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Date: Sun, 9 Oct 2016 13:57:57 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Matt Fleming <matt@...eblueprint.co.uk>
Cc: Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
Matt Fleming <matt@...eblueprint.co.uk>,
Mike Galbraith <umgwanakikbuti@...il.com>,
Yuyang Du <yuyang.du@...el.com>,
Vincent Guittot <vincent.guittot@...aro.org>,
Dietmar Eggemann <dietmar.eggemann@....com>, lkp@...org
Subject: [lkp] [sched/fair] f54c5d4e28: hackbench.throughput 10.6%
improvement
FYI, we noticed a 10.6% improvement of hackbench.throughput due to commit:
commit f54c5d4e28da93ffb92c40f84f6f6e6db41d652e ("sched/fair: Do not decay new task load on first enqueue")
https://github.com/0day-ci/linux Matt-Fleming/sched-fair-Do-not-decay-new-task-load-on-first-enqueue/20160924-014929
in testcase: hackbench
on test machine: 32 threads Intel(R) Xeon(R) CPU E5-2680 0 @ 2.70GHz with 32G memory
with following parameters:
cpuset.mems: 0-$((nr_node-1))
cpuset.cpus: 0-$((nr_cpu-1))
nr_threads: 1600%
mode: threads
ipc: pipe
cpufreq_governor: performance
Hackbench is both a benchmark and a stress test for the Linux kernel scheduler.
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.
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
=========================================================================================
compiler/cpufreq_governor/cpuset.cpus/cpuset.mems/ipc/kconfig/mode/nr_threads/rootfs/tbox_group/testcase:
gcc-6/performance/0-$((nr_cpu-1))/0-$((nr_node-1))/pipe/x86_64-kexec/threads/1600%/debian-x86_64-2016-08-31.cgz/lkp-snb01/hackbench
commit:
c1fad9ef7e ("objtool: Add do_task_dead() to global noreturn list")
f54c5d4e28 ("sched/fair: Do not decay new task load on first enqueue")
c1fad9ef7ed14aad f54c5d4e28da93ffb92c40f84f
---------------- --------------------------
%stddev %change %stddev
\ | \
248098 ± 1% +10.6% 274415 ± 0% hackbench.throughput
8.706e+08 ± 1% +21.7% 1.06e+09 ± 0% hackbench.time.involuntary_context_switches
1674142 ± 1% +10.2% 1844981 ± 0% hackbench.time.minor_page_faults
1547 ± 1% +9.7% 1696 ± 0% hackbench.time.user_time
2.287e+09 ± 2% -11.8% 2.017e+09 ± 0% hackbench.time.voluntary_context_switches
5198633 ± 9% -24.8% 3908585 ± 17% interrupts.CAL:Function_call_interrupts
217794 ± 2% -14.7% 185716 ± 1% meminfo.KernelStack
105989 ± 8% -20.7% 84099 ± 14% numa-meminfo.node1.KernelStack
1237200 ± 0% -15.9% 1040658 ± 2% softirqs.RCU
540161 ± 4% -53.0% 254100 ± 0% softirqs.SCHED
1569 ± 2% +11.6% 1751 ± 2% vmstat.procs.r
290364 ± 7% -67.9% 93107 ± 1% vmstat.system.in
1.34 ± 2% +88.1% 2.52 ± 0% turbostat.CPU%c1
2.61 ± 4% -34.3% 1.71 ± 1% turbostat.CPU%c6
0.19 ± 14% +61.3% 0.30 ± 19% turbostat.Pkg%pc6
35103736 ± 5% -65.8% 11992857 ± 1% cpuidle.C1.usage
197809 ± 3% +189.3% 572238 ± 0% cpuidle.C2.usage
57732567 ± 10% -92.4% 4375330 ± 24% cpuidle.POLL.time
185806 ± 5% -66.1% 63025 ± 1% cpuidle.POLL.usage
17524006 ± 2% +11.3% 19495992 ± 2% numa-numastat.node0.local_node
17524039 ± 2% +11.3% 19496020 ± 2% numa-numastat.node0.numa_hit
15305415 ± 6% +25.0% 19128452 ± 2% numa-numastat.node1.local_node
15305434 ± 6% +25.0% 19128469 ± 2% numa-numastat.node1.numa_hit
8687240 ± 9% +15.3% 10019684 ± 3% numa-vmstat.node0.numa_hit
8687217 ± 9% +15.3% 10019664 ± 3% numa-vmstat.node0.numa_local
8239375 ± 3% +19.6% 9854917 ± 2% numa-vmstat.node1.numa_hit
8239361 ± 3% +19.6% 9854904 ± 2% numa-vmstat.node1.numa_local
217952 ± 1% -14.9% 185402 ± 0% proc-vmstat.nr_kernel_stack
32832102 ± 2% +17.6% 38626359 ± 0% proc-vmstat.numa_hit
32832049 ± 2% +17.6% 38626314 ± 0% proc-vmstat.numa_local
36089336 ± 2% +16.9% 42180382 ± 0% proc-vmstat.pgalloc_normal
2547440 ± 1% -11.6% 2252216 ± 0% proc-vmstat.pgfault
36004406 ± 2% +16.9% 42080130 ± 0% proc-vmstat.pgfree
741.00 ± 11% -28.9% 526.50 ± 11% slabinfo.bdev_cache.active_objs
741.00 ± 11% -28.9% 526.50 ± 11% slabinfo.bdev_cache.num_objs
858.00 ± 10% -28.5% 613.25 ± 10% slabinfo.file_lock_cache.active_objs
858.00 ± 10% -28.5% 613.25 ± 10% slabinfo.file_lock_cache.num_objs
23908 ± 2% -8.5% 21874 ± 4% slabinfo.kmalloc-192.active_objs
24087 ± 2% -8.5% 22049 ± 4% slabinfo.kmalloc-192.num_objs
33276 ± 3% -11.0% 29622 ± 3% slabinfo.kmalloc-256.active_objs
33566 ± 3% -10.8% 29930 ± 3% slabinfo.kmalloc-256.num_objs
14696 ± 2% -14.8% 12527 ± 1% slabinfo.task_struct.active_objs
1724 ± 2% -11.9% 1518 ± 1% slabinfo.task_struct.active_slabs
15523 ± 2% -11.9% 13674 ± 1% slabinfo.task_struct.num_objs
1724 ± 2% -11.9% 1518 ± 1% slabinfo.task_struct.num_slabs
60659 ± 0% -11.6% 53599 ± 1% slabinfo.vm_area_struct.active_objs
1381 ± 0% -11.6% 1220 ± 1% slabinfo.vm_area_struct.active_slabs
60797 ± 0% -11.6% 53735 ± 1% slabinfo.vm_area_struct.num_objs
1381 ± 0% -11.6% 1220 ± 1% slabinfo.vm_area_struct.num_slabs
8.002e+12 ± 0% +4.2% 8.338e+12 ± 0% perf-stat.branch-instructions
0.44 ± 2% -17.7% 0.36 ± 0% perf-stat.branch-miss-rate%
3.526e+10 ± 2% -14.2% 3.026e+10 ± 0% perf-stat.branch-misses
6.90 ± 5% +68.6% 11.64 ± 0% perf-stat.cache-miss-rate%
1.28e+10 ± 2% +30.1% 1.665e+10 ± 0% perf-stat.cache-misses
1.856e+11 ± 2% -22.9% 1.43e+11 ± 0% perf-stat.cache-references
85798578 ± 6% -59.5% 34720971 ± 3% perf-stat.cpu-migrations
0.41 ± 4% -52.4% 0.19 ± 14% perf-stat.dTLB-load-miss-rate%
5.162e+10 ± 4% -49.8% 2.592e+10 ± 14% perf-stat.dTLB-load-misses
1.263e+13 ± 0% +5.7% 1.335e+13 ± 0% perf-stat.dTLB-loads
0.23 ± 6% -76.3% 0.05 ± 5% perf-stat.dTLB-store-miss-rate%
2.014e+10 ± 5% -74.8% 5.067e+09 ± 5% perf-stat.dTLB-store-misses
8.666e+12 ± 1% +6.4% 9.219e+12 ± 0% perf-stat.dTLB-stores
37.07 ± 14% -21.5% 29.11 ± 10% perf-stat.iTLB-load-miss-rate%
5.813e+08 ± 25% -45.5% 3.166e+08 ± 12% perf-stat.iTLB-load-misses
9.649e+08 ± 2% -20.3% 7.691e+08 ± 5% perf-stat.iTLB-loads
3.905e+13 ± 0% +5.1% 4.105e+13 ± 0% perf-stat.instructions
71218 ± 22% +85.1% 131838 ± 12% perf-stat.instructions-per-iTLB-miss
0.67 ± 0% +5.3% 0.71 ± 0% perf-stat.ipc
2516529 ± 1% -11.1% 2236475 ± 0% perf-stat.minor-faults
43.75 ± 2% -19.7% 35.13 ± 0% perf-stat.node-load-miss-rate%
5.849e+09 ± 3% -11.0% 5.203e+09 ± 0% perf-stat.node-load-misses
7.515e+09 ± 1% +27.8% 9.607e+09 ± 0% perf-stat.node-loads
22.67 ± 0% +38.6% 31.42 ± 0% perf-stat.node-store-miss-rate%
1.665e+09 ± 1% +109.3% 3.485e+09 ± 0% perf-stat.node-store-misses
5.682e+09 ± 2% +33.9% 7.606e+09 ± 0% perf-stat.node-stores
2516529 ± 1% -11.1% 2236448 ± 0% perf-stat.page-faults
326241 ± 8% -47.5% 171439 ± 8% sched_debug.cfs_rq:/.MIN_vruntime.max
68925 ± 5% -68.6% 21676 ± 31% sched_debug.cfs_rq:/.MIN_vruntime.stddev
38373809 ± 8% -29.1% 27192438 ± 7% sched_debug.cfs_rq:/.load.avg
91907686 ± 14% -42.1% 53227633 ± 10% sched_debug.cfs_rq:/.load.max
27021348 ± 15% -50.8% 13305171 ± 7% sched_debug.cfs_rq:/.load.stddev
38188 ± 8% -23.2% 29335 ± 11% sched_debug.cfs_rq:/.load_avg.avg
80834 ± 14% -44.7% 44719 ± 12% sched_debug.cfs_rq:/.load_avg.max
22512 ± 17% -53.4% 10496 ± 14% sched_debug.cfs_rq:/.load_avg.stddev
326248 ± 8% -47.4% 171447 ± 8% sched_debug.cfs_rq:/.max_vruntime.max
68926 ± 5% -68.5% 21677 ± 31% sched_debug.cfs_rq:/.max_vruntime.stddev
327034 ± 8% -46.7% 174369 ± 5% sched_debug.cfs_rq:/.min_vruntime.max
46773 ± 27% +214.1% 146909 ± 6% sched_debug.cfs_rq:/.min_vruntime.min
65277 ± 6% -90.2% 6372 ± 15% sched_debug.cfs_rq:/.min_vruntime.stddev
36.59 ± 8% -29.3% 25.88 ± 7% sched_debug.cfs_rq:/.nr_running.avg
87.65 ± 14% -44.5% 48.64 ± 6% sched_debug.cfs_rq:/.nr_running.max
25.77 ± 15% -52.1% 12.33 ± 2% sched_debug.cfs_rq:/.nr_running.stddev
23346 ± 12% -50.8% 11487 ± 7% sched_debug.cfs_rq:/.runnable_load_avg.avg
65642 ± 16% -64.9% 23039 ± 7% sched_debug.cfs_rq:/.runnable_load_avg.max
19054 ± 20% -74.1% 4941 ± 3% sched_debug.cfs_rq:/.runnable_load_avg.stddev
141272 ± 30% -93.8% 8802 ±128% sched_debug.cfs_rq:/.spread0.max
-138988 ±-18% -86.6% -18657 ±-62% sched_debug.cfs_rq:/.spread0.min
65277 ± 6% -90.2% 6372 ± 15% sched_debug.cfs_rq:/.spread0.stddev
1272 ± 14% -20.8% 1007 ± 5% sched_debug.cfs_rq:/.util_avg.avg
2857 ± 23% -31.0% 1972 ± 4% sched_debug.cfs_rq:/.util_avg.max
555.36 ± 37% -47.6% 290.92 ± 8% sched_debug.cfs_rq:/.util_avg.stddev
4971080 ± 24% -80.3% 978006 ± 3% sched_debug.cpu.avg_idle.max
7448 ± 43% +2715.8% 209722 ± 23% sched_debug.cpu.avg_idle.min
1141706 ± 23% -80.4% 224270 ± 5% sched_debug.cpu.avg_idle.stddev
110.31 ± 30% +54.4% 170.30 ± 23% sched_debug.cpu.clock.stddev
110.31 ± 30% +54.4% 170.30 ± 23% sched_debug.cpu.clock_task.stddev
23385 ± 13% -50.3% 11614 ± 7% sched_debug.cpu.cpu_load[0].avg
66355 ± 16% -65.2% 23117 ± 8% sched_debug.cpu.cpu_load[0].max
19176 ± 20% -74.1% 4975 ± 3% sched_debug.cpu.cpu_load[0].stddev
23612 ± 13% -50.8% 11609 ± 7% sched_debug.cpu.cpu_load[1].avg
65359 ± 18% -66.6% 21840 ± 5% sched_debug.cpu.cpu_load[1].max
18875 ± 20% -75.4% 4639 ± 3% sched_debug.cpu.cpu_load[1].stddev
23709 ± 13% -50.9% 11631 ± 6% sched_debug.cpu.cpu_load[2].avg
65102 ± 18% -68.1% 20773 ± 5% sched_debug.cpu.cpu_load[2].max
18761 ± 21% -76.4% 4431 ± 2% sched_debug.cpu.cpu_load[2].stddev
23784 ± 13% -50.8% 11705 ± 6% sched_debug.cpu.cpu_load[3].avg
64669 ± 19% -69.2% 19945 ± 4% sched_debug.cpu.cpu_load[3].max
18579 ± 21% -77.2% 4242 ± 3% sched_debug.cpu.cpu_load[3].stddev
23900 ± 13% -50.4% 11860 ± 5% sched_debug.cpu.cpu_load[4].avg
63732 ± 19% -69.8% 19251 ± 4% sched_debug.cpu.cpu_load[4].max
18348 ± 20% -77.9% 4051 ± 3% sched_debug.cpu.cpu_load[4].stddev
38363160 ± 8% -29.0% 27246596 ± 7% sched_debug.cpu.load.avg
92064972 ± 14% -42.3% 53093649 ± 10% sched_debug.cpu.load.max
27008459 ± 15% -50.8% 13275018 ± 6% sched_debug.cpu.load.stddev
951016 ± 15% -47.4% 500000 ± 0% sched_debug.cpu.max_idle_balance_cost.avg
4258173 ± 22% -88.3% 500000 ± 0% sched_debug.cpu.max_idle_balance_cost.max
877921 ± 22% -100.0% 0.00 ± -1% sched_debug.cpu.max_idle_balance_cost.stddev
0.00 ± 27% +50.7% 0.00 ± 19% sched_debug.cpu.next_balance.stddev
36.58 ± 8% -29.2% 25.90 ± 7% sched_debug.cpu.nr_running.avg
87.85 ± 14% -44.7% 48.54 ± 6% sched_debug.cpu.nr_running.max
25.77 ± 15% -52.3% 12.30 ± 2% sched_debug.cpu.nr_running.stddev
2586247 ± 8% -33.6% 1716571 ± 6% sched_debug.cpu.nr_switches.stddev
2.67 ± 68% -83.7% 0.44 ± 77% sched_debug.cpu.nr_uninterruptible.avg
404.75 ± 11% -48.2% 209.69 ± 13% sched_debug.cpu.nr_uninterruptible.max
210.44 ± 6% -44.7% 116.41 ± 14% sched_debug.cpu.nr_uninterruptible.stddev
1.31 ± 4% +18.1% 1.55 ± 3% perf-profile.calltrace.cycles.__fget.__fget_light.__fdget.__fdget_pos.sys_read
1.42 ± 4% +17.8% 1.67 ± 3% perf-profile.calltrace.cycles.__fget_light.__fdget.__fdget_pos.sys_read.entry_SYSCALL_64_fastpath
4.95 ± 24% -47.8% 2.58 ± 8% perf-profile.calltrace.cycles.__schedule.schedule.pipe_wait.pipe_read.__vfs_read
9.88 ± 24% -46.3% 5.30 ± 3% perf-profile.calltrace.cycles.__wake_up_common.__wake_up_sync_key.pipe_write.__vfs_write.vfs_write
13.58 ± 20% -36.6% 8.60 ± 2% perf-profile.calltrace.cycles.__wake_up_sync_key.pipe_write.__vfs_write.vfs_write.sys_write
2.27 ± 16% -22.8% 1.75 ± 5% perf-profile.calltrace.cycles._raw_spin_lock_irqsave.__wake_up_sync_key.pipe_write.__vfs_write.vfs_write
0.74 ± 24% +53.5% 1.14 ± 4% perf-profile.calltrace.cycles._raw_spin_unlock_irqrestore.__wake_up_sync_key.pipe_write.__vfs_write.vfs_write
1.39 ± 11% +36.5% 1.89 ± 4% perf-profile.calltrace.cycles.atime_needs_update.touch_atime.pipe_read.__vfs_read.vfs_read
9.27 ± 25% -48.8% 4.75 ± 3% perf-profile.calltrace.cycles.autoremove_wake_function.__wake_up_common.__wake_up_sync_key.pipe_write.__vfs_write
3.79 ± 6% +14.7% 4.34 ± 3% perf-profile.calltrace.cycles.copy_page_from_iter.pipe_write.__vfs_write.vfs_write.sys_write
3.85 ± 7% +21.5% 4.67 ± 3% perf-profile.calltrace.cycles.copy_page_to_iter.pipe_read.__vfs_read.vfs_read.sys_read
3.65 ± 2% +9.6% 4.00 ± 3% perf-profile.calltrace.cycles.copy_user_generic_string.pipe_write.__vfs_write.vfs_write.sys_write
1.61 ± 31% -46.7% 0.86 ± 22% perf-profile.calltrace.cycles.deactivate_task.__schedule.schedule.pipe_wait.pipe_read
9.21 ± 25% -48.9% 4.71 ± 3% perf-profile.calltrace.cycles.default_wake_function.autoremove_wake_function.__wake_up_common.__wake_up_sync_key.pipe_write
1.82 ± 7% +25.4% 2.28 ± 3% perf-profile.calltrace.cycles.file_update_time.pipe_write.__vfs_write.vfs_write.sys_write
1.81 ± 7% +19.2% 2.16 ± 3% perf-profile.calltrace.cycles.mutex_lock.pipe_read.__vfs_read.vfs_read.sys_read
2.15 ± 16% +80.3% 3.87 ± 4% perf-profile.calltrace.cycles.mutex_unlock.__vfs_write.vfs_write.sys_write.entry_SYSCALL_64_fastpath
6.50 ± 23% -46.5% 3.48 ± 8% perf-profile.calltrace.cycles.pipe_wait.pipe_read.__vfs_read.vfs_read.sys_read
2.31 ± 11% -19.3% 1.86 ± 5% perf-profile.calltrace.cycles.pipe_wait.pipe_write.__vfs_write.vfs_write.sys_write
5.25 ± 24% -47.5% 2.75 ± 9% perf-profile.calltrace.cycles.schedule.pipe_wait.pipe_read.__vfs_read.vfs_read
1.97 ± 11% +36.6% 2.70 ± 3% perf-profile.calltrace.cycles.touch_atime.pipe_read.__vfs_read.vfs_read.sys_read
9.98 ± 24% -41.9% 5.80 ± 6% perf-profile.calltrace.cycles.try_to_wake_up.default_wake_function.autoremove_wake_function.__wake_up_common.__wake_up_sync_key
3.50 ± 6% +23.8% 4.34 ± 2% perf-profile.children.cycles.___might_sleep
0.81 ± 27% -46.4% 0.43 ± 3% perf-profile.children.cycles.___perf_sw_event
2.23 ± 6% +18.0% 2.63 ± 3% perf-profile.children.cycles.__might_fault
5.59 ± 6% +19.6% 6.68 ± 3% perf-profile.children.cycles.__might_sleep
0.85 ± 6% +21.0% 1.02 ± 4% perf-profile.children.cycles.__sb_end_write
0.88 ± 5% +19.4% 1.04 ± 4% perf-profile.children.cycles.__sb_start_write
8.50 ± 21% -37.1% 5.34 ± 3% perf-profile.children.cycles.__schedule
11.44 ± 20% -40.3% 6.83 ± 2% perf-profile.children.cycles.__wake_up_common
15.42 ± 18% -33.0% 10.33 ± 2% perf-profile.children.cycles.__wake_up_sync_key
1.75 ± 37% -81.7% 0.32 ± 13% perf-profile.children.cycles._raw_spin_lock
3.42 ± 16% -19.6% 2.75 ± 13% perf-profile.children.cycles._raw_spin_lock_irqsave
3.12 ± 18% -35.6% 2.01 ± 4% perf-profile.children.cycles.activate_task
1.79 ± 13% +32.1% 2.37 ± 3% perf-profile.children.cycles.atime_needs_update
10.67 ± 22% -42.6% 6.12 ± 3% perf-profile.children.cycles.autoremove_wake_function
0.85 ± 27% -56.7% 0.37 ± 5% perf-profile.children.cycles.check_preempt_curr
3.88 ± 6% +15.3% 4.47 ± 3% perf-profile.children.cycles.copy_page_from_iter
4.04 ± 5% +18.2% 4.77 ± 3% perf-profile.children.cycles.copy_page_to_iter
8.24 ± 2% +9.3% 9.01 ± 3% perf-profile.children.cycles.copy_user_generic_string
1.46 ± 9% +36.9% 2.00 ± 2% perf-profile.children.cycles.current_fs_time
2.27 ± 18% -35.3% 1.47 ± 3% perf-profile.children.cycles.deactivate_task
10.60 ± 21% -42.7% 6.08 ± 3% perf-profile.children.cycles.default_wake_function
1.44 ± 16% -33.2% 0.97 ± 2% perf-profile.children.cycles.dequeue_task_fair
2.26 ± 19% -36.0% 1.45 ± 3% perf-profile.children.cycles.enqueue_task_fair
2.45 ± 8% +25.6% 3.08 ± 3% perf-profile.children.cycles.entry_SYSCALL_64
2.27 ± 5% +18.9% 2.70 ± 3% perf-profile.children.cycles.entry_SYSCALL_64_after_swapgs
1.66 ± 26% -35.3% 1.07 ± 6% perf-profile.children.cycles.exit_to_usermode_loop
1.89 ± 8% +25.8% 2.38 ± 2% perf-profile.children.cycles.file_update_time
1.80 ± 2% +16.1% 2.09 ± 2% perf-profile.children.cycles.fput
1.63 ± 5% +20.6% 1.96 ± 3% perf-profile.children.cycles.fsnotify
1.82 ± 24% -38.4% 1.12 ± 3% perf-profile.children.cycles.idle_cpu
0.79 ± 7% +22.7% 0.97 ± 3% perf-profile.children.cycles.iov_iter_init
3.44 ± 8% +48.8% 5.12 ± 3% perf-profile.children.cycles.mutex_unlock
1.18 ± 17% -31.9% 0.80 ± 5% perf-profile.children.cycles.native_write_msr
2.27 ± 20% -35.0% 1.48 ± 4% perf-profile.children.cycles.pick_next_task_fair
8.83 ± 20% -37.8% 5.50 ± 3% perf-profile.children.cycles.pipe_wait
0.84 ± 24% -49.6% 0.42 ± 3% perf-profile.children.cycles.prepare_to_wait
2.35 ± 42% -83.4% 0.39 ± 85% perf-profile.children.cycles.queued_spin_lock_slowpath
8.56 ± 20% -37.2% 5.38 ± 3% perf-profile.children.cycles.schedule
3.50 ± 22% -38.3% 2.16 ± 3% perf-profile.children.cycles.select_task_rq_fair
0.93 ± 16% -30.8% 0.64 ± 7% perf-profile.children.cycles.set_next_entity
0.80 ± 8% +30.4% 1.04 ± 5% perf-profile.children.cycles.timespec_trunc
2.09 ± 10% +33.2% 2.79 ± 3% perf-profile.children.cycles.touch_atime
10.31 ± 21% -42.6% 5.92 ± 3% perf-profile.children.cycles.try_to_wake_up
4.22 ± 21% -40.8% 2.50 ± 4% perf-profile.children.cycles.ttwu_do_activate
0.96 ± 27% -56.1% 0.42 ± 4% perf-profile.children.cycles.ttwu_do_wakeup
0.78 ± 21% -45.8% 0.42 ± 4% perf-profile.children.cycles.update_curr
1.14 ± 6% +22.2% 1.39 ± 4% perf-profile.children.cycles.update_fast_ctr
0.79 ± 22% -40.5% 0.47 ± 3% perf-profile.children.cycles.update_rq_clock
3.50 ± 6% +23.8% 4.34 ± 2% perf-profile.self.cycles.___might_sleep
0.78 ± 28% -47.9% 0.40 ± 3% perf-profile.self.cycles.___perf_sw_event
2.54 ± 6% +13.7% 2.88 ± 3% perf-profile.self.cycles.__might_sleep
1.57 ± 17% -27.0% 1.15 ± 3% perf-profile.self.cycles.__schedule
2.62 ± 5% +18.9% 3.11 ± 3% perf-profile.self.cycles.__vfs_read
2.45 ± 7% +21.8% 2.98 ± 3% perf-profile.self.cycles.__vfs_write
0.91 ± 16% +27.9% 1.17 ± 3% perf-profile.self.cycles.atime_needs_update
2.09 ± 5% +12.5% 2.35 ± 3% perf-profile.self.cycles.copy_page_from_iter
2.31 ± 5% +14.7% 2.65 ± 3% perf-profile.self.cycles.copy_page_to_iter
8.24 ± 2% +9.3% 9.01 ± 3% perf-profile.self.cycles.copy_user_generic_string
0.85 ± 15% -30.4% 0.59 ± 2% perf-profile.self.cycles.dequeue_task_fair
1.01 ± 17% -31.8% 0.68 ± 3% perf-profile.self.cycles.enqueue_task_fair
2.45 ± 8% +25.6% 3.08 ± 3% perf-profile.self.cycles.entry_SYSCALL_64
2.27 ± 5% +18.9% 2.70 ± 3% perf-profile.self.cycles.entry_SYSCALL_64_after_swapgs
1.17 ± 5% +12.4% 1.32 ± 2% perf-profile.self.cycles.entry_SYSCALL_64_fastpath
0.97 ± 6% +24.5% 1.21 ± 2% perf-profile.self.cycles.file_update_time
1.80 ± 2% +16.1% 2.09 ± 2% perf-profile.self.cycles.fput
1.63 ± 5% +20.6% 1.96 ± 3% perf-profile.self.cycles.fsnotify
1.82 ± 24% -38.4% 1.12 ± 3% perf-profile.self.cycles.idle_cpu
0.79 ± 7% +22.7% 0.97 ± 3% perf-profile.self.cycles.iov_iter_init
3.34 ± 9% +52.6% 5.11 ± 3% perf-profile.self.cycles.mutex_unlock
1.18 ± 17% -31.9% 0.80 ± 5% perf-profile.self.cycles.native_write_msr
2.43 ± 1% +11.9% 2.72 ± 3% perf-profile.self.cycles.pipe_read
3.18 ± 1% +17.2% 3.73 ± 3% perf-profile.self.cycles.pipe_write
2.35 ± 42% -83.4% 0.39 ± 85% perf-profile.self.cycles.queued_spin_lock_slowpath
1.04 ± 20% -39.8% 0.63 ± 3% perf-profile.self.cycles.select_task_rq_fair
0.79 ± 5% +24.8% 0.99 ± 3% perf-profile.self.cycles.sys_read
0.79 ± 7% +22.7% 0.97 ± 3% perf-profile.self.cycles.sys_write
0.80 ± 8% +30.4% 1.04 ± 5% perf-profile.self.cycles.timespec_trunc
1.14 ± 6% +22.2% 1.39 ± 4% perf-profile.self.cycles.update_fast_ctr
1.72 ± 5% +20.8% 2.08 ± 2% perf-profile.self.cycles.vfs_read
1.80 ± 5% +19.0% 2.14 ± 2% perf-profile.self.cycles.vfs_write
Thanks,
Xiaolong
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