp.shmem_write_begin
> 56.30 139% +1005.5% 622.44 5% perf-sched.wait_time.avg.ms.do_nanosleep.hrtimer_nanosleep.common_nsleep.__x64_sys_clock_nanosleep
> 2.78 66% -98.2% 0.05 52% perf-sched.wait_time.avg.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt
> 0.07 23% -82.5% 0.01 perf-sched.wait_time.avg.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64
> 137.37 3% +345.1% 611.40 2% perf-sched.wait_time.avg.ms.schedule_hrtimeout_range_clock.do_poll.constprop.0.do_sys_poll
> 0.02 5% -41.9% 0.01 3% perf-sched.wait_time.avg.ms.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
> 536.32 5% -46.5% 286.98 perf-sched.wait_time.avg.ms.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
> 4.66 20% -56.7% 2.02 26% perf-sched.wait_time.max.ms.__cond_resched.__skb_datagram_iter.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg
> 0.03 63% +995.0% 0.37 26% perf-sched.wait_time.max.ms.__cond_resched.aa_sk_perm.security_socket_recvmsg.sock_recvmsg.__sys_recvfrom
> 1.67 87% -92.6% 0.12 57% perf-sched.wait_time.max.ms.__cond_resched.aa_sk_perm.security_socket_sendmsg.sock_sendmsg.__sys_sendto
> 0.54 117% -95.1% 0.03 105% perf-sched.wait_time.max.ms.__cond_resched.down_write_killable.exec_mmap.begin_new_exec.load_elf_binary
> 0.06 49% -89.1% 0.01 141% perf-sched.wait_time.max.ms.__cond_resched.dput.__fput.__x64_sys_close.do_syscall_64
> 604.50 43% -100.0% 0.16 83% perf-sched.wait_time.max.ms.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write
> 2.77 45% -95.4% 0.13 64% perf-sched.wait_time.max.ms.__cond_resched.kmem_cache_alloc_node.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb
> 2.86 45% -94.3% 0.16 91% perf-sched.wait_time.max.ms.__cond_resched.kmem_cache_alloc_node.kmalloc_reserve.__alloc_skb.alloc_skb_with_frags
> 37.41 9% -100.0% 0.01 141% perf-sched.wait_time.max.ms.__cond_resched.mutex_lock.perf_poll.do_poll.constprop
> 27.08 13% -99.7% 0.08 61% perf-sched.wait_time.max.ms.__cond_resched.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter
> 275.41 32% -100.0% 0.03 89% perf-sched.wait_time.max.ms.__cond_resched.shmem_inode_acct_block.shmem_alloc_and_acct_folio.shmem_get_folio_gfp.shmem_write_begin
> 1313 69% +112.1% 2786 15% perf-sched.wait_time.max.ms.__cond_resched.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm
> 334.74 140% +198.9% 1000 perf-sched.wait_time.max.ms.do_nanosleep.hrtimer_nanosleep.common_nsleep.__x64_sys_clock_nanosleep
> 21.74 58% -95.4% 1.00 103% perf-sched.wait_time.max.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.irqentry_exit_to_user_mode.asm_sysvec_apic_timer_interrupt
> 1000 -97.6% 24.49 50% perf-sched.wait_time.max.ms.exit_to_user_mode_loop.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64
> 10.90 27% +682.9% 85.36 6% perf-sched.wait_time.max.ms.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
> 32.91 58% -63.5% 12.01 115% perf-sched.wait_time.max.ms.schedule_timeout.__wait_for_common.wait_for_completion_state.kernel_clone
> 169.97 7% -49.2% 86.29 15% perf-sched.wait_time.max.ms.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread
> 44.08 -19.8 24.25 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.free_pcppages_bulk.free_unref_page.skb_release_data.__consume_stateless_skb
> 44.47 -19.6 24.87 perf-profile.calltrace.cycles-pp.free_pcppages_bulk.free_unref_page.skb_release_data.__consume_stateless_skb.udp_recvmsg
> 43.63 -19.5 24.15 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.free_pcppages_bulk.free_unref_page.skb_release_data
> 45.62 -19.2 26.39 perf-profile.calltrace.cycles-pp.skb_release_data.__consume_stateless_skb.udp_recvmsg.inet_recvmsg.sock_recvmsg
> 45.62 -19.2 26.40 perf-profile.calltrace.cycles-pp.__consume_stateless_skb.udp_recvmsg.inet_recvmsg.sock_recvmsg.__sys_recvfrom
> 45.00 -19.1 25.94 perf-profile.calltrace.cycles-pp.free_unref_page.skb_release_data.__consume_stateless_skb.udp_recvmsg.inet_recvmsg
> 50.41 -16.8 33.64 39% perf-profile.calltrace.cycles-pp.accept_connections.main.__libc_start_main
> 50.41 -16.8 33.64 39% perf-profile.calltrace.cycles-pp.accept_connection.accept_connections.main.__libc_start_main
> 50.41 -16.8 33.64 39% perf-profile.calltrace.cycles-pp.spawn_child.accept_connection.accept_connections.main.__libc_start_main
> 50.41 -16.8 33.64 39% perf-profile.calltrace.cycles-pp.process_requests.spawn_child.accept_connection.accept_connections.main
> 99.92 -14.2 85.72 15% perf-profile.calltrace.cycles-pp.main.__libc_start_main
> 99.96 -14.2 85.77 15% perf-profile.calltrace.cycles-pp.__libc_start_main
> 50.10 -8.6 41.52 perf-profile.calltrace.cycles-pp.udp_recvmsg.inet_recvmsg.sock_recvmsg.__sys_recvfrom.__x64_sys_recvfrom
> 50.11 -8.6 41.55 perf-profile.calltrace.cycles-pp.inet_recvmsg.sock_recvmsg.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64
> 50.13 -8.5 41.64 perf-profile.calltrace.cycles-pp.sock_recvmsg.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 50.28 -8.0 42.27 perf-profile.calltrace.cycles-pp.__sys_recvfrom.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe.recvfrom
> 50.29 -8.0 42.29 perf-profile.calltrace.cycles-pp.__x64_sys_recvfrom.do_syscall_64.entry_SYSCALL_64_after_hwframe.recvfrom.recv_omni
> 50.31 -7.9 42.42 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.recvfrom.recv_omni.process_requests
> 50.32 -7.8 42.47 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.recvfrom.recv_omni.process_requests.spawn_child
> 50.36 -7.6 42.78 perf-profile.calltrace.cycles-pp.recvfrom.recv_omni.process_requests.spawn_child.accept_connection
> 50.41 -7.3 43.07 perf-profile.calltrace.cycles-pp.recv_omni.process_requests.spawn_child.accept_connection.accept_connections
> 19.93 2% -6.6 13.36 perf-profile.calltrace.cycles-pp.ip_generic_getfrag.__ip_append_data.ip_make_skb.udp_sendmsg.sock_sendmsg
> 19.44 2% -6.3 13.16 perf-profile.calltrace.cycles-pp._copy_from_iter.ip_generic_getfrag.__ip_append_data.ip_make_skb.udp_sendmsg
> 18.99 2% -6.1 12.90 perf-profile.calltrace.cycles-pp.copyin._copy_from_iter.ip_generic_getfrag.__ip_append_data.ip_make_skb
> 8.95 -5.1 3.82 perf-profile.calltrace.cycles-pp.udp_send_skb.udp_sendmsg.sock_sendmsg.__sys_sendto.__x64_sys_sendto
> 8.70 -5.0 3.71 perf-profile.calltrace.cycles-pp.ip_send_skb.udp_send_skb.udp_sendmsg.sock_sendmsg.__sys_sendto
> 8.10 -4.6 3.45 perf-profile.calltrace.cycles-pp.ip_finish_output2.ip_send_skb.udp_send_skb.udp_sendmsg.sock_sendmsg
> 7.69 -4.4 3.27 perf-profile.calltrace.cycles-pp.__dev_queue_xmit.ip_finish_output2.ip_send_skb.udp_send_skb.udp_sendmsg
> 6.51 -3.7 2.78 perf-profile.calltrace.cycles-pp.__local_bh_enable_ip.__dev_queue_xmit.ip_finish_output2.ip_send_skb.udp_send_skb
> 6.47 -3.7 2.75 perf-profile.calltrace.cycles-pp.do_softirq.__local_bh_enable_ip.__dev_queue_xmit.ip_finish_output2.ip_send_skb
> 6.41 -3.7 2.71 perf-profile.calltrace.cycles-pp.__do_softirq.do_softirq.__local_bh_enable_ip.__dev_queue_xmit.ip_finish_output2
> 5.88 -3.5 2.43 perf-profile.calltrace.cycles-pp.net_rx_action.__do_softirq.do_softirq.__local_bh_enable_ip.__dev_queue_xmit
> 5.73 -3.4 2.35 perf-profile.calltrace.cycles-pp.__napi_poll.net_rx_action.__do_softirq.do_softirq.__local_bh_enable_ip
> 5.69 -3.4 2.33 perf-profile.calltrace.cycles-pp.process_backlog.__napi_poll.net_rx_action.__do_softirq.do_softirq
> 5.36 -3.2 2.19 perf-profile.calltrace.cycles-pp.__netif_receive_skb_one_core.process_backlog.__napi_poll.net_rx_action.__do_softirq
> 4.59 -2.7 1.89 perf-profile.calltrace.cycles-pp.ip_local_deliver_finish.__netif_receive_skb_one_core.process_backlog.__napi_poll.net_rx_action
> 4.55 2% -2.7 1.88 perf-profile.calltrace.cycles-pp.ip_protocol_deliver_rcu.ip_local_deliver_finish.__netif_receive_skb_one_core.process_backlog.__napi_poll
> 4.40 2% -2.6 1.81 perf-profile.calltrace.cycles-pp.__udp4_lib_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish.__netif_receive_skb_one_core.process_backlog
> 3.81 2% -2.2 1.57 perf-profile.calltrace.cycles-pp.udp_unicast_rcv_skb.__udp4_lib_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish.__netif_receive_skb_one_core
> 3.75 2% -2.2 1.55 perf-profile.calltrace.cycles-pp.udp_queue_rcv_one_skb.udp_unicast_rcv_skb.__udp4_lib_rcv.ip_protocol_deliver_rcu.ip_local_deliver_finish
> 2.21 2% -1.6 0.63 perf-profile.calltrace.cycles-pp.__ip_make_skb.ip_make_skb.udp_sendmsg.sock_sendmsg.__sys_sendto
> 1.94 2% -1.4 0.51 2% perf-profile.calltrace.cycles-pp.__ip_select_ident.__ip_make_skb.ip_make_skb.udp_sendmsg.sock_sendmsg
> 1.14 -0.6 0.51 perf-profile.calltrace.cycles-pp.sock_alloc_send_pskb.__ip_append_data.ip_make_skb.udp_sendmsg.sock_sendmsg
> 0.00 +0.5 0.53 2% perf-profile.calltrace.cycles-pp.schedule_idle.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
> 0.00 +0.7 0.69 perf-profile.calltrace.cycles-pp.sysvec_call_function_single.asm_sysvec_call_function_single.acpi_safe_halt.acpi_idle_enter.cpuidle_enter_state
> 0.00 +0.7 0.71 perf-profile.calltrace.cycles-pp.__sk_mem_raise_allocated.__sk_mem_schedule.__udp_enqueue_schedule_skb.udp_queue_rcv_one_skb.udp_unicast_rcv_skb
> 0.00 +0.7 0.72 perf-profile.calltrace.cycles-pp.__sk_mem_schedule.__udp_enqueue_schedule_skb.udp_queue_rcv_one_skb.udp_unicast_rcv_skb.__udp4_lib_rcv
> 0.00 +1.0 0.99 20% perf-profile.calltrace.cycles-pp.__schedule.schedule.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp
> 0.00 +1.0 1.01 20% perf-profile.calltrace.cycles-pp.schedule.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg
> 0.00 +1.1 1.05 20% perf-profile.calltrace.cycles-pp.schedule_timeout.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg.inet_recvmsg
> 0.00 +1.1 1.12 perf-profile.calltrace.cycles-pp.acpi_safe_halt.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call
> 0.00 +1.2 1.18 20% perf-profile.calltrace.cycles-pp.__skb_wait_for_more_packets.__skb_recv_udp.udp_recvmsg.inet_recvmsg.sock_recvmsg
> 0.00 +1.3 1.32 perf-profile.calltrace.cycles-pp.__udp_enqueue_schedule_skb.udp_queue_rcv_one_skb.udp_unicast_rcv_skb.__udp4_lib_rcv.ip_protocol_deliver_rcu
> 0.00 +2.2 2.23 perf-profile.calltrace.cycles-pp.__skb_recv_udp.udp_recvmsg.inet_recvmsg.sock_recvmsg.__sys_recvfrom
> 49.51 +2.6 52.08 perf-profile.calltrace.cycles-pp.send_udp_stream.main.__libc_start_main
> 49.49 +2.6 52.07 perf-profile.calltrace.cycles-pp.send_omni_inner.send_udp_stream.main.__libc_start_main
> 0.00 +3.0 2.96 2% perf-profile.calltrace.cycles-pp.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle
> 48.71 +3.0 51.73 perf-profile.calltrace.cycles-pp.sendto.send_omni_inner.send_udp_stream.main.__libc_start_main
> 0.00 +3.1 3.06 2% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry
> 0.00 +3.1 3.09 perf-profile.calltrace.cycles-pp.cpuidle_enter.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary
> 48.34 +3.2 51.56 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.sendto.send_omni_inner.send_udp_stream.main
> 0.00 +3.3 3.33 2% perf-profile.calltrace.cycles-pp.cpuidle_idle_call.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
> 48.13 +3.8 51.96 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.sendto.send_omni_inner.send_udp_stream
> 47.82 +4.0 51.82 perf-profile.calltrace.cycles-pp.__x64_sys_sendto.do_syscall_64.entry_SYSCALL_64_after_hwframe.sendto.send_omni_inner
> 47.70 +4.1 51.76 perf-profile.calltrace.cycles-pp.__sys_sendto.__x64_sys_sendto.do_syscall_64.entry_SYSCALL_64_after_hwframe.sendto
> 0.00 +4.1 4.08 perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
> 0.00 +4.1 4.10 perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
> 0.00 +4.1 4.10 perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64_no_verify
> 0.00 +4.1 4.14 perf-profile.calltrace.cycles-pp.secondary_startup_64_no_verify
> 0.00 +4.3 4.35 2% perf-profile.calltrace.cycles-pp.asm_sysvec_call_function_single.acpi_safe_halt.acpi_idle_enter.cpuidle_enter_state.cpuidle_enter
> 46.52 +4.8 51.27 perf-profile.calltrace.cycles-pp.sock_sendmsg.__sys_sendto.__x64_sys_sendto.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 46.04 +5.0 51.08 perf-profile.calltrace.cycles-pp.udp_sendmsg.sock_sendmsg.__sys_sendto.__x64_sys_sendto.do_syscall_64
> 3.67 +8.0 11.63 perf-profile.calltrace.cycles-pp.copyout._copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.udp_recvmsg
> 3.71 +8.1 11.80 perf-profile.calltrace.cycles-pp._copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg
> 3.96 +8.5 12.42 perf-profile.calltrace.cycles-pp.__skb_datagram_iter.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg.sock_recvmsg
> 3.96 +8.5 12.44 perf-profile.calltrace.cycles-pp.skb_copy_datagram_iter.udp_recvmsg.inet_recvmsg.sock_recvmsg.__sys_recvfrom
> 35.13 +11.3 46.39 perf-profile.calltrace.cycles-pp.ip_make_skb.udp_sendmsg.sock_sendmsg.__sys_sendto.__x64_sys_sendto
> 32.68 2% +13.0 45.65 perf-profile.calltrace.cycles-pp.__ip_append_data.ip_make_skb.udp_sendmsg.sock_sendmsg.__sys_sendto
> 10.27 +20.3 30.59 perf-profile.calltrace.cycles-pp.sk_page_frag_refill.__ip_append_data.ip_make_skb.udp_sendmsg.sock_sendmsg
> 10.24 +20.3 30.58 perf-profile.calltrace.cycles-pp.skb_page_frag_refill.sk_page_frag_refill.__ip_append_data.ip_make_skb.udp_sendmsg
> 9.84 +20.5 30.32 perf-profile.calltrace.cycles-pp.__alloc_pages.skb_page_frag_refill.sk_page_frag_refill.__ip_append_data.ip_make_skb
> 9.59 +20.5 30.11 perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_pages.skb_page_frag_refill.sk_page_frag_refill.__ip_append_data
> 8.40 +21.0 29.42 perf-profile.calltrace.cycles-pp.rmqueue.get_page_from_freelist.__alloc_pages.skb_page_frag_refill.sk_page_frag_refill
> 6.13 +21.9 28.05 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.rmqueue_bulk.rmqueue.get_page_from_freelist
> 6.20 +22.0 28.15 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.rmqueue_bulk.rmqueue.get_page_from_freelist.__alloc_pages
> 6.46 +22.5 28.91 perf-profile.calltrace.cycles-pp.rmqueue_bulk.rmqueue.get_page_from_freelist.__alloc_pages.skb_page_frag_refill
> 48.24 -21.8 26.43 perf-profile.children.cycles-pp.skb_release_data
> 47.19 -21.2 25.98 perf-profile.children.cycles-pp.free_unref_page
> 44.48 -19.6 24.88 perf-profile.children.cycles-pp.free_pcppages_bulk
> 45.62 -19.2 26.40 perf-profile.children.cycles-pp.__consume_stateless_skb
> 99.95 -14.2 85.76 15% perf-profile.children.cycles-pp.main
> 99.96 -14.2 85.77 15% perf-profile.children.cycles-pp.__libc_start_main
> 50.10 -8.6 41.53 perf-profile.children.cycles-pp.udp_recvmsg
> 50.11 -8.6 41.56 perf-profile.children.cycles-pp.inet_recvmsg
> 50.13 -8.5 41.65 perf-profile.children.cycles-pp.sock_recvmsg
> 50.29 -8.0 42.28 perf-profile.children.cycles-pp.__sys_recvfrom
> 50.29 -8.0 42.30 perf-profile.children.cycles-pp.__x64_sys_recvfrom
> 50.38 -7.5 42.86 perf-profile.children.cycles-pp.recvfrom
> 50.41 -7.3 43.07 perf-profile.children.cycles-pp.accept_connections
> 50.41 -7.3 43.07 perf-profile.children.cycles-pp.accept_connection
> 50.41 -7.3 43.07 perf-profile.children.cycles-pp.spawn_child
> 50.41 -7.3 43.07 perf-profile.children.cycles-pp.process_requests
> 50.41 -7.3 43.07 perf-profile.children.cycles-pp.recv_omni
> 19.96 2% -6.5 13.50 perf-profile.children.cycles-pp.ip_generic_getfrag
> 19.46 2% -6.2 13.28 perf-profile.children.cycles-pp._copy_from_iter
> 19.21 2% -6.1 13.14 perf-profile.children.cycles-pp.copyin
> 8.96 -5.1 3.86 perf-profile.children.cycles-pp.udp_send_skb
> 8.72 -5.0 3.75 perf-profile.children.cycles-pp.ip_send_skb
> 8.11 -4.6 3.49 perf-profile.children.cycles-pp.ip_finish_output2
> 7.72 -4.4 3.32 perf-profile.children.cycles-pp.__dev_queue_xmit
> 98.71 -4.1 94.59 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
> 98.51 -4.0 94.46 perf-profile.children.cycles-pp.do_syscall_64
> 6.49 -3.7 2.78 perf-profile.children.cycles-pp.do_softirq
> 6.51 -3.7 2.82 perf-profile.children.cycles-pp.__local_bh_enable_ip
> 6.43 -3.7 2.78 perf-profile.children.cycles-pp.__do_softirq
> 5.90 -3.4 2.46 perf-profile.children.cycles-pp.net_rx_action
> 5.74 -3.4 2.38 perf-profile.children.cycles-pp.__napi_poll
> 5.71 -3.4 2.36 perf-profile.children.cycles-pp.process_backlog
> 5.37 -3.2 2.21 perf-profile.children.cycles-pp.__netif_receive_skb_one_core
> 4.60 -2.7 1.91 perf-profile.children.cycles-pp.ip_local_deliver_finish
> 4.57 2% -2.7 1.90 perf-profile.children.cycles-pp.ip_protocol_deliver_rcu
> 4.42 2% -2.6 1.83 perf-profile.children.cycles-pp.__udp4_lib_rcv
> 3.82 2% -2.2 1.58 2% perf-profile.children.cycles-pp.udp_unicast_rcv_skb
> 3.78 2% -2.2 1.57 2% perf-profile.children.cycles-pp.udp_queue_rcv_one_skb
> 2.23 2% -1.6 0.65 2% perf-profile.children.cycles-pp.__ip_make_skb
> 1.95 2% -1.4 0.52 3% perf-profile.children.cycles-pp.__ip_select_ident
> 1.51 4% -1.2 0.34 perf-profile.children.cycles-pp.free_unref_page_commit
> 1.17 -0.7 0.51 2% perf-profile.children.cycles-pp.ip_route_output_flow
> 1.15 -0.6 0.52 perf-profile.children.cycles-pp.sock_alloc_send_pskb
> 0.91 -0.5 0.39 perf-profile.children.cycles-pp.alloc_skb_with_frags
> 0.86 -0.5 0.37 perf-profile.children.cycles-pp.__alloc_skb
> 0.83 -0.5 0.36 2% perf-profile.children.cycles-pp.ip_route_output_key_hash_rcu
> 0.75 -0.4 0.32 perf-profile.children.cycles-pp.dev_hard_start_xmit
> 0.72 -0.4 0.31 3% perf-profile.children.cycles-pp.fib_table_lookup
> 0.67 -0.4 0.28 perf-profile.children.cycles-pp.loopback_xmit
> 0.70 2% -0.4 0.33 perf-profile.children.cycles-pp.__zone_watermark_ok
> 0.47 4% -0.3 0.15 perf-profile.children.cycles-pp.kmem_cache_free
> 0.57 -0.3 0.26 perf-profile.children.cycles-pp.kmem_cache_alloc_node
> 0.46 -0.3 0.18 2% perf-profile.children.cycles-pp.ip_rcv
> 0.42 -0.3 0.17 perf-profile.children.cycles-pp.move_addr_to_kernel
> 0.41 -0.2 0.16 2% perf-profile.children.cycles-pp.__udp4_lib_lookup
> 0.32 -0.2 0.13 perf-profile.children.cycles-pp.__netif_rx
> 0.30 -0.2 0.12 perf-profile.children.cycles-pp.netif_rx_internal
> 0.30 -0.2 0.12 perf-profile.children.cycles-pp._copy_from_user
> 0.31 -0.2 0.13 perf-profile.children.cycles-pp.kmalloc_reserve
> 0.63 -0.2 0.46 2% perf-profile.children.cycles-pp.free_unref_page_prepare
> 0.28 -0.2 0.11 perf-profile.children.cycles-pp.enqueue_to_backlog
> 0.27 -0.2 0.11 perf-profile.children.cycles-pp.udp4_lib_lookup2
> 0.29 -0.2 0.13 6% perf-profile.children.cycles-pp.send_data
> 0.25 -0.2 0.10 perf-profile.children.cycles-pp.__netif_receive_skb_core
> 0.23 2% -0.1 0.10 4% perf-profile.children.cycles-pp.security_socket_sendmsg
> 0.19 2% -0.1 0.06 perf-profile.children.cycles-pp.ip_rcv_core
> 0.37 -0.1 0.24 perf-profile.children.cycles-pp.irqtime_account_irq
> 0.21 -0.1 0.08 perf-profile.children.cycles-pp.sock_wfree
> 0.21 3% -0.1 0.08 perf-profile.children.cycles-pp.validate_xmit_skb
> 0.20 2% -0.1 0.08 perf-profile.children.cycles-pp.ip_output
> 0.22 2% -0.1 0.10 4% perf-profile.children.cycles-pp.ip_rcv_finish_core
> 0.20 6% -0.1 0.09 5% perf-profile.children.cycles-pp.__mkroute_output
> 0.21 2% -0.1 0.09 5% perf-profile.children.cycles-pp._raw_spin_lock_irq
> 0.28 -0.1 0.18 perf-profile.children.cycles-pp._raw_spin_trylock
> 0.34 3% -0.1 0.25 perf-profile.children.cycles-pp.__slab_free
> 0.13 3% -0.1 0.05 perf-profile.children.cycles-pp.siphash_3u32
> 0.12 4% -0.1 0.03 70% perf-profile.children.cycles-pp.ipv4_pktinfo_prepare
> 0.14 3% -0.1 0.06 7% perf-profile.children.cycles-pp.__ip_local_out
> 0.20 2% -0.1 0.12 perf-profile.children.cycles-pp.aa_sk_perm
> 0.18 2% -0.1 0.10 perf-profile.children.cycles-pp.get_pfnblock_flags_mask
> 0.12 3% -0.1 0.05 perf-profile.children.cycles-pp.sk_filter_trim_cap
> 0.13 -0.1 0.06 perf-profile.children.cycles-pp.ip_setup_cork
> 0.13 7% -0.1 0.06 8% perf-profile.children.cycles-pp.fib_lookup_good_nhc
> 0.15 3% -0.1 0.08 5% perf-profile.children.cycles-pp.skb_set_owner_w
> 0.11 4% -0.1 0.05 perf-profile.children.cycles-pp.dst_release
> 0.23 2% -0.1 0.17 2% perf-profile.children.cycles-pp.__entry_text_start
> 0.11 -0.1 0.05 perf-profile.children.cycles-pp.ipv4_mtu
> 0.20 2% -0.1 0.15 3% perf-profile.children.cycles-pp.__list_add_valid_or_report
> 0.10 -0.1 0.05 perf-profile.children.cycles-pp.ip_send_check
> 0.31 2% -0.0 0.26 3% perf-profile.children.cycles-pp.sockfd_lookup_light
> 0.27 -0.0 0.22 2% perf-profile.children.cycles-pp.__fget_light
> 0.63 -0.0 0.58 perf-profile.children.cycles-pp.__check_object_size
> 0.15 3% -0.0 0.11 perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack
> 0.13 -0.0 0.09 5% perf-profile.children.cycles-pp.alloc_pages
> 0.27 -0.0 0.24 perf-profile.children.cycles-pp.sched_clock_cpu
> 0.11 4% -0.0 0.08 6% perf-profile.children.cycles-pp.__cond_resched
> 0.14 3% -0.0 0.11 perf-profile.children.cycles-pp.free_tail_page_prepare
> 0.11 -0.0 0.08 5% perf-profile.children.cycles-pp.syscall_return_via_sysret
> 0.09 9% -0.0 0.06 7% perf-profile.children.cycles-pp.__xfrm_policy_check2
> 0.23 2% -0.0 0.21 2% perf-profile.children.cycles-pp.sched_clock
> 0.14 3% -0.0 0.11 4% perf-profile.children.cycles-pp.prep_compound_page
> 0.21 2% -0.0 0.20 2% perf-profile.children.cycles-pp.native_sched_clock
> 0.06 -0.0 0.05 perf-profile.children.cycles-pp.task_tick_fair
> 0.06 -0.0 0.05 perf-profile.children.cycles-pp.check_stack_object
> 0.18 2% +0.0 0.20 2% perf-profile.children.cycles-pp.perf_event_task_tick
> 0.18 2% +0.0 0.19 2% perf-profile.children.cycles-pp.perf_adjust_freq_unthr_context
> 0.31 3% +0.0 0.33 perf-profile.children.cycles-pp.tick_sched_handle
> 0.31 3% +0.0 0.33 perf-profile.children.cycles-pp.update_process_times
> 0.41 2% +0.0 0.43 perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt
> 0.40 2% +0.0 0.42 perf-profile.children.cycles-pp.hrtimer_interrupt
> 0.32 2% +0.0 0.34 perf-profile.children.cycles-pp.tick_sched_timer
> 0.36 2% +0.0 0.39 perf-profile.children.cycles-pp.__hrtimer_run_queues
> 0.06 7% +0.0 0.10 4% perf-profile.children.cycles-pp.exit_to_user_mode_prepare
> 0.05 8% +0.0 0.10 perf-profile.children.cycles-pp._raw_spin_lock_bh
> 0.00 +0.1 0.05 perf-profile.children.cycles-pp.update_cfs_group
> 0.00 +0.1 0.05 perf-profile.children.cycles-pp.cpuidle_governor_latency_req
> 0.00 +0.1 0.05 perf-profile.children.cycles-pp.flush_smp_call_function_queue
> 0.00 +0.1 0.05 8% perf-profile.children.cycles-pp.prepare_to_wait_exclusive
> 0.07 +0.1 0.13 3% perf-profile.children.cycles-pp.__mod_zone_page_state
> 0.00 +0.1 0.06 13% perf-profile.children.cycles-pp.cgroup_rstat_updated
> 0.00 +0.1 0.06 perf-profile.children.cycles-pp.__x2apic_send_IPI_dest
> 0.00 +0.1 0.06 perf-profile.children.cycles-pp.security_socket_recvmsg
> 0.00 +0.1 0.06 perf-profile.children.cycles-pp.select_task_rq_fair
> 0.00 +0.1 0.06 perf-profile.children.cycles-pp.tick_irq_enter
> 0.00 +0.1 0.06 perf-profile.children.cycles-pp.tick_nohz_idle_enter
> 0.42 2% +0.1 0.49 2% perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt
> 0.00 +0.1 0.07 7% perf-profile.children.cycles-pp.ktime_get
> 0.00 +0.1 0.07 perf-profile.children.cycles-pp.__get_user_4
> 0.00 +0.1 0.07 perf-profile.children.cycles-pp.update_rq_clock
> 0.00 +0.1 0.07 perf-profile.children.cycles-pp.select_task_rq
> 0.00 +0.1 0.07 perf-profile.children.cycles-pp.native_apic_msr_eoi
> 0.49 +0.1 0.57 2% perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt
> 0.11 11% +0.1 0.19 2% perf-profile.children.cycles-pp._raw_spin_lock
> 0.00 +0.1 0.08 perf-profile.children.cycles-pp.update_rq_clock_task
> 0.00 +0.1 0.08 perf-profile.children.cycles-pp.__update_load_avg_se
> 0.00 +0.1 0.09 5% perf-profile.children.cycles-pp.irq_enter_rcu
> 0.00 +0.1 0.09 5% perf-profile.children.cycles-pp.__irq_exit_rcu
> 0.00 +0.1 0.09 perf-profile.children.cycles-pp.__update_load_avg_cfs_rq
> 0.00 +0.1 0.09 perf-profile.children.cycles-pp.update_blocked_averages
> 0.00 +0.1 0.09 perf-profile.children.cycles-pp.update_sg_lb_stats
> 0.00 +0.1 0.09 5% perf-profile.children.cycles-pp.set_next_entity
> 0.00 +0.1 0.10 perf-profile.children.cycles-pp.__switch_to_asm
> 0.00 +0.1 0.11 12% perf-profile.children.cycles-pp._copy_to_user
> 0.00 +0.1 0.12 3% perf-profile.children.cycles-pp.menu_select
> 0.00 +0.1 0.12 3% perf-profile.children.cycles-pp.recv_data
> 0.00 +0.1 0.12 3% perf-profile.children.cycles-pp.update_sd_lb_stats
> 0.00 +0.1 0.13 3% perf-profile.children.cycles-pp.native_irq_return_iret
> 0.00 +0.1 0.13 3% perf-profile.children.cycles-pp.__switch_to
> 0.00 +0.1 0.13 3% perf-profile.children.cycles-pp.find_busiest_group
> 0.00 +0.1 0.14 perf-profile.children.cycles-pp.finish_task_switch
> 0.00 +0.1 0.15 3% perf-profile.children.cycles-pp.update_curr
> 0.00 +0.2 0.15 3% perf-profile.children.cycles-pp.mem_cgroup_uncharge_skmem
> 0.00 +0.2 0.16 perf-profile.children.cycles-pp.ttwu_queue_wakelist
> 0.05 +0.2 0.22 2% perf-profile.children.cycles-pp.page_counter_try_charge
> 0.00 +0.2 0.17 2% perf-profile.children.cycles-pp.load_balance
> 0.00 +0.2 0.17 2% perf-profile.children.cycles-pp.___perf_sw_event
> 0.02 141% +0.2 0.19 2% perf-profile.children.cycles-pp.page_counter_uncharge
> 0.33 +0.2 0.52 perf-profile.children.cycles-pp.__free_one_page
> 0.02 141% +0.2 0.21 2% perf-profile.children.cycles-pp.drain_stock
> 0.00 +0.2 0.20 2% perf-profile.children.cycles-pp.prepare_task_switch
> 0.16 3% +0.2 0.38 2% perf-profile.children.cycles-pp.simple_copy_to_iter
> 0.07 11% +0.2 0.31 perf-profile.children.cycles-pp.refill_stock
> 0.07 6% +0.2 0.31 4% perf-profile.children.cycles-pp.move_addr_to_user
> 0.00 +0.2 0.24 perf-profile.children.cycles-pp.enqueue_entity
> 0.00 +0.2 0.25 perf-profile.children.cycles-pp.update_load_avg
> 0.21 2% +0.3 0.48 perf-profile.children.cycles-pp.__list_del_entry_valid_or_report
> 0.00 +0.3 0.31 4% perf-profile.children.cycles-pp.dequeue_entity
> 0.08 5% +0.3 0.40 3% perf-profile.children.cycles-pp.try_charge_memcg
> 0.00 +0.3 0.33 perf-profile.children.cycles-pp.enqueue_task_fair
> 0.00 +0.4 0.35 2% perf-profile.children.cycles-pp.dequeue_task_fair
> 0.00 +0.4 0.35 2% perf-profile.children.cycles-pp.activate_task
> 0.00 +0.4 0.36 2% perf-profile.children.cycles-pp.try_to_wake_up
> 0.00 +0.4 0.37 2% perf-profile.children.cycles-pp.autoremove_wake_function
> 0.00 +0.4 0.39 3% perf-profile.children.cycles-pp.newidle_balance
> 0.12 8% +0.4 0.51 2% perf-profile.children.cycles-pp.mem_cgroup_charge_skmem
> 0.00 +0.4 0.39 perf-profile.children.cycles-pp.ttwu_do_activate
> 0.00 +0.4 0.40 2% perf-profile.children.cycles-pp.__wake_up_common
> 0.18 4% +0.4 0.59 perf-profile.children.cycles-pp.udp_rmem_release
> 0.11 7% +0.4 0.52 perf-profile.children.cycles-pp.__sk_mem_reduce_allocated
> 0.00 +0.4 0.43 perf-profile.children.cycles-pp.__wake_up_common_lock
> 0.00 +0.5 0.46 perf-profile.children.cycles-pp.sched_ttwu_pending
> 0.00 +0.5 0.49 perf-profile.children.cycles-pp.sock_def_readable
> 0.00 +0.5 0.53 2% perf-profile.children.cycles-pp.pick_next_task_fair
> 0.00 +0.5 0.54 2% perf-profile.children.cycles-pp.schedule_idle
> 0.00 +0.6 0.55 perf-profile.children.cycles-pp.__flush_smp_call_function_queue
> 0.15 3% +0.6 0.73 2% perf-profile.children.cycles-pp.__sk_mem_raise_allocated
> 0.00 +0.6 0.57 perf-profile.children.cycles-pp.__sysvec_call_function_single
> 0.16 5% +0.6 0.74 2% perf-profile.children.cycles-pp.__sk_mem_schedule
> 0.00 +0.8 0.78 perf-profile.children.cycles-pp.sysvec_call_function_single
> 0.41 3% +0.9 1.33 2% perf-profile.children.cycles-pp.__udp_enqueue_schedule_skb
> 0.00 +1.2 1.16 2% perf-profile.children.cycles-pp.schedule
> 0.00 +1.2 1.21 2% perf-profile.children.cycles-pp.schedule_timeout
> 0.00 +1.3 1.33 2% perf-profile.children.cycles-pp.__skb_wait_for_more_packets
> 0.00 +1.7 1.66 2% perf-profile.children.cycles-pp.__schedule
> 0.27 3% +2.0 2.25 perf-profile.children.cycles-pp.__skb_recv_udp
> 50.41 +2.4 52.81 perf-profile.children.cycles-pp._raw_spin_lock_irqsave
> 0.00 +2.7 2.68 perf-profile.children.cycles-pp.asm_sysvec_call_function_single
> 49.78 +2.7 52.49 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
> 0.00 +3.0 2.98 perf-profile.children.cycles-pp.acpi_safe_halt
> 0.00 +3.0 3.00 perf-profile.children.cycles-pp.acpi_idle_enter
> 49.51 +3.1 52.57 perf-profile.children.cycles-pp.send_udp_stream
> 49.50 +3.1 52.56 perf-profile.children.cycles-pp.send_omni_inner
> 0.00 +3.1 3.10 perf-profile.children.cycles-pp.cpuidle_enter_state
> 0.00 +3.1 3.12 perf-profile.children.cycles-pp.cpuidle_enter
> 0.00 +3.4 3.37 perf-profile.children.cycles-pp.cpuidle_idle_call
> 48.90 +3.4 52.30 perf-profile.children.cycles-pp.sendto
> 47.85 +4.0 51.83 perf-profile.children.cycles-pp.__x64_sys_sendto
> 47.73 +4.0 51.77 perf-profile.children.cycles-pp.__sys_sendto
> 0.00 +4.1 4.10 perf-profile.children.cycles-pp.start_secondary
> 0.00 +4.1 4.13 perf-profile.children.cycles-pp.do_idle
> 0.00 +4.1 4.14 perf-profile.children.cycles-pp.secondary_startup_64_no_verify
> 0.00 +4.1 4.14 perf-profile.children.cycles-pp.cpu_startup_entry
> 46.54 +4.7 51.28 perf-profile.children.cycles-pp.sock_sendmsg
> 46.10 +5.0 51.11 perf-profile.children.cycles-pp.udp_sendmsg
> 3.70 +8.0 11.71 perf-profile.children.cycles-pp.copyout
> 3.71 +8.1 11.80 perf-profile.children.cycles-pp._copy_to_iter
> 3.96 +8.5 12.43 perf-profile.children.cycles-pp.__skb_datagram_iter
> 3.96 +8.5 12.44 perf-profile.children.cycles-pp.skb_copy_datagram_iter
> 35.14 +11.3 46.40 perf-profile.children.cycles-pp.ip_make_skb
> 32.71 2% +13.0 45.66 perf-profile.children.cycles-pp.__ip_append_data
> 10.28 +20.6 30.89 perf-profile.children.cycles-pp.sk_page_frag_refill
> 10.25 +20.6 30.88 perf-profile.children.cycles-pp.skb_page_frag_refill
> 9.86 +20.8 30.63 perf-profile.children.cycles-pp.__alloc_pages
> 9.62 +20.8 30.42 perf-profile.children.cycles-pp.get_page_from_freelist
> 8.42 +21.3 29.72 perf-profile.children.cycles-pp.rmqueue
> 6.47 +22.8 29.22 perf-profile.children.cycles-pp.rmqueue_bulk
> 19.11 2% -6.0 13.08 perf-profile.self.cycles-pp.copyin
> 1.81 2% -1.4 0.39 perf-profile.self.cycles-pp.rmqueue
> 1.81 2% -1.3 0.46 2% perf-profile.self.cycles-pp.__ip_select_ident
> 1.47 4% -1.2 0.31 perf-profile.self.cycles-pp.free_unref_page_commit
> 1.29 2% -0.5 0.75 perf-profile.self.cycles-pp.__ip_append_data
> 0.71 -0.4 0.29 perf-profile.self.cycles-pp.udp_sendmsg
> 0.68 2% -0.4 0.32 perf-profile.self.cycles-pp.__zone_watermark_ok
> 0.50 -0.3 0.16 perf-profile.self.cycles-pp.skb_release_data
> 0.59 3% -0.3 0.26 3% perf-profile.self.cycles-pp.fib_table_lookup
> 0.46 4% -0.3 0.15 3% perf-profile.self.cycles-pp.kmem_cache_free
> 0.63 -0.3 0.33 2% perf-profile.self.cycles-pp._raw_spin_lock_irqsave
> 0.47 -0.3 0.19 perf-profile.self.cycles-pp.__sys_sendto
> 0.44 -0.2 0.21 2% perf-profile.self.cycles-pp.kmem_cache_alloc_node
> 0.36 -0.2 0.16 3% perf-profile.self.cycles-pp.send_omni_inner
> 0.35 2% -0.2 0.15 3% perf-profile.self.cycles-pp.ip_finish_output2
> 0.29 -0.2 0.12 perf-profile.self.cycles-pp._copy_from_user
> 0.24 -0.1 0.10 4% perf-profile.self.cycles-pp.__netif_receive_skb_core
> 0.22 2% -0.1 0.08 5% perf-profile.self.cycles-pp.free_unref_page
> 0.19 2% -0.1 0.06 perf-profile.self.cycles-pp.ip_rcv_core
> 0.21 2% -0.1 0.08 perf-profile.self.cycles-pp.__alloc_skb
> 0.20 2% -0.1 0.08 perf-profile.self.cycles-pp.sock_wfree
> 0.22 2% -0.1 0.10 4% perf-profile.self.cycles-pp.send_data
> 0.21 -0.1 0.09 perf-profile.self.cycles-pp.sendto
> 0.21 2% -0.1 0.10 4% perf-profile.self.cycles-pp.ip_rcv_finish_core
> 0.21 2% -0.1 0.09 5% perf-profile.self.cycles-pp.__ip_make_skb
> 0.20 4% -0.1 0.09 5% perf-profile.self.cycles-pp._raw_spin_lock_irq
> 0.21 2% -0.1 0.10 4% perf-profile.self.cycles-pp.__dev_queue_xmit
> 0.38 3% -0.1 0.27 perf-profile.self.cycles-pp.get_page_from_freelist
> 0.20 2% -0.1 0.09 perf-profile.self.cycles-pp.udp_send_skb
> 0.18 2% -0.1 0.07 perf-profile.self.cycles-pp.__udp_enqueue_schedule_skb
> 0.18 4% -0.1 0.08 6% perf-profile.self.cycles-pp.__mkroute_output
> 0.25 -0.1 0.15 3% perf-profile.self.cycles-pp._copy_from_iter
> 0.27 4% -0.1 0.17 2% perf-profile.self.cycles-pp.skb_page_frag_refill
> 0.16 -0.1 0.06 7% perf-profile.self.cycles-pp.sock_sendmsg
> 0.33 2% -0.1 0.24 perf-profile.self.cycles-pp.__slab_free
> 0.15 3% -0.1 0.06 perf-profile.self.cycles-pp.udp4_lib_lookup2
> 0.38 2% -0.1 0.29 2% perf-profile.self.cycles-pp.free_unref_page_prepare
> 0.26 -0.1 0.17 perf-profile.self.cycles-pp._raw_spin_trylock
> 0.15 -0.1 0.06 perf-profile.self.cycles-pp.ip_output
> 0.14 -0.1 0.05 8% perf-profile.self.cycles-pp.process_backlog
> 0.14 -0.1 0.06 perf-profile.self.cycles-pp.ip_route_output_flow
> 0.14 -0.1 0.06 perf-profile.self.cycles-pp.__udp4_lib_lookup
> 0.21 2% -0.1 0.13 3% perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe
> 0.12 3% -0.1 0.05 perf-profile.self.cycles-pp.siphash_3u32
> 0.13 3% -0.1 0.06 8% perf-profile.self.cycles-pp.ip_send_skb
> 0.17 -0.1 0.10 perf-profile.self.cycles-pp.__do_softirq
> 0.15 3% -0.1 0.08 5% perf-profile.self.cycles-pp.skb_set_owner_w
> 0.17 2% -0.1 0.10 4% perf-profile.self.cycles-pp.aa_sk_perm
> 0.12 -0.1 0.05 perf-profile.self.cycles-pp.__x64_sys_sendto
> 0.12 6% -0.1 0.05 perf-profile.self.cycles-pp.fib_lookup_good_nhc
> 0.19 2% -0.1 0.13 perf-profile.self.cycles-pp.__list_add_valid_or_report
> 0.14 3% -0.1 0.07 6% perf-profile.self.cycles-pp.net_rx_action
> 0.16 2% -0.1 0.10 perf-profile.self.cycles-pp.do_syscall_64
> 0.11 -0.1 0.05 perf-profile.self.cycles-pp.__udp4_lib_rcv
> 0.16 3% -0.1 0.10 4% perf-profile.self.cycles-pp.get_pfnblock_flags_mask
> 0.11 4% -0.1 0.05 perf-profile.self.cycles-pp.ip_route_output_key_hash_rcu
> 0.10 4% -0.1 0.05 perf-profile.self.cycles-pp.ip_generic_getfrag
> 0.10 -0.1 0.05 perf-profile.self.cycles-pp.ipv4_mtu
> 0.26 -0.0 0.21 2% perf-profile.self.cycles-pp.__fget_light
> 0.15 3% -0.0 0.11 4% perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack
> 0.24 -0.0 0.20 2% perf-profile.self.cycles-pp.__alloc_pages
> 0.15 3% -0.0 0.12 perf-profile.self.cycles-pp.__check_object_size
> 0.11 -0.0 0.08 6% perf-profile.self.cycles-pp.syscall_return_via_sysret
> 0.08 5% -0.0 0.05 perf-profile.self.cycles-pp.loopback_xmit
> 0.13 -0.0 0.11 4% perf-profile.self.cycles-pp.prep_compound_page
> 0.11 -0.0 0.09 5% perf-profile.self.cycles-pp.irqtime_account_irq
> 0.09 10% -0.0 0.06 7% perf-profile.self.cycles-pp.__xfrm_policy_check2
> 0.07 -0.0 0.05 perf-profile.self.cycles-pp.alloc_pages
> 0.08 -0.0 0.06 7% perf-profile.self.cycles-pp.__entry_text_start
> 0.09 5% -0.0 0.07 perf-profile.self.cycles-pp.free_tail_page_prepare
> 0.10 +0.0 0.11 perf-profile.self.cycles-pp.perf_adjust_freq_unthr_context
> 0.06 +0.0 0.08 6% perf-profile.self.cycles-pp.free_pcppages_bulk
> 0.05 8% +0.0 0.10 4% perf-profile.self.cycles-pp._raw_spin_lock_bh
> 0.07 +0.0 0.12 perf-profile.self.cycles-pp.__mod_zone_page_state
> 0.00 +0.1 0.05 perf-profile.self.cycles-pp.cpuidle_idle_call
> 0.00 +0.1 0.05 perf-profile.self.cycles-pp.udp_rmem_release
> 0.00 +0.1 0.05 perf-profile.self.cycles-pp.__flush_smp_call_function_queue
> 0.00 +0.1 0.05 perf-profile.self.cycles-pp.sock_def_readable
> 0.00 +0.1 0.05 perf-profile.self.cycles-pp.update_cfs_group
> 0.11 11% +0.1 0.17 2% perf-profile.self.cycles-pp._raw_spin_lock
> 0.00 +0.1 0.05 8% perf-profile.self.cycles-pp.finish_task_switch
> 0.00 +0.1 0.05 8% perf-profile.self.cycles-pp.cgroup_rstat_updated
> 0.00 +0.1 0.06 perf-profile.self.cycles-pp.do_idle
> 0.00 +0.1 0.06 perf-profile.self.cycles-pp.__skb_wait_for_more_packets
> 0.00 +0.1 0.06 perf-profile.self.cycles-pp.__x2apic_send_IPI_dest
> 0.00 +0.1 0.06 7% perf-profile.self.cycles-pp.enqueue_entity
> 0.00 +0.1 0.07 7% perf-profile.self.cycles-pp.schedule_timeout
> 0.00 +0.1 0.07 7% perf-profile.self.cycles-pp.move_addr_to_user
> 0.00 +0.1 0.07 7% perf-profile.self.cycles-pp.menu_select
> 0.00 +0.1 0.07 7% perf-profile.self.cycles-pp.native_apic_msr_eoi
> 0.00 +0.1 0.07 7% perf-profile.self.cycles-pp.update_sg_lb_stats
> 0.00 +0.1 0.07 perf-profile.self.cycles-pp.__update_load_avg_se
> 0.00 +0.1 0.07 perf-profile.self.cycles-pp.__get_user_4
> 0.00 +0.1 0.08 6% perf-profile.self.cycles-pp.__sk_mem_reduce_allocated
> 0.00 +0.1 0.08 perf-profile.self.cycles-pp.update_curr
> 0.00 +0.1 0.08 5% perf-profile.self.cycles-pp.__update_load_avg_cfs_rq
> 0.00 +0.1 0.09 5% perf-profile.self.cycles-pp.try_to_wake_up
> 0.00 +0.1 0.09 perf-profile.self.cycles-pp.recvfrom
> 0.00 +0.1 0.09 perf-profile.self.cycles-pp.mem_cgroup_charge_skmem
> 0.00 +0.1 0.09 perf-profile.self.cycles-pp.update_load_avg
> 0.00 +0.1 0.09 5% perf-profile.self.cycles-pp.enqueue_task_fair
> 0.00 +0.1 0.10 4% perf-profile.self.cycles-pp._copy_to_iter
> 0.00 +0.1 0.10 4% perf-profile.self.cycles-pp.newidle_balance
> 0.00 +0.1 0.10 4% perf-profile.self.cycles-pp.recv_data
> 0.00 +0.1 0.10 perf-profile.self.cycles-pp.refill_stock
> 0.00 +0.1 0.10 perf-profile.self.cycles-pp.__switch_to_asm
> 0.00 +0.1 0.11 15% perf-profile.self.cycles-pp._copy_to_user
> 0.00 +0.1 0.12 perf-profile.self.cycles-pp.recv_omni
> 0.00 +0.1 0.12 perf-profile.self.cycles-pp.mem_cgroup_uncharge_skmem
> 0.00 +0.1 0.13 3% perf-profile.self.cycles-pp.native_irq_return_iret
> 0.00 +0.1 0.13 perf-profile.self.cycles-pp.__switch_to
> 0.06 +0.1 0.20 2% perf-profile.self.cycles-pp.rmqueue_bulk
> 0.09 5% +0.1 0.23 4% perf-profile.self.cycles-pp.udp_recvmsg
> 0.00 +0.1 0.14 3% perf-profile.self.cycles-pp.__skb_recv_udp
> 0.00 +0.1 0.14 3% perf-profile.self.cycles-pp.___perf_sw_event
> 0.08 +0.1 0.22 2% perf-profile.self.cycles-pp.__skb_datagram_iter
> 0.03 70% +0.2 0.20 4% perf-profile.self.cycles-pp.page_counter_try_charge
> 0.02 141% +0.2 0.18 4% perf-profile.self.cycles-pp.__sys_recvfrom
> 0.00 +0.2 0.17 2% perf-profile.self.cycles-pp.__schedule
> 0.00 +0.2 0.17 2% perf-profile.self.cycles-pp.try_charge_memcg
> 0.00 +0.2 0.17 2% perf-profile.self.cycles-pp.page_counter_uncharge
> 0.00 +0.2 0.21 2% perf-profile.self.cycles-pp.__sk_mem_raise_allocated
> 0.14 3% +0.2 0.36 perf-profile.self.cycles-pp.__free_one_page
> 0.20 2% +0.3 0.47 perf-profile.self.cycles-pp.__list_del_entry_valid_or_report
> 0.00 +2.1 2.07 2% perf-profile.self.cycles-pp.acpi_safe_halt
> 49.78 +2.7 52.49 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
> 3.68 +8.0 11.64 perf-profile.self.cycles-pp.copyout
>
>
>
> Disclaimer:
> Results have been estimated based on internal Intel analysis and are provided
> for informational purposes only. Any difference in system hardware or software
> design or configuration may affect actual performance.