Greeting,
FYI, we noticed a -45.4% regression of stress-ng.mknod.ops_per_sec due to commit:
commit: 2bf1ec0ff067ff8f692d261b29c713f3583f7e2a ("xfs: log forces imply data device cache flushes")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
in testcase: stress-ng
on test machine: 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 512G memory
with following parameters:
nr_threads: 10%
disk: 1HDD
testtime: 60s
fs: xfs
class: filesystem
test: mknod
cpufreq_governor: performance
ucode: 0x5003006
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <[email protected]>
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
bin/lkp run generated-yaml-file
=========================================================================================
class/compiler/cpufreq_governor/disk/fs/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime/ucode:
filesystem/gcc-9/performance/1HDD/xfs/x86_64-rhel-8.3/10%/debian-10.4-x86_64-20200603.cgz/lkp-csl-2sp7/mknod/stress-ng/60s/0x5003006
commit:
45eddb4140 ("xfs: factor out forced iclog flushes")
2bf1ec0ff0 ("xfs: log forces imply data device cache flushes")
45eddb414047c366 2bf1ec0ff067ff8f692d261b29c
---------------- ---------------------------
%stddev %change %stddev
\ | \
87135 -45.4% 47612 stress-ng.mknod.ops
1451 -45.4% 793.24 stress-ng.mknod.ops_per_sec
23.00 ? 7% -51.4% 11.17 ? 12% stress-ng.time.percent_of_cpu_this_job_got
13.80 ? 7% -50.7% 6.80 ? 8% stress-ng.time.system_time
211458 ? 2% -62.4% 79605 ? 14% stress-ng.time.voluntary_context_switches
0.30 ? 2% -0.1 0.18 mpstat.cpu.all.sys%
13993 ? 2% -38.1% 8659 softirqs.BLOCK
27747 -2.3% 27103 proc-vmstat.nr_slab_reclaimable
76223 ? 3% -57.3% 32548 ? 5% proc-vmstat.pgpgout
1170 ? 3% -57.3% 500.17 ? 5% vmstat.io.bo
10752 -47.7% 5624 ? 6% vmstat.system.cs
32820 -34.5% 21499 slabinfo.kmalloc-rcl-64.active_objs
512.67 -34.6% 335.50 slabinfo.kmalloc-rcl-64.active_slabs
32836 -34.5% 21508 slabinfo.kmalloc-rcl-64.num_objs
512.67 -34.6% 335.50 slabinfo.kmalloc-rcl-64.num_slabs
24913 ? 2% -42.8% 14251 interrupts.315:PCI-MSI.376832-edge.ahci[0000:00:17.0]
71844 ? 6% -19.9% 57564 ? 3% interrupts.CAL:Function_call_interrupts
206.50 ? 37% -42.9% 118.00 ? 41% interrupts.CPU1.NMI:Non-maskable_interrupts
206.50 ? 37% -42.9% 118.00 ? 41% interrupts.CPU1.PMI:Performance_monitoring_interrupts
173.17 ? 26% -31.7% 118.33 ? 38% interrupts.CPU2.NMI:Non-maskable_interrupts
173.17 ? 26% -31.7% 118.33 ? 38% interrupts.CPU2.PMI:Performance_monitoring_interrupts
189.83 ? 34% -40.6% 112.83 ? 25% interrupts.CPU49.NMI:Non-maskable_interrupts
189.83 ? 34% -40.6% 112.83 ? 25% interrupts.CPU49.PMI:Performance_monitoring_interrupts
181.67 ? 25% -38.3% 112.17 ? 24% interrupts.CPU50.NMI:Non-maskable_interrupts
181.67 ? 25% -38.3% 112.17 ? 24% interrupts.CPU50.PMI:Performance_monitoring_interrupts
1895 ? 16% -32.8% 1274 ? 20% interrupts.RES:Rescheduling_interrupts
3.127e+08 ? 5% -12.2% 2.746e+08 ? 3% perf-stat.i.branch-instructions
10683 -49.8% 5364 ? 6% perf-stat.i.context-switches
3.866e+08 ? 4% -14.2% 3.318e+08 ? 3% perf-stat.i.dTLB-loads
1.949e+08 ? 3% -14.7% 1.662e+08 ? 3% perf-stat.i.dTLB-stores
1.538e+09 ? 5% -12.4% 1.348e+09 ? 3% perf-stat.i.instructions
9.31 ? 4% -13.6% 8.04 ? 3% perf-stat.i.metric.M/sec
127426 ? 14% -32.6% 85864 ? 9% perf-stat.i.node-load-misses
3.078e+08 ? 5% -12.2% 2.702e+08 ? 3% perf-stat.ps.branch-instructions
10512 -49.8% 5279 ? 6% perf-stat.ps.context-switches
3.805e+08 ? 4% -14.2% 3.265e+08 ? 3% perf-stat.ps.dTLB-loads
1.918e+08 ? 3% -14.7% 1.635e+08 ? 3% perf-stat.ps.dTLB-stores
1.514e+09 ? 5% -12.4% 1.327e+09 ? 3% perf-stat.ps.instructions
125399 ? 14% -32.6% 84480 ? 9% perf-stat.ps.node-load-misses
9.563e+10 ? 6% -12.3% 8.383e+10 ? 3% perf-stat.total.instructions
8.31 ? 20% -3.9 4.45 ? 25% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe
8.30 ? 20% -3.9 4.45 ? 25% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe
2.35 ? 19% -1.6 0.75 ? 25% perf-profile.calltrace.cycles-pp.__x64_sys_sync.do_syscall_64.entry_SYSCALL_64_after_hwframe
2.35 ? 19% -1.6 0.75 ? 25% perf-profile.calltrace.cycles-pp.ksys_sync.__x64_sys_sync.do_syscall_64.entry_SYSCALL_64_after_hwframe
2.08 ? 19% -1.6 0.50 ? 72% perf-profile.calltrace.cycles-pp.iterate_supers.ksys_sync.__x64_sys_sync.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.85 ? 25% -0.7 1.14 ? 31% perf-profile.calltrace.cycles-pp.do_mknodat.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.04 ? 27% -0.7 0.36 ?106% perf-profile.calltrace.cycles-pp.xfs_inactive_ifree.xfs_inactive.xfs_fs_destroy_inode.destroy_inode.do_unlinkat
1.08 ? 27% -0.6 0.46 ? 77% perf-profile.calltrace.cycles-pp.destroy_inode.do_unlinkat.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.05 ? 27% -0.6 0.45 ? 77% perf-profile.calltrace.cycles-pp.xfs_fs_destroy_inode.destroy_inode.do_unlinkat.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.04 ? 27% -0.6 0.44 ? 78% perf-profile.calltrace.cycles-pp.xfs_inactive.xfs_fs_destroy_inode.destroy_inode.do_unlinkat.do_syscall_64
0.89 ? 17% -0.3 0.58 ? 9% perf-profile.calltrace.cycles-pp.worker_thread.kthread.ret_from_fork
1.21 ? 8% +0.2 1.45 ? 7% perf-profile.calltrace.cycles-pp.perf_mux_hrtimer_handler.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt
8.13 ? 9% +2.0 10.16 ? 6% perf-profile.calltrace.cycles-pp.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt
2.35 ? 19% -1.6 0.75 ? 25% perf-profile.children.cycles-pp.__x64_sys_sync
2.35 ? 19% -1.6 0.75 ? 25% perf-profile.children.cycles-pp.ksys_sync
2.09 ? 19% -1.4 0.65 ? 25% perf-profile.children.cycles-pp.iterate_supers
2.25 ? 18% -1.1 1.14 ? 26% perf-profile.children.cycles-pp._raw_spin_lock
1.40 ? 25% -1.1 0.31 ? 54% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
1.85 ? 25% -0.7 1.14 ? 31% perf-profile.children.cycles-pp.do_mknodat
1.08 ? 27% -0.5 0.55 ? 43% perf-profile.children.cycles-pp.destroy_inode
1.05 ? 27% -0.5 0.54 ? 42% perf-profile.children.cycles-pp.xfs_fs_destroy_inode
1.04 ? 27% -0.5 0.54 ? 43% perf-profile.children.cycles-pp.xfs_inactive
1.04 ? 27% -0.5 0.53 ? 44% perf-profile.children.cycles-pp.xfs_inactive_ifree
0.93 ? 21% -0.5 0.44 ? 24% perf-profile.children.cycles-pp.__schedule
0.49 ? 25% -0.4 0.11 ? 76% perf-profile.children.cycles-pp.pick_next_task_fair
1.05 ? 20% -0.4 0.69 ? 13% perf-profile.children.cycles-pp.find_busiest_group
0.66 ? 19% -0.3 0.32 ? 30% perf-profile.children.cycles-pp.schedule
1.00 ? 20% -0.3 0.65 ? 13% perf-profile.children.cycles-pp.update_sd_lb_stats
0.60 ? 20% -0.3 0.29 ? 31% perf-profile.children.cycles-pp.xfs_ifree
0.89 ? 17% -0.3 0.58 ? 9% perf-profile.children.cycles-pp.worker_thread
0.44 ? 26% -0.3 0.16 ? 45% perf-profile.children.cycles-pp.newidle_balance
0.49 ? 39% -0.3 0.22 ? 35% perf-profile.children.cycles-pp.xfs_fs_sync_fs
0.40 ? 49% -0.2 0.17 ? 29% perf-profile.children.cycles-pp.xfs_log_force
0.31 ? 29% -0.2 0.11 ? 56% perf-profile.children.cycles-pp.schedule_timeout
0.24 ? 60% -0.2 0.06 ? 50% perf-profile.children.cycles-pp.xfs_inobt_get_rec
0.38 ? 19% -0.2 0.21 ? 30% perf-profile.children.cycles-pp.xfs_btree_lookup
0.42 ? 14% -0.2 0.26 ? 35% perf-profile.children.cycles-pp.xfs_check_agi_freecount
0.30 ? 27% -0.2 0.14 ? 37% perf-profile.children.cycles-pp.xfs_btree_lookup_get_block
0.25 ? 30% -0.1 0.10 ? 39% perf-profile.children.cycles-pp.iterate_bdevs
0.33 ? 28% -0.1 0.19 ? 20% perf-profile.children.cycles-pp.try_to_wake_up
0.26 ? 31% -0.1 0.13 ? 23% perf-profile.children.cycles-pp.schedule_idle
0.16 ? 36% -0.1 0.03 ?102% perf-profile.children.cycles-pp.__down
0.16 ? 35% -0.1 0.04 ? 73% perf-profile.children.cycles-pp.xfs_buf_lock
0.16 ? 36% -0.1 0.04 ? 73% perf-profile.children.cycles-pp.down
0.21 ? 39% -0.1 0.09 ? 52% perf-profile.children.cycles-pp.xfs_iunlink_remove
0.19 ? 28% -0.1 0.08 ? 43% perf-profile.children.cycles-pp.xfs_buf_item_release
0.21 ? 33% -0.1 0.10 ? 35% perf-profile.children.cycles-pp.xfs_difree_inobt
0.14 ? 16% -0.1 0.04 ?104% perf-profile.children.cycles-pp._xfs_trans_bjoin
0.18 ? 30% -0.1 0.08 ? 80% perf-profile.children.cycles-pp.wait_for_completion
0.15 ? 27% -0.1 0.06 ? 53% perf-profile.children.cycles-pp.up
0.15 ? 33% -0.1 0.06 ? 81% perf-profile.children.cycles-pp.xfs_difree_finobt
0.15 ? 27% -0.1 0.08 ? 19% perf-profile.children.cycles-pp.xfs_trans_alloc
0.10 ? 29% -0.1 0.04 ? 72% perf-profile.children.cycles-pp.xfs_log_reserve
0.04 ? 77% +0.1 0.10 ? 34% perf-profile.children.cycles-pp.balance_fair
0.05 ? 79% +0.1 0.15 ? 31% perf-profile.children.cycles-pp.smpboot_thread_fn
0.58 ? 16% +0.1 0.72 ? 11% perf-profile.children.cycles-pp.update_rq_clock
1.24 ? 8% +0.3 1.52 ? 4% perf-profile.children.cycles-pp.perf_mux_hrtimer_handler
8.31 ? 9% +2.1 10.40 ? 5% perf-profile.children.cycles-pp.__hrtimer_run_queues
1.30 ? 18% -1.0 0.30 ? 54% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
0.75 ? 21% -0.3 0.44 ? 20% perf-profile.self.cycles-pp.__percpu_counter_sum
0.43 ? 25% -0.3 0.16 ? 45% perf-profile.self.cycles-pp.down_read
0.72 ? 13% -0.2 0.47 ? 12% perf-profile.self.cycles-pp.update_sd_lb_stats
0.35 ? 15% +0.1 0.43 ? 13% perf-profile.self.cycles-pp.irqtime_account_irq
0.08 ? 60% +0.1 0.16 ? 18% perf-profile.self.cycles-pp.timerqueue_del
stress-ng.time.system_time
20 +----------------------------------------------------------------------+
| + |
18 |-+ + :: .+ |
| : : :: +.. .+ : |
16 |-+ : : : : : +. + + : + |
|: + :: : : + : + : : : : .. + |
14 |:+ + + : .+. .+ + : + : : : +.+ +. .+.|
| +.+ : +.+.+.+ +.+ + + + +.+ |
12 |-+ : : |
| :: |
10 |-+ :: |
| + |
8 |-+ O O O O O O O |
| O O O O O O O O O O O |
6 +----------------------------------------------------------------------+
stress-ng.time.percent_of_cpu_this_job_got
35 +----------------------------------------------------------------------+
| |
| + + + |
30 |-+ :: :: +: |
| : : :: +.. + + +.+ : + |
|: : :: : : : + : : : : .. : |
25 |:+ .+ + : : +. : +. : : : :.+ : |
| +.+ : +.+.+.+.+.+.+.+ + + + + +.+.+.+.|
20 |-+ : : |
| : : |
| :: |
15 |-+ : |
| + O O O O O O O |
| O O O O O O O O O O O O O O O O O O |
10 +----------------------------------------------------------------------+
stress-ng.time.voluntary_context_switches
260000 +------------------------------------------------------------------+
240000 |-+ + |
| + : +. + .+. .+. |
220000 |++.+.+ : + +. .+. + + +.+. .+.+ +.+ + +. .+. .+.|
200000 |-+ + +.+ +. .+. .+ + + + + + + |
| + + + |
180000 |-+ |
160000 |-+ |
140000 |-+ |
| |
120000 |-+ O |
100000 |-O O O O O |
| O O O O O O O |
80000 |-+ O O O O O O OO O O O O |
60000 +------------------------------------------------------------------+
stress-ng.mknod.ops
95000 +-------------------------------------------------------------------+
90000 |-+ .+. .+. .+. .+. |
|.+.+.+ + +.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+ + +. .+.+.+.|
85000 |-+ + |
80000 |-+ |
| |
75000 |-+ |
70000 |-+ |
65000 |-+ |
| |
60000 |-+ |
55000 |-+ |
| |
50000 |-O O O O O O O O O O O O O O O O O O O O O O O O O O O |
45000 +-------------------------------------------------------------------+
stress-ng.mknod.ops_per_sec
1600 +--------------------------------------------------------------------+
| .+. .+. .+ |
1500 |.+.+.+ +.+.+.+.+.+. .+.+.+.+.+..+.+.+.+.+.+.+.+.+ + + .+.+.+.|
1400 |-+ + +.+ |
| |
1300 |-+ |
1200 |-+ |
| |
1100 |-+ |
1000 |-+ |
| |
900 |-+ |
800 |-+ O O O O O O O O O O O O O O |
| O O O O O O O O O O O O O O |
700 +--------------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
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.
---
0DAY/LKP+ Test Infrastructure Open Source Technology Center
https://lists.01.org/hyperkitty/list/[email protected] Intel Corporation
Thanks,
Oliver Sang
Hi Dave,
Do you have time to look at this? Thanks.
On 8/4/2021 10:38 PM, kernel test robot wrote:
>
>
> Greeting,
>
> FYI, we noticed a -45.4% regression of stress-ng.mknod.ops_per_sec due to commit:
>
>
> commit: 2bf1ec0ff067ff8f692d261b29c713f3583f7e2a ("xfs: log forces imply data device cache flushes")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
>
>
> in testcase: stress-ng
> on test machine: 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 512G memory
> with following parameters:
>
> nr_threads: 10%
> disk: 1HDD
> testtime: 60s
> fs: xfs
> class: filesystem
> test: mknod
> cpufreq_governor: performance
> ucode: 0x5003006
>
>
>
>
> If you fix the issue, kindly add following tag
> Reported-by: kernel test robot <[email protected]>
>
>
> Details are as below:
> -------------------------------------------------------------------------------------------------->
>
>
> To reproduce:
>
> git clone https://github.com/intel/lkp-tests.git
> cd lkp-tests
> bin/lkp install job.yaml # job file is attached in this email
> bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
> bin/lkp run generated-yaml-file
>
> =========================================================================================
> class/compiler/cpufreq_governor/disk/fs/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime/ucode:
> filesystem/gcc-9/performance/1HDD/xfs/x86_64-rhel-8.3/10%/debian-10.4-x86_64-20200603.cgz/lkp-csl-2sp7/mknod/stress-ng/60s/0x5003006
>
> commit:
> 45eddb4140 ("xfs: factor out forced iclog flushes")
> 2bf1ec0ff0 ("xfs: log forces imply data device cache flushes")
>
> 45eddb414047c366 2bf1ec0ff067ff8f692d261b29c
> ---------------- ---------------------------
> %stddev %change %stddev
> \ | \
> 87135 -45.4% 47612 stress-ng.mknod.ops
> 1451 -45.4% 793.24 stress-ng.mknod.ops_per_sec
> 23.00 ? 7% -51.4% 11.17 ? 12% stress-ng.time.percent_of_cpu_this_job_got
> 13.80 ? 7% -50.7% 6.80 ? 8% stress-ng.time.system_time
> 211458 ? 2% -62.4% 79605 ? 14% stress-ng.time.voluntary_context_switches
> 0.30 ? 2% -0.1 0.18 mpstat.cpu.all.sys%
> 13993 ? 2% -38.1% 8659 softirqs.BLOCK
> 27747 -2.3% 27103 proc-vmstat.nr_slab_reclaimable
> 76223 ? 3% -57.3% 32548 ? 5% proc-vmstat.pgpgout
> 1170 ? 3% -57.3% 500.17 ? 5% vmstat.io.bo
> 10752 -47.7% 5624 ? 6% vmstat.system.cs
> 32820 -34.5% 21499 slabinfo.kmalloc-rcl-64.active_objs
> 512.67 -34.6% 335.50 slabinfo.kmalloc-rcl-64.active_slabs
> 32836 -34.5% 21508 slabinfo.kmalloc-rcl-64.num_objs
> 512.67 -34.6% 335.50 slabinfo.kmalloc-rcl-64.num_slabs
> 24913 ? 2% -42.8% 14251 interrupts.315:PCI-MSI.376832-edge.ahci[0000:00:17.0]
> 71844 ? 6% -19.9% 57564 ? 3% interrupts.CAL:Function_call_interrupts
> 206.50 ? 37% -42.9% 118.00 ? 41% interrupts.CPU1.NMI:Non-maskable_interrupts
> 206.50 ? 37% -42.9% 118.00 ? 41% interrupts.CPU1.PMI:Performance_monitoring_interrupts
> 173.17 ? 26% -31.7% 118.33 ? 38% interrupts.CPU2.NMI:Non-maskable_interrupts
> 173.17 ? 26% -31.7% 118.33 ? 38% interrupts.CPU2.PMI:Performance_monitoring_interrupts
> 189.83 ? 34% -40.6% 112.83 ? 25% interrupts.CPU49.NMI:Non-maskable_interrupts
> 189.83 ? 34% -40.6% 112.83 ? 25% interrupts.CPU49.PMI:Performance_monitoring_interrupts
> 181.67 ? 25% -38.3% 112.17 ? 24% interrupts.CPU50.NMI:Non-maskable_interrupts
> 181.67 ? 25% -38.3% 112.17 ? 24% interrupts.CPU50.PMI:Performance_monitoring_interrupts
> 1895 ? 16% -32.8% 1274 ? 20% interrupts.RES:Rescheduling_interrupts
> 3.127e+08 ? 5% -12.2% 2.746e+08 ? 3% perf-stat.i.branch-instructions
> 10683 -49.8% 5364 ? 6% perf-stat.i.context-switches
> 3.866e+08 ? 4% -14.2% 3.318e+08 ? 3% perf-stat.i.dTLB-loads
> 1.949e+08 ? 3% -14.7% 1.662e+08 ? 3% perf-stat.i.dTLB-stores
> 1.538e+09 ? 5% -12.4% 1.348e+09 ? 3% perf-stat.i.instructions
> 9.31 ? 4% -13.6% 8.04 ? 3% perf-stat.i.metric.M/sec
> 127426 ? 14% -32.6% 85864 ? 9% perf-stat.i.node-load-misses
> 3.078e+08 ? 5% -12.2% 2.702e+08 ? 3% perf-stat.ps.branch-instructions
> 10512 -49.8% 5279 ? 6% perf-stat.ps.context-switches
> 3.805e+08 ? 4% -14.2% 3.265e+08 ? 3% perf-stat.ps.dTLB-loads
> 1.918e+08 ? 3% -14.7% 1.635e+08 ? 3% perf-stat.ps.dTLB-stores
> 1.514e+09 ? 5% -12.4% 1.327e+09 ? 3% perf-stat.ps.instructions
> 125399 ? 14% -32.6% 84480 ? 9% perf-stat.ps.node-load-misses
> 9.563e+10 ? 6% -12.3% 8.383e+10 ? 3% perf-stat.total.instructions
> 8.31 ? 20% -3.9 4.45 ? 25% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe
> 8.30 ? 20% -3.9 4.45 ? 25% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 2.35 ? 19% -1.6 0.75 ? 25% perf-profile.calltrace.cycles-pp.__x64_sys_sync.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 2.35 ? 19% -1.6 0.75 ? 25% perf-profile.calltrace.cycles-pp.ksys_sync.__x64_sys_sync.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 2.08 ? 19% -1.6 0.50 ? 72% perf-profile.calltrace.cycles-pp.iterate_supers.ksys_sync.__x64_sys_sync.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 1.85 ? 25% -0.7 1.14 ? 31% perf-profile.calltrace.cycles-pp.do_mknodat.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 1.04 ? 27% -0.7 0.36 ?106% perf-profile.calltrace.cycles-pp.xfs_inactive_ifree.xfs_inactive.xfs_fs_destroy_inode.destroy_inode.do_unlinkat
> 1.08 ? 27% -0.6 0.46 ? 77% perf-profile.calltrace.cycles-pp.destroy_inode.do_unlinkat.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 1.05 ? 27% -0.6 0.45 ? 77% perf-profile.calltrace.cycles-pp.xfs_fs_destroy_inode.destroy_inode.do_unlinkat.do_syscall_64.entry_SYSCALL_64_after_hwframe
> 1.04 ? 27% -0.6 0.44 ? 78% perf-profile.calltrace.cycles-pp.xfs_inactive.xfs_fs_destroy_inode.destroy_inode.do_unlinkat.do_syscall_64
> 0.89 ? 17% -0.3 0.58 ? 9% perf-profile.calltrace.cycles-pp.worker_thread.kthread.ret_from_fork
> 1.21 ? 8% +0.2 1.45 ? 7% perf-profile.calltrace.cycles-pp.perf_mux_hrtimer_handler.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt
> 8.13 ? 9% +2.0 10.16 ? 6% perf-profile.calltrace.cycles-pp.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt
> 2.35 ? 19% -1.6 0.75 ? 25% perf-profile.children.cycles-pp.__x64_sys_sync
> 2.35 ? 19% -1.6 0.75 ? 25% perf-profile.children.cycles-pp.ksys_sync
> 2.09 ? 19% -1.4 0.65 ? 25% perf-profile.children.cycles-pp.iterate_supers
> 2.25 ? 18% -1.1 1.14 ? 26% perf-profile.children.cycles-pp._raw_spin_lock
> 1.40 ? 25% -1.1 0.31 ? 54% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
> 1.85 ? 25% -0.7 1.14 ? 31% perf-profile.children.cycles-pp.do_mknodat
> 1.08 ? 27% -0.5 0.55 ? 43% perf-profile.children.cycles-pp.destroy_inode
> 1.05 ? 27% -0.5 0.54 ? 42% perf-profile.children.cycles-pp.xfs_fs_destroy_inode
> 1.04 ? 27% -0.5 0.54 ? 43% perf-profile.children.cycles-pp.xfs_inactive
> 1.04 ? 27% -0.5 0.53 ? 44% perf-profile.children.cycles-pp.xfs_inactive_ifree
> 0.93 ? 21% -0.5 0.44 ? 24% perf-profile.children.cycles-pp.__schedule
> 0.49 ? 25% -0.4 0.11 ? 76% perf-profile.children.cycles-pp.pick_next_task_fair
> 1.05 ? 20% -0.4 0.69 ? 13% perf-profile.children.cycles-pp.find_busiest_group
> 0.66 ? 19% -0.3 0.32 ? 30% perf-profile.children.cycles-pp.schedule
> 1.00 ? 20% -0.3 0.65 ? 13% perf-profile.children.cycles-pp.update_sd_lb_stats
> 0.60 ? 20% -0.3 0.29 ? 31% perf-profile.children.cycles-pp.xfs_ifree
> 0.89 ? 17% -0.3 0.58 ? 9% perf-profile.children.cycles-pp.worker_thread
> 0.44 ? 26% -0.3 0.16 ? 45% perf-profile.children.cycles-pp.newidle_balance
> 0.49 ? 39% -0.3 0.22 ? 35% perf-profile.children.cycles-pp.xfs_fs_sync_fs
> 0.40 ? 49% -0.2 0.17 ? 29% perf-profile.children.cycles-pp.xfs_log_force
> 0.31 ? 29% -0.2 0.11 ? 56% perf-profile.children.cycles-pp.schedule_timeout
> 0.24 ? 60% -0.2 0.06 ? 50% perf-profile.children.cycles-pp.xfs_inobt_get_rec
> 0.38 ? 19% -0.2 0.21 ? 30% perf-profile.children.cycles-pp.xfs_btree_lookup
> 0.42 ? 14% -0.2 0.26 ? 35% perf-profile.children.cycles-pp.xfs_check_agi_freecount
> 0.30 ? 27% -0.2 0.14 ? 37% perf-profile.children.cycles-pp.xfs_btree_lookup_get_block
> 0.25 ? 30% -0.1 0.10 ? 39% perf-profile.children.cycles-pp.iterate_bdevs
> 0.33 ? 28% -0.1 0.19 ? 20% perf-profile.children.cycles-pp.try_to_wake_up
> 0.26 ? 31% -0.1 0.13 ? 23% perf-profile.children.cycles-pp.schedule_idle
> 0.16 ? 36% -0.1 0.03 ?102% perf-profile.children.cycles-pp.__down
> 0.16 ? 35% -0.1 0.04 ? 73% perf-profile.children.cycles-pp.xfs_buf_lock
> 0.16 ? 36% -0.1 0.04 ? 73% perf-profile.children.cycles-pp.down
> 0.21 ? 39% -0.1 0.09 ? 52% perf-profile.children.cycles-pp.xfs_iunlink_remove
> 0.19 ? 28% -0.1 0.08 ? 43% perf-profile.children.cycles-pp.xfs_buf_item_release
> 0.21 ? 33% -0.1 0.10 ? 35% perf-profile.children.cycles-pp.xfs_difree_inobt
> 0.14 ? 16% -0.1 0.04 ?104% perf-profile.children.cycles-pp._xfs_trans_bjoin
> 0.18 ? 30% -0.1 0.08 ? 80% perf-profile.children.cycles-pp.wait_for_completion
> 0.15 ? 27% -0.1 0.06 ? 53% perf-profile.children.cycles-pp.up
> 0.15 ? 33% -0.1 0.06 ? 81% perf-profile.children.cycles-pp.xfs_difree_finobt
> 0.15 ? 27% -0.1 0.08 ? 19% perf-profile.children.cycles-pp.xfs_trans_alloc
> 0.10 ? 29% -0.1 0.04 ? 72% perf-profile.children.cycles-pp.xfs_log_reserve
> 0.04 ? 77% +0.1 0.10 ? 34% perf-profile.children.cycles-pp.balance_fair
> 0.05 ? 79% +0.1 0.15 ? 31% perf-profile.children.cycles-pp.smpboot_thread_fn
> 0.58 ? 16% +0.1 0.72 ? 11% perf-profile.children.cycles-pp.update_rq_clock
> 1.24 ? 8% +0.3 1.52 ? 4% perf-profile.children.cycles-pp.perf_mux_hrtimer_handler
> 8.31 ? 9% +2.1 10.40 ? 5% perf-profile.children.cycles-pp.__hrtimer_run_queues
> 1.30 ? 18% -1.0 0.30 ? 54% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
> 0.75 ? 21% -0.3 0.44 ? 20% perf-profile.self.cycles-pp.__percpu_counter_sum
> 0.43 ? 25% -0.3 0.16 ? 45% perf-profile.self.cycles-pp.down_read
> 0.72 ? 13% -0.2 0.47 ? 12% perf-profile.self.cycles-pp.update_sd_lb_stats
> 0.35 ? 15% +0.1 0.43 ? 13% perf-profile.self.cycles-pp.irqtime_account_irq
> 0.08 ? 60% +0.1 0.16 ? 18% perf-profile.self.cycles-pp.timerqueue_del
>
>
>
> stress-ng.time.system_time
>
> 20 +----------------------------------------------------------------------+
> | + |
> 18 |-+ + :: .+ |
> | : : :: +.. .+ : |
> 16 |-+ : : : : : +. + + : + |
> |: + :: : : + : + : : : : .. + |
> 14 |:+ + + : .+. .+ + : + : : : +.+ +. .+.|
> | +.+ : +.+.+.+ +.+ + + + +.+ |
> 12 |-+ : : |
> | :: |
> 10 |-+ :: |
> | + |
> 8 |-+ O O O O O O O |
> | O O O O O O O O O O O |
> 6 +----------------------------------------------------------------------+
>
>
> stress-ng.time.percent_of_cpu_this_job_got
>
> 35 +----------------------------------------------------------------------+
> | |
> | + + + |
> 30 |-+ :: :: +: |
> | : : :: +.. + + +.+ : + |
> |: : :: : : : + : : : : .. : |
> 25 |:+ .+ + : : +. : +. : : : :.+ : |
> | +.+ : +.+.+.+.+.+.+.+ + + + + +.+.+.+.|
> 20 |-+ : : |
> | : : |
> | :: |
> 15 |-+ : |
> | + O O O O O O O |
> | O O O O O O O O O O O O O O O O O O |
> 10 +----------------------------------------------------------------------+
>
>
> stress-ng.time.voluntary_context_switches
>
> 260000 +------------------------------------------------------------------+
> 240000 |-+ + |
> | + : +. + .+. .+. |
> 220000 |++.+.+ : + +. .+. + + +.+. .+.+ +.+ + +. .+. .+.|
> 200000 |-+ + +.+ +. .+. .+ + + + + + + |
> | + + + |
> 180000 |-+ |
> 160000 |-+ |
> 140000 |-+ |
> | |
> 120000 |-+ O |
> 100000 |-O O O O O |
> | O O O O O O O |
> 80000 |-+ O O O O O O OO O O O O |
> 60000 +------------------------------------------------------------------+
>
>
> stress-ng.mknod.ops
>
> 95000 +-------------------------------------------------------------------+
> 90000 |-+ .+. .+. .+. .+. |
> |.+.+.+ + +.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+ + +. .+.+.+.|
> 85000 |-+ + |
> 80000 |-+ |
> | |
> 75000 |-+ |
> 70000 |-+ |
> 65000 |-+ |
> | |
> 60000 |-+ |
> 55000 |-+ |
> | |
> 50000 |-O O O O O O O O O O O O O O O O O O O O O O O O O O O |
> 45000 +-------------------------------------------------------------------+
>
>
> stress-ng.mknod.ops_per_sec
>
> 1600 +--------------------------------------------------------------------+
> | .+. .+. .+ |
> 1500 |.+.+.+ +.+.+.+.+.+. .+.+.+.+.+..+.+.+.+.+.+.+.+.+ + + .+.+.+.|
> 1400 |-+ + +.+ |
> | |
> 1300 |-+ |
> 1200 |-+ |
> | |
> 1100 |-+ |
> 1000 |-+ |
> | |
> 900 |-+ |
> 800 |-+ O O O O O O O O O O O O O O |
> | O O O O O O O O O O O O O O |
> 700 +--------------------------------------------------------------------+
>
>
> [*] bisect-good sample
> [O] bisect-bad sample
>
>
>
> 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.
>
>
> ---
> 0DAY/LKP+ Test Infrastructure Open Source Technology Center
> https://lists.01.org/hyperkitty/list/[email protected] Intel Corporation
>
> Thanks,
> Oliver Sang
>
--
Zhengjun Xing
Hi Dave,
On 9/3/2021 3:43 PM, Xing Zhengjun wrote:
> Hi Dave,
>
> Do you have time to look at this? Thanks.
>
> On 8/4/2021 10:38 PM, kernel test robot wrote:
>>
>>
>> Greeting,
>>
>> FYI, we noticed a -45.4% regression of stress-ng.mknod.ops_per_sec due to commit:
>>
>>
>> commit: 2bf1ec0ff067ff8f692d261b29c713f3583f7e2a ("xfs: log forces imply data device cache flushes")
>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
We noticed the commit 2bf1ec0ff067ff8f692d261b29c713f3583f7e2a is actually a
fix to the race introduced by commit eef983ffeae7a1cdde8c3338155ae2dd74b8621b.
Then we did a test for stress-ng.mknod.ops_per_sec between commit:
eef983ffeae7a1cdde8c3338155ae2dd74b8621b
and its parent commit:
3468bb1ca6e8840789e13c7b9d8b0c556b4fbe79
We got:
commit:
3468bb1ca6e8840789e13c7b9d8b0c556b4fbe79
eef983ffeae7a1cdde8c3338155ae2dd74b8621b
3468bb1ca6e88407 eef983ffeae7a1cdde8c3338155
---------------- ---------------------------
fail:runs %reproduction fail:runs
| | |
112:1 456% 117:1 dmesg.timestamp:last
103:1 553% 109:1 kmsg.timestamp:last
1:1 0% 1:1 pmeter.pmeter.fail
1:1 0% 1:1 stress-ng.mknod.pass
%stddev %change %stddev
\ | \
47979 +80.6% 86655 stress-ng.mknod.ops
799.29 +80.6% 1443 stress-ng.mknod.ops_per_sec
It's like commit eef983ffeae7a1cdde8c3338155ae2dd74b8621b bought 80%
performance gain. But it introduced race issue.
Commit 2bf1ec0ff067ff8f692d261b29c713f3583f7e2a fixed the race issue
and lost about 50% performance gain. Suppose we still have 30%
performance gain with race issue fixed. So it's still a good change.
We will close this report.
Regards
Yin, Fengwei
>>
>>
>> in testcase: stress-ng
>> on test machine: 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 512G memory
>> with following parameters:
>>
>> nr_threads: 10%
>> disk: 1HDD
>> testtime: 60s
>> fs: xfs
>> class: filesystem
>> test: mknod
>> cpufreq_governor: performance
>> ucode: 0x5003006
>>
>>
>>
>>
>> If you fix the issue, kindly add following tag
>> Reported-by: kernel test robot <[email protected]>
>>
>>
>> Details are as below:
>> -------------------------------------------------------------------------------------------------->
>>
>>
>> To reproduce:
>>
>> git clone https://github.com/intel/lkp-tests.git
>> cd lkp-tests
>> bin/lkp install job.yaml # job file is attached in this email
>> bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
>> bin/lkp run generated-yaml-file
>>
>> =========================================================================================
>> class/compiler/cpufreq_governor/disk/fs/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime/ucode:
>> filesystem/gcc-9/performance/1HDD/xfs/x86_64-rhel-8.3/10%/debian-10.4-x86_64-20200603.cgz/lkp-csl-2sp7/mknod/stress-ng/60s/0x5003006
>>
>> commit:
>> 45eddb4140 ("xfs: factor out forced iclog flushes")
>> 2bf1ec0ff0 ("xfs: log forces imply data device cache flushes")
>>
>> 45eddb414047c366 2bf1ec0ff067ff8f692d261b29c
>> ---------------- ---------------------------
>> %stddev %change %stddev
>> \ | \
>> 87135 -45.4% 47612 stress-ng.mknod.ops
>> 1451 -45.4% 793.24 stress-ng.mknod.ops_per_sec
>> 23.00 ± 7% -51.4% 11.17 ± 12% stress-ng.time.percent_of_cpu_this_job_got
>> 13.80 ± 7% -50.7% 6.80 ± 8% stress-ng.time.system_time
>> 211458 ± 2% -62.4% 79605 ± 14% stress-ng.time.voluntary_context_switches
>> 0.30 ± 2% -0.1 0.18 mpstat.cpu.all.sys%
>> 13993 ± 2% -38.1% 8659 softirqs.BLOCK
>> 27747 -2.3% 27103 proc-vmstat.nr_slab_reclaimable
>> 76223 ± 3% -57.3% 32548 ± 5% proc-vmstat.pgpgout
>> 1170 ± 3% -57.3% 500.17 ± 5% vmstat.io.bo
>> 10752 -47.7% 5624 ± 6% vmstat.system.cs
>> 32820 -34.5% 21499 slabinfo.kmalloc-rcl-64.active_objs
>> 512.67 -34.6% 335.50 slabinfo.kmalloc-rcl-64.active_slabs
>> 32836 -34.5% 21508 slabinfo.kmalloc-rcl-64.num_objs
>> 512.67 -34.6% 335.50 slabinfo.kmalloc-rcl-64.num_slabs
>> 24913 ± 2% -42.8% 14251 interrupts.315:PCI-MSI.376832-edge.ahci[0000:00:17.0]
>> 71844 ± 6% -19.9% 57564 ± 3% interrupts.CAL:Function_call_interrupts
>> 206.50 ± 37% -42.9% 118.00 ± 41% interrupts.CPU1.NMI:Non-maskable_interrupts
>> 206.50 ± 37% -42.9% 118.00 ± 41% interrupts.CPU1.PMI:Performance_monitoring_interrupts
>> 173.17 ± 26% -31.7% 118.33 ± 38% interrupts.CPU2.NMI:Non-maskable_interrupts
>> 173.17 ± 26% -31.7% 118.33 ± 38% interrupts.CPU2.PMI:Performance_monitoring_interrupts
>> 189.83 ± 34% -40.6% 112.83 ± 25% interrupts.CPU49.NMI:Non-maskable_interrupts
>> 189.83 ± 34% -40.6% 112.83 ± 25% interrupts.CPU49.PMI:Performance_monitoring_interrupts
>> 181.67 ± 25% -38.3% 112.17 ± 24% interrupts.CPU50.NMI:Non-maskable_interrupts
>> 181.67 ± 25% -38.3% 112.17 ± 24% interrupts.CPU50.PMI:Performance_monitoring_interrupts
>> 1895 ± 16% -32.8% 1274 ± 20% interrupts.RES:Rescheduling_interrupts
>> 3.127e+08 ± 5% -12.2% 2.746e+08 ± 3% perf-stat.i.branch-instructions
>> 10683 -49.8% 5364 ± 6% perf-stat.i.context-switches
>> 3.866e+08 ± 4% -14.2% 3.318e+08 ± 3% perf-stat.i.dTLB-loads
>> 1.949e+08 ± 3% -14.7% 1.662e+08 ± 3% perf-stat.i.dTLB-stores
>> 1.538e+09 ± 5% -12.4% 1.348e+09 ± 3% perf-stat.i.instructions
>> 9.31 ± 4% -13.6% 8.04 ± 3% perf-stat.i.metric.M/sec
>> 127426 ± 14% -32.6% 85864 ± 9% perf-stat.i.node-load-misses
>> 3.078e+08 ± 5% -12.2% 2.702e+08 ± 3% perf-stat.ps.branch-instructions
>> 10512 -49.8% 5279 ± 6% perf-stat.ps.context-switches
>> 3.805e+08 ± 4% -14.2% 3.265e+08 ± 3% perf-stat.ps.dTLB-loads
>> 1.918e+08 ± 3% -14.7% 1.635e+08 ± 3% perf-stat.ps.dTLB-stores
>> 1.514e+09 ± 5% -12.4% 1.327e+09 ± 3% perf-stat.ps.instructions
>> 125399 ± 14% -32.6% 84480 ± 9% perf-stat.ps.node-load-misses
>> 9.563e+10 ± 6% -12.3% 8.383e+10 ± 3% perf-stat.total.instructions
>> 8.31 ± 20% -3.9 4.45 ± 25% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe
>> 8.30 ± 20% -3.9 4.45 ± 25% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe
>> 2.35 ± 19% -1.6 0.75 ± 25% perf-profile.calltrace.cycles-pp.__x64_sys_sync.do_syscall_64.entry_SYSCALL_64_after_hwframe
>> 2.35 ± 19% -1.6 0.75 ± 25% perf-profile.calltrace.cycles-pp.ksys_sync.__x64_sys_sync.do_syscall_64.entry_SYSCALL_64_after_hwframe
>> 2.08 ± 19% -1.6 0.50 ± 72% perf-profile.calltrace.cycles-pp.iterate_supers.ksys_sync.__x64_sys_sync.do_syscall_64.entry_SYSCALL_64_after_hwframe
>> 1.85 ± 25% -0.7 1.14 ± 31% perf-profile.calltrace.cycles-pp.do_mknodat.do_syscall_64.entry_SYSCALL_64_after_hwframe
>> 1.04 ± 27% -0.7 0.36 ±106% perf-profile.calltrace.cycles-pp.xfs_inactive_ifree.xfs_inactive.xfs_fs_destroy_inode.destroy_inode.do_unlinkat
>> 1.08 ± 27% -0.6 0.46 ± 77% perf-profile.calltrace.cycles-pp.destroy_inode.do_unlinkat.do_syscall_64.entry_SYSCALL_64_after_hwframe
>> 1.05 ± 27% -0.6 0.45 ± 77% perf-profile.calltrace.cycles-pp.xfs_fs_destroy_inode.destroy_inode.do_unlinkat.do_syscall_64.entry_SYSCALL_64_after_hwframe
>> 1.04 ± 27% -0.6 0.44 ± 78% perf-profile.calltrace.cycles-pp.xfs_inactive.xfs_fs_destroy_inode.destroy_inode.do_unlinkat.do_syscall_64
>> 0.89 ± 17% -0.3 0.58 ± 9% perf-profile.calltrace.cycles-pp.worker_thread.kthread.ret_from_fork
>> 1.21 ± 8% +0.2 1.45 ± 7% perf-profile.calltrace.cycles-pp.perf_mux_hrtimer_handler.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt
>> 8.13 ± 9% +2.0 10.16 ± 6% perf-profile.calltrace.cycles-pp.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt
>> 2.35 ± 19% -1.6 0.75 ± 25% perf-profile.children.cycles-pp.__x64_sys_sync
>> 2.35 ± 19% -1.6 0.75 ± 25% perf-profile.children.cycles-pp.ksys_sync
>> 2.09 ± 19% -1.4 0.65 ± 25% perf-profile.children.cycles-pp.iterate_supers
>> 2.25 ± 18% -1.1 1.14 ± 26% perf-profile.children.cycles-pp._raw_spin_lock
>> 1.40 ± 25% -1.1 0.31 ± 54% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
>> 1.85 ± 25% -0.7 1.14 ± 31% perf-profile.children.cycles-pp.do_mknodat
>> 1.08 ± 27% -0.5 0.55 ± 43% perf-profile.children.cycles-pp.destroy_inode
>> 1.05 ± 27% -0.5 0.54 ± 42% perf-profile.children.cycles-pp.xfs_fs_destroy_inode
>> 1.04 ± 27% -0.5 0.54 ± 43% perf-profile.children.cycles-pp.xfs_inactive
>> 1.04 ± 27% -0.5 0.53 ± 44% perf-profile.children.cycles-pp.xfs_inactive_ifree
>> 0.93 ± 21% -0.5 0.44 ± 24% perf-profile.children.cycles-pp.__schedule
>> 0.49 ± 25% -0.4 0.11 ± 76% perf-profile.children.cycles-pp.pick_next_task_fair
>> 1.05 ± 20% -0.4 0.69 ± 13% perf-profile.children.cycles-pp.find_busiest_group
>> 0.66 ± 19% -0.3 0.32 ± 30% perf-profile.children.cycles-pp.schedule
>> 1.00 ± 20% -0.3 0.65 ± 13% perf-profile.children.cycles-pp.update_sd_lb_stats
>> 0.60 ± 20% -0.3 0.29 ± 31% perf-profile.children.cycles-pp.xfs_ifree
>> 0.89 ± 17% -0.3 0.58 ± 9% perf-profile.children.cycles-pp.worker_thread
>> 0.44 ± 26% -0.3 0.16 ± 45% perf-profile.children.cycles-pp.newidle_balance
>> 0.49 ± 39% -0.3 0.22 ± 35% perf-profile.children.cycles-pp.xfs_fs_sync_fs
>> 0.40 ± 49% -0.2 0.17 ± 29% perf-profile.children.cycles-pp.xfs_log_force
>> 0.31 ± 29% -0.2 0.11 ± 56% perf-profile.children.cycles-pp.schedule_timeout
>> 0.24 ± 60% -0.2 0.06 ± 50% perf-profile.children.cycles-pp.xfs_inobt_get_rec
>> 0.38 ± 19% -0.2 0.21 ± 30% perf-profile.children.cycles-pp.xfs_btree_lookup
>> 0.42 ± 14% -0.2 0.26 ± 35% perf-profile.children.cycles-pp.xfs_check_agi_freecount
>> 0.30 ± 27% -0.2 0.14 ± 37% perf-profile.children.cycles-pp.xfs_btree_lookup_get_block
>> 0.25 ± 30% -0.1 0.10 ± 39% perf-profile.children.cycles-pp.iterate_bdevs
>> 0.33 ± 28% -0.1 0.19 ± 20% perf-profile.children.cycles-pp.try_to_wake_up
>> 0.26 ± 31% -0.1 0.13 ± 23% perf-profile.children.cycles-pp.schedule_idle
>> 0.16 ± 36% -0.1 0.03 ±102% perf-profile.children.cycles-pp.__down
>> 0.16 ± 35% -0.1 0.04 ± 73% perf-profile.children.cycles-pp.xfs_buf_lock
>> 0.16 ± 36% -0.1 0.04 ± 73% perf-profile.children.cycles-pp.down
>> 0.21 ± 39% -0.1 0.09 ± 52% perf-profile.children.cycles-pp.xfs_iunlink_remove
>> 0.19 ± 28% -0.1 0.08 ± 43% perf-profile.children.cycles-pp.xfs_buf_item_release
>> 0.21 ± 33% -0.1 0.10 ± 35% perf-profile.children.cycles-pp.xfs_difree_inobt
>> 0.14 ± 16% -0.1 0.04 ±104% perf-profile.children.cycles-pp._xfs_trans_bjoin
>> 0.18 ± 30% -0.1 0.08 ± 80% perf-profile.children.cycles-pp.wait_for_completion
>> 0.15 ± 27% -0.1 0.06 ± 53% perf-profile.children.cycles-pp.up
>> 0.15 ± 33% -0.1 0.06 ± 81% perf-profile.children.cycles-pp.xfs_difree_finobt
>> 0.15 ± 27% -0.1 0.08 ± 19% perf-profile.children.cycles-pp.xfs_trans_alloc
>> 0.10 ± 29% -0.1 0.04 ± 72% perf-profile.children.cycles-pp.xfs_log_reserve
>> 0.04 ± 77% +0.1 0.10 ± 34% perf-profile.children.cycles-pp.balance_fair
>> 0.05 ± 79% +0.1 0.15 ± 31% perf-profile.children.cycles-pp.smpboot_thread_fn
>> 0.58 ± 16% +0.1 0.72 ± 11% perf-profile.children.cycles-pp.update_rq_clock
>> 1.24 ± 8% +0.3 1.52 ± 4% perf-profile.children.cycles-pp.perf_mux_hrtimer_handler
>> 8.31 ± 9% +2.1 10.40 ± 5% perf-profile.children.cycles-pp.__hrtimer_run_queues
>> 1.30 ± 18% -1.0 0.30 ± 54% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
>> 0.75 ± 21% -0.3 0.44 ± 20% perf-profile.self.cycles-pp.__percpu_counter_sum
>> 0.43 ± 25% -0.3 0.16 ± 45% perf-profile.self.cycles-pp.down_read
>> 0.72 ± 13% -0.2 0.47 ± 12% perf-profile.self.cycles-pp.update_sd_lb_stats
>> 0.35 ± 15% +0.1 0.43 ± 13% perf-profile.self.cycles-pp.irqtime_account_irq
>> 0.08 ± 60% +0.1 0.16 ± 18% perf-profile.self.cycles-pp.timerqueue_del
>>
>>
>> stress-ng.time.system_time
>> 20 +----------------------------------------------------------------------+
>> | + |
>> 18 |-+ + :: .+ |
>> | : : :: +.. .+ : |
>> 16 |-+ : : : : : +. + + : + |
>> |: + :: : : + : + : : : : .. + |
>> 14 |:+ + + : .+. .+ + : + : : : +.+ +. .+.|
>> | +.+ : +.+.+.+ +.+ + + + +.+ |
>> 12 |-+ : : |
>> | :: |
>> 10 |-+ :: |
>> | + |
>> 8 |-+ O O O O O O O |
>> | O O O O O O O O O O O |
>> 6 +----------------------------------------------------------------------+
>> stress-ng.time.percent_of_cpu_this_job_got
>> 35 +----------------------------------------------------------------------+
>> | |
>> | + + + |
>> 30 |-+ :: :: +: |
>> | : : :: +.. + + +.+ : + |
>> |: : :: : : : + : : : : .. : |
>> 25 |:+ .+ + : : +. : +. : : : :.+ : |
>> | +.+ : +.+.+.+.+.+.+.+ + + + + +.+.+.+.|
>> 20 |-+ : : |
>> | : : |
>> | :: |
>> 15 |-+ : |
>> | + O O O O O O O |
>> | O O O O O O O O O O O O O O O O O O |
>> 10 +----------------------------------------------------------------------+
>> stress-ng.time.voluntary_context_switches
>> 260000 +------------------------------------------------------------------+
>> 240000 |-+ + |
>> | + : +. + .+. .+. |
>> 220000 |++.+.+ : + +. .+. + + +.+. .+.+ +.+ + +. .+. .+.|
>> 200000 |-+ + +.+ +. .+. .+ + + + + + + |
>> | + + + |
>> 180000 |-+ |
>> 160000 |-+ |
>> 140000 |-+ |
>> | |
>> 120000 |-+ O |
>> 100000 |-O O O O O |
>> | O O O O O O O |
>> 80000 |-+ O O O O O O OO O O O O |
>> 60000 +------------------------------------------------------------------+
>> stress-ng.mknod.ops
>> 95000 +-------------------------------------------------------------------+
>> 90000 |-+ .+. .+. .+. .+. |
>> |.+.+.+ + +.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+ + +. .+.+.+.|
>> 85000 |-+ + |
>> 80000 |-+ |
>> | |
>> 75000 |-+ |
>> 70000 |-+ |
>> 65000 |-+ |
>> | |
>> 60000 |-+ |
>> 55000 |-+ |
>> | |
>> 50000 |-O O O O O O O O O O O O O O O O O O O O O O O O O O O |
>> 45000 +-------------------------------------------------------------------+
>> stress-ng.mknod.ops_per_sec
>> 1600 +--------------------------------------------------------------------+
>> | .+. .+. .+ |
>> 1500 |.+.+.+ +.+.+.+.+.+. .+.+.+.+.+..+.+.+.+.+.+.+.+.+ + + .+.+.+.|
>> 1400 |-+ + +.+ |
>> | |
>> 1300 |-+ |
>> 1200 |-+ |
>> | |
>> 1100 |-+ |
>> 1000 |-+ |
>> | |
>> 900 |-+ |
>> 800 |-+ O O O O O O O O O O O O O O |
>> | O O O O O O O O O O O O O O |
>> 700 +--------------------------------------------------------------------+
>> [*] bisect-good sample
>> [O] bisect-bad sample
>>
>>
>>
>> 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.
>>
>>
>> ---
>> 0DAY/LKP+ Test Infrastructure Open Source Technology Center
>> https://lists.01.org/hyperkitty/list/[email protected] Intel Corporation
>>
>> Thanks,
>> Oliver Sang
>>
>