The patchset is meant to be pretty stable, not so much a testing ground.
Main differences from mainline are:
1. Better performance & resource consumption, particularly on larger machines.
2. Diagnosis tools (kgdb, early_printk, etc).
3. Kexec support.
4. ivtv drivers
I'd be very interested in feedback from anyone willing to test on any
platform, however large or small.
ftp://ftp.kernel.org/pub/linux/kernel/people/mbligh/2.6.5/patch-2.6.5-mjb1.bz2
Since 2.6.5-rc3-mjb2 (~ = changed, + = added, - = dropped)
Notes:
-----------------------------------------------------------------------
Now in Linus' tree:
Dropped:
New:
+ aio-retry
+ 4g4g-aio-hang-fix
+ aio-retry-elevated-refcount
+ aio-splice-runlist
+ aio-wait-page
+ aio-fs_read
+ aio-upfront-readahead
+ O_SYNC-speedup
+ aio-O_SYNC
+ gang_lookup_next
+ aio-gang_lookup-fix
+ aio-O_SYNC-short-write-fix.patch
+ aio-cancel-fix
+ aio-read-immediate
+ aio-pipe
+ aio-context-switch
+ aio-putioctx-flushworkqueue
+ aio-poll
AIO filesystem support Suparna et al.
+ per_task_TUB_PPC32 Anton
Enable per-task TASK_UMAPPED_BASE on PPC32
+ jbd_journal_speedup Andrew Morton
ext3 fs speedup
+ amd64_sched Darren Hart
Make AMD scheduler behave as flat SMP, not NUMA
Pending:
per_node_rss
local_balance_exec
reluctance in cross-node balance (less_bouncy)
sched tunables patch
emulex update
NUMA membinding API
x86_64 update
config_numasched
sched tunables (reinstante)
list_of_lists
Child runs first (akpm)
Netdump
Present in this patch:
-mjb Martin J. Bligh
Add a tag to the makefile
kgdb Various
Stolen from akpm's 2.6.0-mm1, includes fixes
kgdboe_netpoll Matt Mackall et al.
Kgdb over ethernet support that works with the netpoll infrastructure
kgdboe_build_fix Andrew Morton
Fix kgdboe stuff so non-ia32 platforms build
kgdb_x86_64 Jim Houston
Support kgdb on x86_64
kgdb_gdb6_patches Jim Houston
Patches for gdb to support kgdb on x86_64, under scripts/kgdb/
ppc64_reloc_hide Anton Blanchard / Paul Mackerras
PPC 64 fixups
spinlock_inlining Andrew Morton & Martin J. Bligh
Inline spinlocks for profiling. Made into a ugly config option by me.
lockmeter John Hawkes / Hanna Linder
Locking stats.
lockmeter_ia64 Ray Bryant
Add a config option for lockmeter on ia64
oops_dump_preceding_code Andrew Morton
dump opcodes preceding and after the offending EIP.
scheduler_2.6.5_rc3_mm1 Nick Piggin
sched_domains code
4k_stacks Arjan / Dave H / bcrl
Provide an option to use 4k kernel stacks instead of 8k
confighz Andrew Morton / Dave Hansen
Make HZ a config option of 100 Hz or 1000 Hz
config_page_offset Dave Hansen / Andrea
Make PAGE_OFFSET a config option
numameminfo Martin Bligh / Keith Mannthey
Expose NUMA meminfo information under /proc/meminfo.numa
partial_objrmap Dave McCracken
Object based rmap for filebacked pages.
anon_mm2 Hugh Dickins
anon_mm3 Hugh Dickins
anon_mm4 Hugh Dickins
anon_mm5 Hugh Dickins
anon_mm6 Hugh Dickins
anon_mm7 Hugh Dickins
anon_mm8 Hugh Dickins
Object based rmap for anonymous memory
4g4g Ingo Molnar
Provide a 4G/4G user/kernel split for 32 bit memory lushes.
4g_zap_low_mappings Martin Lorenz
stop zap_low_mappings from being __init
4g4g_locked_copy Dave McCracken
Fix locking bug in 4/4 split
disable preempt Martin J. Bligh
I broke preempt somehow, temporarily disable it to stop accidents
aiofix2 Mingming Cao
fixed a bug in ioctx_alloc()
percpu_real_loadavg Dave Hansen / Martin J. Bligh
Tell me what the real load average is, and tell me per cpu.
gfp_node_strict Dave Hansen
Add a node strict binding as a gfp mask option
irqbal_fast Adam Litke
Balance IRQs more readily
kcg Adam Litke
Acylic call graphs from the kernel. Wheeeeeeeeeeeee!
kcg_gcc_detect Adam Litke
Detect older gcc versions that don't work with mcount, and crap out
numa_mem_equals Dave Hansen
mem= command line parameter NUMA awareness.
autoswap Con Kolivas
Auto-tune swapiness
emulex driver Emulex
Driver for emulex fiberchannel cards
multiple_emulex Mike Anderson
Allow multiple Emulex cards
protocol254 Paul Mackerras / Omkhar
Allow protocol 254
slabtune Dave McCracken
Take slab in bigger bites on larger machines
topdown Bill Irwin
Turn userspace upside down for fun & profit
stacktrace Adam Litke
Stack backtracing via frame pointers
fasync_lock_rcu Manfred Spraul
Use RCU for fasync_lock
aio-retry
4g4g-aio-hang-fix
aio-retry-elevated-refcount
aio-splice-runlist
aio-wait-page
aio-fs_read
aio-upfront-readahead
O_SYNC-speedup
aio-O_SYNC
gang_lookup_next
aio-gang_lookup-fix
aio-O_SYNC-short-write-fix.patch
aio-cancel-fix
aio-read-immediate
aio-pipe
aio-context-switch
aio-putioctx-flushworkqueue
aio-poll
AIO filesystem support Suparna et al.
kexec Eric Biederman et al.
Exec a kernel for breakfast today.
lockmeter_notsc Martin J. Bligh
Lockmeter does not require CONFIG_X86_TSC.
tiocgdev Gerd Knorr
vma_statistics Martin J. Bligh
Provide per VMA stats
per_task_TUB Adam Litke
Per task TASK_UNMAPPED_BASE
per_task_TUB_PPC32 Anton
Enable per-task TASK_UMAPPED_BASE on PPC32
implicit_hugetlb Adam Litke
Implicit allocation of huge pages
hugetlb_dyn_as Adam Litke
Dynamic huge pages.
irq_vector James Cleverdon
Fix irq vector limits for Summit
ivtv Kevin Thayer / Steven Fuerst
Driver for ivtv (includes Hauppauge PVR 250 / 350)
Written by Kevin Thayer, ported to 2.6 by Steven Fuerst
Version 0.1.9
sysfs_backing_store1 Maneesh Soni
sysfs_backing_store2 Maneesh Soni
sysfs_backing_store3 Maneesh Soni
sysfs_backing_store4 Maneesh Soni
sysfs_backing_store5 Maneesh Soni
sysfs_backing_store6 Maneesh Soni
Make sysfs more efficient in its usage of lowmem
vgtod1 John Stultz
vgtod2 John Stultz
vgtod3 John Stultz
Vsyscall gettimeofday for ia32
physnode_map Martin J. Bligh
Hack around problem of missing area in physnode_map
sched_tunables R. Love / Darren Hart
Provide sched tunables to play with on a rainy day.
zone_gap Andy Whitcroft
Fix up the gap between ZONE_NORMAL and ZONE_HIGHMEM on NUMA.
max_mp_busses James Cleverdon
Increase MAX_MP_BUSSES
schedstats Rick Lindsley
Provide lotsa scheduler statistics
schedstats-tools Rick Lindsley
Grub around in lotsa scheduler statistics
jbd_journal_speedup Andrew Morton
ext3 fs speedup
amd64_sched Darren Hart
Make AMD scheduler behave as flat SMP, not NUMA
Hi,
tested with latencytest-0.5.2. Sched stats turned off in the kernel.
Look at "2.6.5 latencytest +aa5 +mm3 as/cfq scheduler" to compare.
---------- 2.6.5-mjb1 AS scheduler ----------
x11.log:
cpu_hz = 2.08792e+09
cpu_load=0.800000 loops per run = 537513
total latency = 1.953125 ms
cpu latency = 1.562500 ms
max diff = 3.03868 ms (overrun 0)
within 1ms = 33088, factor = 99.9788%
within 2ms = 33095, factor = 100%
deviation = 0.0196589
proc.log:
cpu_hz = 2.08792e+09
cpu_load=0.800000 loops per run = 537547
total latency = 1.953125 ms
cpu latency = 1.562500 ms
max diff = 3.05196 ms (overrun 0)
within 1ms = 15385, factor = 99.9805%
within 2ms = 15388, factor = 100%
deviation = 0.0205876
diskwrite.log:
cpu_hz = 2.08792e+09
cpu_load=0.800000 loops per run = 537500
total latency = 1.953125 ms
cpu latency = 1.562500 ms
max diff = 4.40418 ms (overrun 1)
within 1ms = 10989, factor = 99.9273%
within 2ms = 10996, factor = 99.9909%
deviation = 0.0545299
diskcopy.log:
cpu_hz = 2.08792e+09
cpu_load=0.800000 loops per run = 537552
total latency = 1.953125 ms
cpu latency = 1.562500 ms
max diff = 5.08319 ms (overrun 3)
within 1ms = 27949, factor = 99.9321%
within 2ms = 27965, factor = 99.9893%
deviation = 0.0385951
diskread.log:
cpu_hz = 2.08792e+09
cpu_load=0.800000 loops per run = 537564
total latency = 1.953125 ms
cpu latency = 1.562500 ms
max diff = 3.15495 ms (overrun 0)
within 1ms = 28029, factor = 99.9715%
within 2ms = 28037, factor = 100%
deviation = 0.0249104
Best regards,
Marcus
> tested with latencytest-0.5.2. Sched stats turned off in the kernel.
> Look at "2.6.5 latencytest +aa5 +mm3 as/cfq scheduler" to compare.
The main thing that looks different is that loops per run is lower.
What does that mean?
> ---------- 2.6.5-mjb1 AS scheduler ----------
> x11.log:
> cpu_hz = 2.08792e+09
> cpu_load=0.800000 loops per run = 537513
> total latency = 1.953125 ms
> cpu latency = 1.562500 ms
> max diff = 3.03868 ms (overrun 0)
> within 1ms = 33088, factor = 99.9788%
> within 2ms = 33095, factor = 100%
> deviation = 0.0196589
>
> proc.log:
> cpu_hz = 2.08792e+09
> cpu_load=0.800000 loops per run = 537547
> total latency = 1.953125 ms
> cpu latency = 1.562500 ms
> max diff = 3.05196 ms (overrun 0)
> within 1ms = 15385, factor = 99.9805%
> within 2ms = 15388, factor = 100%
> deviation = 0.0205876
>
> diskwrite.log:
> cpu_hz = 2.08792e+09
> cpu_load=0.800000 loops per run = 537500
> total latency = 1.953125 ms
> cpu latency = 1.562500 ms
> max diff = 4.40418 ms (overrun 1)
> within 1ms = 10989, factor = 99.9273%
> within 2ms = 10996, factor = 99.9909%
> deviation = 0.0545299
>
> diskcopy.log:
> cpu_hz = 2.08792e+09
> cpu_load=0.800000 loops per run = 537552
> total latency = 1.953125 ms
> cpu latency = 1.562500 ms
> max diff = 5.08319 ms (overrun 3)
> within 1ms = 27949, factor = 99.9321%
> within 2ms = 27965, factor = 99.9893%
> deviation = 0.0385951
>
> diskread.log:
> cpu_hz = 2.08792e+09
> cpu_load=0.800000 loops per run = 537564
> total latency = 1.953125 ms
> cpu latency = 1.562500 ms
> max diff = 3.15495 ms (overrun 0)
> within 1ms = 28029, factor = 99.9715%
> within 2ms = 28037, factor = 100%
> deviation = 0.0249104
>
> Best regards,
>
> Marcus
>
>
>
Martin J. Bligh wrote:
> The main thing that looks different is that loops per run is lower.
> What does that mean?
Hmm. Sorry, here seems to be an error with my first run of the -mjb1
bench. Now, in the second try it has the loops running as the others, I
think. And a good performance...
x11.log:
cpu_hz = 2.0885e+09
cpu_load=0.800000 loops per run = 645177
total latency = 1.953125 ms
cpu latency = 1.562500 ms
max diff = 3.06248 ms (overrun 0)
within 1ms = 38919, factor = 99.9794%
within 2ms = 38927, factor = 100%
deviation = 0.0216797
proc.log:
cpu_hz = 2.0885e+09
cpu_load=0.800000 loops per run = 645114
total latency = 1.953125 ms
cpu latency = 1.562500 ms
max diff = 2.96921 ms (overrun 0)
within 1ms = 15422, factor = 99.987%
within 2ms = 15424, factor = 100%
deviation = 0.0223192
diskwrite.log:
cpu_hz = 2.0885e+09
cpu_load=0.800000 loops per run = 645226
total latency = 1.953125 ms
cpu latency = 1.562500 ms
max diff = 4.64053 ms (overrun 2)
within 1ms = 13345, factor = 99.9176%
within 2ms = 13354, factor = 99.985%
deviation = 0.0517744
diskcopy.log:
cpu_hz = 2.0885e+09
cpu_load=0.800000 loops per run = 644902
total latency = 1.953125 ms
cpu latency = 1.562500 ms
max diff = 3.45113 ms (overrun 0)
within 1ms = 40427, factor = 99.9357%
within 2ms = 40453, factor = 100%
deviation = 0.0407751
diskread.log:
cpu_hz = 2.0885e+09
cpu_load=0.800000 loops per run = 644972
total latency = 1.953125 ms
cpu latency = 1.562500 ms
max diff = 3.2573 ms (overrun 0)
within 1ms = 38383, factor = 99.9401%
within 2ms = 38406, factor = 100%
deviation = 0.0324159
Marcus