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Message-ID: <20160807141105.GC21617@yexl-desktop>
Date: Sun, 7 Aug 2016 22:11:05 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Mikulas Patocka <mpatocka@...hat.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Hugh Dickins <hughd@...gle.com>,
Michal Hocko <mhocko@...nel.org>,
Alexander Viro <viro@...iv.linux.org.uk>,
Mel Gorman <mgorman@...e.de>,
Johannes Weiner <hannes@...xchg.org>,
Andi Kleen <andi@...stfloor.org>,
Andrew Morton <akpm@...ux-foundation.org>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp] [mm] 3fa6c50731: hackbench.throughput 9.9% improvement
FYI, we noticed a 9.9% improvement of hackbench.throughput due to commit:
commit 3fa6c507319c897598512da91c010a4ad2ed682c ("mm: optimize copy_page_to/from_iter_iovec")
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
in testcase: hackbench
on test machine: 12 threads Westmere with 6G memory
with following parameters:
nr_threads: 50%
mode: process
ipc: pipe
cpufreq_governor: performance
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/ipc/kconfig/mode/nr_threads/rootfs/tbox_group/testcase:
gcc-6/performance/pipe/x86_64-rhel/process/50%/debian-x86_64-2015-02-07.cgz/wsm/hackbench
commit:
7e4411bfe6 ("mm: add cond_resched() to generic_swapfile_activate()")
3fa6c50731 ("mm: optimize copy_page_to/from_iter_iovec")
7e4411bfe6dd2971 3fa6c507319c897598512da91c
---------------- --------------------------
fail:runs %reproduction fail:runs
| | |
%stddev %change %stddev
\ | \
54186 ± 0% +9.9% 59563 ± 0% hackbench.throughput
623.16 ± 0% -1.4% 614.17 ± 0% hackbench.time.elapsed_time
623.16 ± 0% -1.4% 614.17 ± 0% hackbench.time.elapsed_time.max
2.558e+08 ± 1% -49.9% 1.28e+08 ± 0% hackbench.time.involuntary_context_switches
219479 ± 0% +8.3% 237691 ± 0% hackbench.time.minor_page_faults
1182 ± 0% -3.3% 1142 ± 0% hackbench.time.percent_of_cpu_this_job_got
6906 ± 0% -4.3% 6610 ± 0% hackbench.time.system_time
462.37 ± 0% -11.5% 409.01 ± 0% hackbench.time.user_time
9.813e+08 ± 1% -19.0% 7.953e+08 ± 0% hackbench.time.voluntary_context_switches
78641 ± 1% -1.5% 77430 ± 0% interrupts.CAL:Function_call_interrupts
283030 ± 4% +204.8% 862697 ± 0% softirqs.SCHED
99.14 ± 0% -1.7% 97.48 ± 0% turbostat.%Busy
3483 ± 0% -1.7% 3424 ± 0% turbostat.Avg_MHz
0.71 ± 3% +234.5% 2.38 ± 1% turbostat.CPU%c1
142.75 ± 1% -22.1% 111.25 ± 0% vmstat.procs.r
2020719 ± 1% -17.8% 1661290 ± 0% vmstat.system.cs
397397 ± 0% -41.9% 230705 ± 0% vmstat.system.in
35891846 ± 0% +28.6% 46143986 ± 0% proc-vmstat.numa_hit
35891843 ± 0% +28.6% 46143984 ± 0% proc-vmstat.numa_local
35957085 ± 0% +28.5% 46213934 ± 0% proc-vmstat.pgalloc_normal
35940003 ± 0% +28.5% 46198964 ± 0% proc-vmstat.pgfree
50485763 ± 3% +250.5% 1.769e+08 ± 1% cpuidle.C1-NHM.time
14312245 ± 3% +314.8% 59367078 ± 0% cpuidle.C1-NHM.usage
590743 ± 2% +118.0% 1287652 ± 5% cpuidle.C1E-NHM.time
13679 ± 4% +181.8% 38554 ± 4% cpuidle.C1E-NHM.usage
7545462 ± 5% +9.8% 8287020 ± 5% cpuidle.C3-NHM.time
20219 ± 3% +45.2% 29359 ± 4% cpuidle.C3-NHM.usage
2157694 ± 19% +242.3% 7386617 ± 5% cpuidle.POLL.time
329048 ± 3% +319.8% 1381417 ± 0% cpuidle.POLL.usage
2.656e+12 ± 0% +4.9% 2.785e+12 ± 0% perf-stat.branch-instructions
1.52 ± 0% -11.2% 1.35 ± 0% perf-stat.branch-miss-rate
4.044e+10 ± 0% -6.9% 3.766e+10 ± 0% perf-stat.branch-misses
0.20 ± 1% +46.2% 0.29 ± 1% perf-stat.cache-miss-rate
3.172e+08 ± 1% +23.4% 3.913e+08 ± 1% perf-stat.cache-misses
1.622e+11 ± 1% -15.7% 1.368e+11 ± 0% perf-stat.cache-references
1.264e+09 ± 1% -18.9% 1.025e+09 ± 0% perf-stat.context-switches
2.588e+13 ± 0% -3.1% 2.508e+13 ± 0% perf-stat.cpu-cycles
7197359 ± 1% +316.2% 29954541 ± 2% perf-stat.cpu-migrations
4.154e+12 ± 0% +4.4% 4.338e+12 ± 0% perf-stat.dTLB-loads
2.551e+12 ± 0% +4.7% 2.67e+12 ± 0% perf-stat.dTLB-stores
0.03 ± 1% -26.7% 0.02 ± 0% perf-stat.iTLB-load-miss-rate
4.549e+09 ± 1% -23.6% 3.477e+09 ± 0% perf-stat.iTLB-load-misses
1.401e+13 ± 0% +4.2% 1.46e+13 ± 0% perf-stat.iTLB-loads
1.401e+13 ± 0% +4.3% 1.46e+13 ± 0% perf-stat.instructions
3079 ± 1% +36.3% 4199 ± 0% perf-stat.instructions-per-iTLB-miss
0.54 ± 0% +7.6% 0.58 ± 0% perf-stat.ipc
979420 ± 0% +8.8% 1065802 ± 0% perf-stat.minor-faults
1.094e+08 ± 1% +27.5% 1.395e+08 ± 1% perf-stat.node-loads
1.952e+08 ± 1% +22.1% 2.383e+08 ± 0% perf-stat.node-stores
979409 ± 0% +8.8% 1065778 ± 0% perf-stat.page-faults
18834 ± 22% -65.7% 6451 ± 31% sched_debug.cfs_rq:/.load.min
5653832 ± 1% +25.9% 7116466 ± 0% sched_debug.cfs_rq:/.min_vruntime.avg
5731022 ± 1% +26.1% 7228446 ± 0% sched_debug.cfs_rq:/.min_vruntime.max
5588870 ± 1% +25.3% 7000867 ± 0% sched_debug.cfs_rq:/.min_vruntime.min
41841 ± 6% +74.3% 72909 ± 8% sched_debug.cfs_rq:/.min_vruntime.stddev
0.14 ± 24% +53.0% 0.21 ± 9% sched_debug.cfs_rq:/.nr_running.stddev
99.27 ± 2% -13.9% 85.52 ± 2% sched_debug.cfs_rq:/.runnable_load_avg.max
39.55 ± 9% -25.9% 29.30 ± 14% sched_debug.cfs_rq:/.runnable_load_avg.min
4695 ±676% +1191.9% 60659 ± 67% sched_debug.cfs_rq:/.spread0.avg
81802 ± 33% +111.0% 172600 ± 26% sched_debug.cfs_rq:/.spread0.max
41801 ± 6% +74.3% 72845 ± 8% sched_debug.cfs_rq:/.spread0.stddev
7.50 ± 27% -44.4% 4.17 ± 13% sched_debug.cpu.clock.stddev
7.50 ± 27% -44.4% 4.17 ± 13% sched_debug.cpu.clock_task.stddev
68.60 ± 3% -19.0% 55.56 ± 5% sched_debug.cpu.cpu_load[0].avg
98.59 ± 1% -11.6% 87.11 ± 3% sched_debug.cpu.cpu_load[0].max
21.36 ± 16% +31.0% 27.99 ± 11% sched_debug.cpu.cpu_load[0].stddev
100.68 ± 3% -13.7% 86.89 ± 3% sched_debug.cpu.cpu_load[1].max
100.61 ± 3% -14.7% 85.86 ± 2% sched_debug.cpu.cpu_load[2].max
12.73 ± 10% -24.5% 9.62 ± 15% sched_debug.cpu.cpu_load[2].stddev
99.91 ± 3% -14.9% 85.02 ± 2% sched_debug.cpu.cpu_load[3].max
12.44 ± 11% -29.0% 8.83 ± 12% sched_debug.cpu.cpu_load[3].stddev
98.70 ± 3% -14.3% 84.64 ± 2% sched_debug.cpu.cpu_load[4].max
12.07 ± 11% -29.6% 8.50 ± 11% sched_debug.cpu.cpu_load[4].stddev
1514 ± 27% +59.5% 2415 ± 21% sched_debug.cpu.curr->pid.stddev
17382 ± 42% -76.5% 4082 ± 24% sched_debug.cpu.load.min
9.72 ± 10% -27.8% 7.02 ± 6% sched_debug.cpu.nr_running.avg
20.45 ± 8% -15.8% 17.23 ± 3% sched_debug.cpu.nr_running.max
2.66 ± 47% -80.3% 0.52 ± 22% sched_debug.cpu.nr_running.min
50594782 ± 1% -18.0% 41509427 ± 0% sched_debug.cpu.nr_switches.avg
53214998 ± 1% -16.7% 44306289 ± 0% sched_debug.cpu.nr_switches.max
48171349 ± 1% -19.0% 39022763 ± 0% sched_debug.cpu.nr_switches.min
0.13 ± 43% +1745.7% 2.45 ± 10% sched_debug.cpu.nr_uninterruptible.avg
265.23 ± 23% +584.3% 1814 ± 18% sched_debug.cpu.nr_uninterruptible.max
-260.93 ±-26% +683.9% -2045 ± -7% sched_debug.cpu.nr_uninterruptible.min
147.42 ± 9% +719.8% 1208 ± 12% sched_debug.cpu.nr_uninterruptible.stddev
0.32 ±100% +320.9% 1.36 ± 5% perf-profile.cycles-pp.__fget_light.sys_write.entry_SYSCALL_64_fastpath
1.57 ± 16% +107.0% 3.25 ± 2% perf-profile.cycles-pp.__mutex_lock_slowpath.mutex_lock.pipe_write.__vfs_write.vfs_write
22.20 ± 16% -100.0% 0.00 ± -1% perf-profile.cycles-pp.__read_nocancel
2.32 ± 7% -63.5% 0.85 ± 3% perf-profile.cycles-pp.__schedule.schedule.exit_to_usermode_loop.syscall_return_slowpath.entry_SYSCALL_64_fastpath
13.13 ± 1% -22.2% 10.21 ± 1% perf-profile.cycles-pp.__schedule.schedule.pipe_wait.pipe_read.__vfs_read
1.03 ± 17% +47.6% 1.53 ± 2% perf-profile.cycles-pp.__switch_to
12.11 ± 20% +104.5% 24.77 ± 0% perf-profile.cycles-pp.__vfs_read.vfs_read.sys_read.entry_SYSCALL_64_fastpath
14.31 ± 17% -100.0% 0.00 ± -1% perf-profile.cycles-pp.__vfs_read.vfs_read.sys_read.entry_SYSCALL_64_fastpath.__read_nocancel
19.46 ± 22% +132.0% 45.16 ± 0% perf-profile.cycles-pp.__vfs_write.vfs_write.sys_write.entry_SYSCALL_64_fastpath
25.25 ± 16% -100.0% 0.00 ± -1% perf-profile.cycles-pp.__vfs_write.vfs_write.sys_write.entry_SYSCALL_64_fastpath.__write_nocancel
21.44 ± 2% -26.0% 15.87 ± 1% perf-profile.cycles-pp.__wake_up_common.__wake_up_sync_key.pipe_write.__vfs_write.vfs_write
29.77 ± 2% -11.1% 26.46 ± 1% perf-profile.cycles-pp.__wake_up_sync_key.pipe_write.__vfs_write.vfs_write.sys_write
33.50 ± 16% -100.0% 0.00 ± -1% perf-profile.cycles-pp.__write_nocancel
1.62 ± 2% -29.2% 1.15 ± 6% perf-profile.cycles-pp._raw_spin_lock.__schedule.schedule.pipe_wait.pipe_read
4.84 ± 3% -27.2% 3.53 ± 3% perf-profile.cycles-pp._raw_spin_lock.try_to_wake_up.default_wake_function.autoremove_wake_function.__wake_up_common
6.98 ± 5% +36.5% 9.53 ± 1% perf-profile.cycles-pp._raw_spin_lock_irqsave.__wake_up_sync_key.pipe_write.__vfs_write.vfs_write
7.36 ± 2% -26.0% 5.44 ± 1% perf-profile.cycles-pp.activate_task.ttwu_do_activate.try_to_wake_up.default_wake_function.autoremove_wake_function
20.76 ± 2% -26.9% 15.17 ± 1% perf-profile.cycles-pp.autoremove_wake_function.__wake_up_common.__wake_up_sync_key.pipe_write.__vfs_write
0.00 ± -1% +Inf% 1.38 ± 2% perf-profile.cycles-pp.avc_has_perm.file_has_perm.selinux_file_permission.security_file_permission.rw_verify_area
0.94 ± 17% +216.7% 2.99 ± 3% perf-profile.cycles-pp.call_cpuidle.cpu_startup_entry.start_secondary
1.48 ± 4% -33.4% 0.99 ± 2% perf-profile.cycles-pp.check_preempt_curr.ttwu_do_wakeup.ttwu_do_activate.try_to_wake_up.default_wake_function
2.84 ± 5% +45.4% 4.14 ± 0% perf-profile.cycles-pp.copy_page_from_iter.pipe_write.__vfs_write.vfs_write.sys_write
0.86 ± 23% +129.1% 1.97 ± 1% perf-profile.cycles-pp.copy_page_from_iter_iovec.copy_page_from_iter.pipe_write.__vfs_write.vfs_write
3.85 ± 4% +28.8% 4.96 ± 1% perf-profile.cycles-pp.copy_page_to_iter.pipe_read.__vfs_read.vfs_read.sys_read
1.32 ± 22% +47.7% 1.96 ± 2% perf-profile.cycles-pp.copy_page_to_iter_iovec.copy_page_to_iter.pipe_read.__vfs_read.vfs_read
1.38 ± 13% +27.4% 1.76 ± 0% perf-profile.cycles-pp.copy_user_generic_string.copy_page_from_iter.pipe_write.__vfs_write.vfs_write
2.17 ± 5% +18.7% 2.57 ± 1% perf-profile.cycles-pp.copy_user_generic_string.copy_page_to_iter.pipe_read.__vfs_read.vfs_read
1.58 ± 16% +257.4% 5.65 ± 4% perf-profile.cycles-pp.cpu_startup_entry.start_secondary
0.93 ± 17% +217.1% 2.96 ± 3% perf-profile.cycles-pp.cpuidle_enter.call_cpuidle.cpu_startup_entry.start_secondary
0.93 ± 17% +215.6% 2.94 ± 3% perf-profile.cycles-pp.cpuidle_enter_state.cpuidle_enter.call_cpuidle.cpu_startup_entry.start_secondary
5.60 ± 1% -18.2% 4.58 ± 1% perf-profile.cycles-pp.deactivate_task.__schedule.schedule.pipe_wait.pipe_read
20.53 ± 2% -27.0% 14.97 ± 2% perf-profile.cycles-pp.default_wake_function.autoremove_wake_function.__wake_up_common.__wake_up_sync_key.pipe_write
3.44 ± 1% -15.6% 2.90 ± 2% perf-profile.cycles-pp.dequeue_entity.dequeue_task_fair.deactivate_task.__schedule.schedule
4.66 ± 1% -17.3% 3.85 ± 1% perf-profile.cycles-pp.dequeue_task_fair.deactivate_task.__schedule.schedule.pipe_wait
5.33 ± 2% -26.9% 3.90 ± 2% perf-profile.cycles-pp.enqueue_entity.enqueue_task_fair.activate_task.ttwu_do_activate.try_to_wake_up
6.43 ± 2% -26.8% 4.71 ± 2% perf-profile.cycles-pp.enqueue_task_fair.activate_task.ttwu_do_activate.try_to_wake_up.default_wake_function
39.59 ± 22% +125.5% 89.25 ± 0% perf-profile.cycles-pp.entry_SYSCALL_64_fastpath
19.64 ± 16% -100.0% 0.00 ± -1% perf-profile.cycles-pp.entry_SYSCALL_64_fastpath.__read_nocancel
31.99 ± 16% -100.0% 0.00 ± -1% perf-profile.cycles-pp.entry_SYSCALL_64_fastpath.__write_nocancel
1.17 ± 16% -100.0% 0.00 ± -1% perf-profile.cycles-pp.exit_to_usermode_loop.syscall_return_slowpath.entry_SYSCALL_64_fastpath.__write_nocancel
0.60 ± 16% +75.7% 1.05 ± 1% perf-profile.cycles-pp.file_has_perm.selinux_file_permission.security_file_permission.rw_verify_area.vfs_write
1.77 ± 6% -27.4% 1.29 ± 2% perf-profile.cycles-pp.idle_cpu.select_idle_sibling.select_task_rq_fair.try_to_wake_up.default_wake_function
0.89 ± 17% +215.8% 2.79 ± 3% perf-profile.cycles-pp.intel_idle.cpuidle_enter_state.cpuidle_enter.call_cpuidle.cpu_startup_entry
0.62 ± 15% +93.1% 1.20 ± 4% perf-profile.cycles-pp.mutex_lock.pipe_read.__vfs_read.vfs_read.sys_read
3.73 ± 1% +43.7% 5.36 ± 2% perf-profile.cycles-pp.mutex_lock.pipe_write.__vfs_write.vfs_write.sys_write
1.51 ± 16% +103.2% 3.06 ± 2% perf-profile.cycles-pp.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.pipe_write.__vfs_write
0.00 ± -1% +Inf% 1.01 ± 3% perf-profile.cycles-pp.mutex_spin_on_owner.isra.1.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.pipe_write
1.11 ± 20% +28.8% 1.43 ± 2% perf-profile.cycles-pp.mutex_unlock.__vfs_write.vfs_write.sys_write.entry_SYSCALL_64_fastpath
1.61 ± 2% -29.4% 1.14 ± 5% perf-profile.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.__schedule.schedule.pipe_wait
4.82 ± 3% -27.1% 3.51 ± 3% perf-profile.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.try_to_wake_up.default_wake_function.autoremove_wake_function
6.14 ± 6% +38.2% 8.49 ± 1% perf-profile.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.__wake_up_sync_key.pipe_write.__vfs_write
0.90 ± 26% -71.6% 0.26 ±100% perf-profile.cycles-pp.pick_next_task_fair.__schedule.schedule.exit_to_usermode_loop.syscall_return_slowpath
2.27 ± 2% -29.5% 1.60 ± 3% perf-profile.cycles-pp.pick_next_task_fair.__schedule.schedule.pipe_wait.pipe_read
15.47 ± 1% -21.2% 12.20 ± 1% perf-profile.cycles-pp.pipe_wait.pipe_read.__vfs_read.vfs_read.sys_read
1.60 ± 24% +197.5% 4.77 ± 1% perf-profile.cycles-pp.rw_verify_area.vfs_read.sys_read.entry_SYSCALL_64_fastpath
2.72 ± 15% -100.0% 0.00 ± -1% perf-profile.cycles-pp.rw_verify_area.vfs_read.sys_read.entry_SYSCALL_64_fastpath.__read_nocancel
1.46 ± 25% +181.8% 4.12 ± 0% perf-profile.cycles-pp.rw_verify_area.vfs_write.sys_write.entry_SYSCALL_64_fastpath
2.39 ± 16% -100.0% 0.00 ± -1% perf-profile.cycles-pp.rw_verify_area.vfs_write.sys_write.entry_SYSCALL_64_fastpath.__write_nocancel
1.12 ± 16% -100.0% 0.00 ± -1% perf-profile.cycles-pp.schedule.exit_to_usermode_loop.syscall_return_slowpath.entry_SYSCALL_64_fastpath.__write_nocancel
13.59 ± 1% -22.3% 10.57 ± 1% perf-profile.cycles-pp.schedule.pipe_wait.pipe_read.__vfs_read.vfs_read
3.57 ± 3% -26.9% 2.61 ± 1% perf-profile.cycles-pp.select_idle_sibling.select_task_rq_fair.try_to_wake_up.default_wake_function.autoremove_wake_function
4.55 ± 3% -28.6% 3.25 ± 1% perf-profile.cycles-pp.select_task_rq_fair.try_to_wake_up.default_wake_function.autoremove_wake_function.__wake_up_common
1.60 ± 16% +257.4% 5.71 ± 4% perf-profile.cycles-pp.start_secondary
14.86 ± 21% +119.1% 32.55 ± 0% perf-profile.cycles-pp.sys_read.entry_SYSCALL_64_fastpath
18.81 ± 16% -100.0% 0.00 ± -1% perf-profile.cycles-pp.sys_read.entry_SYSCALL_64_fastpath.__read_nocancel
22.39 ± 23% +138.6% 53.41 ± 0% perf-profile.cycles-pp.sys_write.entry_SYSCALL_64_fastpath
30.11 ± 16% -100.0% 0.00 ± -1% perf-profile.cycles-pp.sys_write.entry_SYSCALL_64_fastpath.__write_nocancel
1.21 ± 16% -100.0% 0.00 ± -1% perf-profile.cycles-pp.syscall_return_slowpath.entry_SYSCALL_64_fastpath.__write_nocancel
19.98 ± 2% -27.2% 14.55 ± 1% perf-profile.cycles-pp.try_to_wake_up.default_wake_function.autoremove_wake_function.__wake_up_common.__wake_up_sync_key
9.13 ± 2% -26.5% 6.71 ± 1% perf-profile.cycles-pp.ttwu_do_activate.try_to_wake_up.default_wake_function.autoremove_wake_function.__wake_up_common
1.66 ± 3% -27.9% 1.20 ± 2% perf-profile.cycles-pp.ttwu_do_wakeup.ttwu_do_activate.try_to_wake_up.default_wake_function.autoremove_wake_function
1.37 ± 2% -15.4% 1.16 ± 1% perf-profile.cycles-pp.update_cfs_shares.dequeue_entity.dequeue_task_fair.deactivate_task.__schedule
1.83 ± 3% -26.4% 1.35 ± 2% perf-profile.cycles-pp.update_cfs_shares.enqueue_entity.enqueue_task_fair.activate_task.ttwu_do_activate
14.32 ± 20% +118.2% 31.25 ± 0% perf-profile.cycles-pp.vfs_read.sys_read.entry_SYSCALL_64_fastpath
18.00 ± 16% -100.0% 0.00 ± -1% perf-profile.cycles-pp.vfs_read.sys_read.entry_SYSCALL_64_fastpath.__read_nocancel
21.62 ± 23% +137.5% 51.34 ± 0% perf-profile.cycles-pp.vfs_write.sys_write.entry_SYSCALL_64_fastpath
28.84 ± 16% -100.0% 0.00 ± -1% perf-profile.cycles-pp.vfs_write.sys_write.entry_SYSCALL_64_fastpath.__write_nocancel
0.91 ± 5% +113.2% 1.94 ± 2% perf-profile.func.cycles-pp.___might_sleep
1.00 ± 2% -47.2% 0.53 ± 4% perf-profile.func.cycles-pp.__enqueue_entity
1.05 ± 6% +101.9% 2.12 ± 3% perf-profile.func.cycles-pp.__might_sleep
2.29 ± 2% -23.9% 1.74 ± 3% perf-profile.func.cycles-pp.__schedule
2.53 ± 1% -23.8% 1.93 ± 2% perf-profile.func.cycles-pp.__switch_to
1.06 ± 1% -10.6% 0.95 ± 4% perf-profile.func.cycles-pp._raw_spin_lock
1.04 ± 2% -18.2% 0.85 ± 2% perf-profile.func.cycles-pp._raw_spin_unlock_irqrestore
1.19 ± 5% -13.1% 1.03 ± 1% perf-profile.func.cycles-pp.copy_page_from_iter_iovec
1.61 ± 4% -32.4% 1.09 ± 4% perf-profile.func.cycles-pp.copy_page_to_iter_iovec
3.77 ± 4% +15.3% 4.35 ± 0% perf-profile.func.cycles-pp.copy_user_generic_string
1.92 ± 6% -25.2% 1.44 ± 1% perf-profile.func.cycles-pp.idle_cpu
0.95 ± 17% +214.8% 2.98 ± 3% perf-profile.func.cycles-pp.intel_idle
0.65 ± 5% +51.0% 0.98 ± 4% perf-profile.func.cycles-pp.mutex_optimistic_spin
0.52 ± 3% +114.4% 1.11 ± 2% perf-profile.func.cycles-pp.mutex_spin_on_owner.isra.1
2.32 ± 4% +15.0% 2.67 ± 4% perf-profile.func.cycles-pp.pipe_write
1.04 ± 4% -24.1% 0.79 ± 3% perf-profile.func.cycles-pp.select_idle_sibling
1.44 ± 4% -28.3% 1.03 ± 4% perf-profile.func.cycles-pp.switch_mm_irqs_off
0.98 ± 3% -19.4% 0.79 ± 1% perf-profile.func.cycles-pp.update_cfs_rq_load_avg
1.58 ± 3% -17.9% 1.30 ± 1% perf-profile.func.cycles-pp.update_cfs_shares
2.45 ± 2% -26.9% 1.79 ± 2% perf-profile.func.cycles-pp.update_curr
1.07 ± 6% +18.1% 1.27 ± 3% perf-profile.func.cycles-pp.vfs_write
perf-stat.cache-references
1.7e+11 ++---------------------------------------------------------------+
| |
1.65e+11 ++ *
1.6e+11 +* * * **.* .* *. * .* *. * * * .*|
* + :*.***.*: : : * :: ***.** * :: ***.** + *.* * * .* * |
1.55e+11 ++ * : : :: * * ** + :* |
| *.* : * |
1.5e+11 ++ * |
| |
1.45e+11 ++ |
1.4e+11 ++ |
| O O |
1.35e+11 OO O O O OOO OOO O O O OO |
| OO OO OOO |
1.3e+11 ++---------------------------------------------------------------+
perf-stat.context-switches
1.3e+09 ++---------------------------------------------------------------*
|* * * .* *. * .* *. * * |
1.25e+09 *++ :*.***.*: *.* * :: ***.** * :: ***.** : ** :*.*|
| * : * : : * * : *.* : * .* |
1.2e+09 ++ *. : :: ** : :* |
| * : * |
1.15e+09 ++ * |
| |
1.1e+09 ++ |
| |
1.05e+09 ++ |
O O OOO OO |
1e+09 +O O O O OOO OOO OOO OOO |
| OO |
9.5e+08 ++---------------------------------------------------------------+
perf-stat.cpu-migrations
3.5e+07 ++----------------------------------------------------------------+
| |
3e+07 ++ O O OO O O O O |
OO OOO OO OOO O O O O O O O |
| |
2.5e+07 ++ |
| |
2e+07 ++ |
| |
1.5e+07 ++ |
| |
| |
1e+07 ++ |
**.* *.**.***.***. **.* *.**.***.***.***.**
5e+06 ++--**-***-**-------------***-***-*----**-***-**------------------+
turbostat.Avg_MHz
3490 ++-------------------------------------------------------------------+
| *.***. *.* .**.** .**. .**.** .**. .* .* .**
3480 **.* * **.**.**.*** * *** * **.***.** ** * |
| |
3470 ++ |
| |
3460 ++ |
| |
3450 ++ |
| |
3440 ++ |
| |
3430 ++ O O OO |
OO O OO OO OOO OO OOO OO OOO O |
3420 ++-------------------------------------------------------------------+
turbostat._Busy
99.2 ++--*-***--*-*-------------**-**--**-----**-**--**-------------------*
**.* * **.**.* .*** * *** * **.***.**.***.**.*|
99 ++ * |
98.8 ++ |
| |
98.6 ++ |
98.4 ++ |
| |
98.2 ++ |
98 ++ |
| |
97.8 ++ |
97.6 ++ |
OO OO O O OO OOO OO OO OOO O O O |
97.4 ++-----O--------------------O--O--O----------------------------------+
turbostat.CPU_c1
2.6 ++--------------------------------------------------------------------+
2.4 ++ O O O O |
OO OO O O O OO OO OOO OO OO OO O |
2.2 ++ |
2 ++ |
| |
1.8 ++ |
1.6 ++ |
1.4 ++ |
| |
1.2 ++ |
1 ++ |
| .* *. *. |
0.8 **.**.**.***.** *.** **.**.***.**.**.***.**.**.***.* **.***.**.**.*|
0.6 ++--------------------------------------------------------------------*
perf-profile.cycles-pp.start_secondary
7 ++----------------------------------------------------------------------+
| |
6 +O OO |
O O OO O O OO O O OO OO |
5 ++ O O O O OOO |
| O |
4 ++ |
| * |
3 ++ :: |
|*. * * :: |
2 ++ * .* *.* .**.* :*. * .* : *. * *.**.: :*.* *.*|
| * :.* .* * *.: * + *. * :: * + * .* * * *.**.* |
1 *+ * * * * * * * * *
| |
0 ++----------------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
Thanks,
Xiaolong
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