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Date: Tue, 16 Jun 2020 15:39:08 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Mel Gorman <mgorman@...hsingularity.net>
Cc: Ingo Molnar <mingo@...nel.org>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Peter Zijlstra <peterz@...radead.org>,
Jirka Hladky <jhladky@...hat.com>,
Vincent Guittot <vincent.guittot@...aro.org>,
Hillf Danton <hdanton@...a.com>,
Rik van Riel <riel@...riel.com>,
LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org
Subject: [sched/core] 2ebb177175: will-it-scale.per_thread_ops -3.7%
regression
Greeting,
FYI, we noticed a -3.7% regression of will-it-scale.per_thread_ops due to commit:
commit: 2ebb17717550607bcd85fb8cf7d24ac870e9d762 ("sched/core: Offload wakee task activation if it the wakee is descheduling")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
in testcase: will-it-scale
on test machine: 8 threads Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz with 16G memory
with following parameters:
nr_task: 100%
mode: thread
test: pthread_mutex1
cpufreq_governor: performance
ucode: 0x21
test-description: Will It Scale takes a testcase and runs it from 1 through to n parallel copies to see if the testcase will scale. It builds both a process and threads based test in order to see any differences between the two.
test-url: https://github.com/antonblanchard/will-it-scale
In addition to that, the commit also has significant impact on the following tests:
+------------------+--------------------------------------------------------------------------+
| testcase: change | lmbench3: lmbench3.AF_UNIX.sock.stream.bandwidth.MB/sec 5.1% improvement |
| test machine | 16 threads Intel(R) Xeon(R) CPU D-1541 @ 2.10GHz with 48G memory |
| test parameters | cpufreq_governor=performance |
| | mode=development |
| | nr_threads=50% |
| | test=UNIX |
| | test_memory_size=50% |
| | ucode=0x7000019 |
+------------------+--------------------------------------------------------------------------+
| testcase: change | vm-scalability: vm-scalability.throughput 4.6% improvement |
| test machine | 16 threads Intel(R) Xeon(R) E-2278G CPU @ 3.40GHz with 32G memory |
| test parameters | cpufreq_governor=performance |
| | runtime=300s |
| | size=2T |
| | test=shm-pread-seq-mt |
| | ucode=0xca |
+------------------+--------------------------------------------------------------------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen@...el.com>
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 run job.yaml
=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase/ucode:
gcc-9/performance/x86_64-rhel-7.6/thread/100%/debian-x86_64-20191114.cgz/lkp-ivb-d01/pthread_mutex1/will-it-scale/0x21
commit:
c6e7bd7afa ("sched/core: Optimize ttwu() spinning on p->on_cpu")
2ebb177175 ("sched/core: Offload wakee task activation if it the wakee is descheduling")
c6e7bd7afaeb3af5 2ebb17717550607bcd85fb8cf7d
---------------- ---------------------------
fail:runs %reproduction fail:runs
| | |
:4 25% 1:4 dmesg.RIP:find_vma
1:4 -25% :4 dmesg.RIP:loop
:4 25% 1:4 dmesg.RIP:poll_idle
:4 25% 1:4 dmesg.RIP:release_pages
:4 25% 1:4 kmsg.a562403>]usb_hcd_irq
1:4 -25% :4 kmsg.a9be0b>]usb_hcd_irq
:4 25% 1:4 kmsg.c867d3b>]usb_hcd_irq
:4 25% 1:4 kmsg.e2bf9>]usb_hcd_irq
1:4 -25% :4 kmsg.e6afaad>]usb_hcd_irq
1:4 -25% :4 kmsg.ef22>]usb_hcd_irq
%stddev %change %stddev
\ | \
1564377 -3.7% 1506585 will-it-scale.per_thread_ops
12515025 -3.7% 12052684 will-it-scale.workload
7295 ± 18% +32.3% 9651 ± 3% slabinfo.kmalloc-32.active_objs
7295 ± 18% +32.3% 9651 ± 3% slabinfo.kmalloc-32.num_objs
52712 ±167% -99.8% 122.25 ± 9% softirqs.CPU7.NET_RX
167833 ± 37% -96.0% 6770 ± 70% softirqs.NET_RX
8.17 -6.2 1.95 ± 2% mpstat.cpu.all.idle%
0.05 ± 39% -0.0 0.00 ± 92% mpstat.cpu.all.soft%
36.39 +4.6 40.97 mpstat.cpu.all.usr%
54.75 +2.3% 56.00 vmstat.cpu.sy
36.00 +11.8% 40.25 vmstat.cpu.us
879009 +9.8% 964967 vmstat.system.cs
80622 +438.9% 434480 vmstat.system.in
8567964 ± 11% -24.3% 6482942 ± 4% cpuidle.C1.time
7399663 ± 10% -46.7% 3944245 ± 5% cpuidle.C1.usage
4762729 ± 15% -76.7% 1108338 ± 4% cpuidle.C1E.time
2825633 ± 12% -92.5% 213227 ± 11% cpuidle.C1E.usage
1392828 ± 18% -89.8% 142380 ± 13% cpuidle.C3.usage
9138464 ± 19% -39.7% 5510711 ± 12% cpuidle.C6.time
49832321 -80.0% 9988732 ± 5% cpuidle.POLL.time
67398769 ± 2% -89.1% 7335934 ± 6% cpuidle.POLL.usage
54149 ± 3% +12.6% 60956 ± 5% sched_debug.cfs_rq:/.load.stddev
10821 ± 78% -121.0% -2277 sched_debug.cfs_rq:/.spread0.avg
-6726 +202.0% -20313 sched_debug.cfs_rq:/.spread0.min
16417766 +9.9% 18035507 sched_debug.cpu.nr_switches.avg
15873293 +10.9% 17597029 sched_debug.cpu.nr_switches.min
12.58 ± 14% -22.5% 9.75 ± 24% sched_debug.cpu.nr_uninterruptible.max
16413879 +9.9% 18031360 sched_debug.cpu.sched_count.avg
15869787 +10.9% 17594327 sched_debug.cpu.sched_count.min
8083678 +10.0% 8890426 sched_debug.cpu.sched_goidle.avg
7842348 +11.0% 8704700 sched_debug.cpu.sched_goidle.min
8254567 +9.8% 9067404 sched_debug.cpu.ttwu_count.avg
8516632 +10.5% 9406669 sched_debug.cpu.ttwu_count.max
96163 ±169% -99.8% 181.75 ± 3% interrupts.56:PCI-MSI.528392-edge.eth3-TxRx-7
1402 ± 11% +8.9e+06% 1.247e+08 interrupts.CAL:Function_call_interrupts
94.75 ± 23% +1.6e+07% 15469594 ± 2% interrupts.CPU0.CAL:Function_call_interrupts
2421597 ± 4% -91.6% 203339 ± 5% interrupts.CPU0.RES:Rescheduling_interrupts
208.75 ± 75% +7.4e+06% 15412781 interrupts.CPU1.CAL:Function_call_interrupts
2235968 ± 5% -91.6% 188736 ± 6% interrupts.CPU1.RES:Rescheduling_interrupts
126.00 ± 6% +1.2e+07% 15593440 ± 2% interrupts.CPU2.CAL:Function_call_interrupts
2283945 ± 6% -91.4% 195832 ± 2% interrupts.CPU2.RES:Rescheduling_interrupts
132.25 ± 4% +1.2e+07% 15737578 ± 3% interrupts.CPU3.CAL:Function_call_interrupts
2219149 ± 3% -90.9% 201796 ± 10% interrupts.CPU3.RES:Rescheduling_interrupts
228.50 ± 54% +6.9e+06% 15654017 ± 2% interrupts.CPU4.CAL:Function_call_interrupts
2366589 -91.9% 190886 ± 8% interrupts.CPU4.RES:Rescheduling_interrupts
357.75 ± 72% +4.3e+06% 15413624 ± 2% interrupts.CPU5.CAL:Function_call_interrupts
2251765 ± 3% -92.3% 172812 ± 7% interrupts.CPU5.RES:Rescheduling_interrupts
138.00 ± 6% +1.1e+07% 15629542 interrupts.CPU6.CAL:Function_call_interrupts
2225560 ± 4% -91.7% 185344 ± 7% interrupts.CPU6.RES:Rescheduling_interrupts
96163 ±169% -99.8% 181.75 ± 3% interrupts.CPU7.56:PCI-MSI.528392-edge.eth3-TxRx-7
116.50 ± 7% +1.4e+07% 15816683 ± 2% interrupts.CPU7.CAL:Function_call_interrupts
2361144 ± 3% -91.8% 194748 ± 8% interrupts.CPU7.RES:Rescheduling_interrupts
18365719 -91.7% 1533497 ± 4% interrupts.RES:Rescheduling_interrupts
103.25 ± 5% +159.1% 267.50 ± 5% interrupts.TLB:TLB_shootdowns
13.47 ± 3% -19.3% 10.86 ± 3% perf-stat.i.MPKI
1.746e+09 +1.9% 1.779e+09 perf-stat.i.branch-instructions
47675183 +1.8% 48541350 perf-stat.i.branch-misses
1.145e+08 ± 3% -18.3% 93535517 ± 3% perf-stat.i.cache-references
885445 +9.7% 971331 perf-stat.i.context-switches
3.43 -1.1% 3.39 perf-stat.i.cpi
2.155e+09 +3.4% 2.228e+09 perf-stat.i.dTLB-loads
1.73e+09 +5.6% 1.827e+09 perf-stat.i.dTLB-stores
5869850 ± 5% -16.5% 4900813 perf-stat.i.iTLB-load-misses
786437 ± 13% -30.9% 543649 ± 16% perf-stat.i.iTLB-loads
8.535e+09 +1.3% 8.642e+09 perf-stat.i.instructions
1492 ± 4% +20.6% 1798 perf-stat.i.instructions-per-iTLB-miss
0.29 +1.1% 0.30 perf-stat.i.ipc
720.16 +3.2% 742.92 perf-stat.i.metric.M/sec
13.41 ± 3% -19.3% 10.82 ± 3% perf-stat.overall.MPKI
3.42 -1.1% 3.39 perf-stat.overall.cpi
1457 ± 4% +21.0% 1763 perf-stat.overall.instructions-per-iTLB-miss
0.29 +1.1% 0.30 perf-stat.overall.ipc
205548 +5.0% 215927 perf-stat.overall.path-length
1.74e+09 +1.9% 1.773e+09 perf-stat.ps.branch-instructions
47519673 +1.8% 48383718 perf-stat.ps.branch-misses
1.141e+08 ± 3% -18.3% 93221019 ± 3% perf-stat.ps.cache-references
882476 +9.7% 968061 perf-stat.ps.context-switches
2.148e+09 +3.4% 2.221e+09 perf-stat.ps.dTLB-loads
1.724e+09 +5.6% 1.821e+09 perf-stat.ps.dTLB-stores
5850190 ± 5% -16.5% 4884334 perf-stat.ps.iTLB-load-misses
783812 ± 13% -30.9% 541830 ± 16% perf-stat.ps.iTLB-loads
8.507e+09 +1.3% 8.614e+09 perf-stat.ps.instructions
2.572e+12 +1.2% 2.602e+12 perf-stat.total.instructions
8.95 ± 2% -6.5 2.50 ± 3% perf-profile.calltrace.cycles-pp.try_to_wake_up.wake_up_q.futex_wake.do_futex.__x64_sys_futex
9.15 ± 2% -6.4 2.79 ± 3% perf-profile.calltrace.cycles-pp.wake_up_q.futex_wake.do_futex.__x64_sys_futex.do_syscall_64
22.31 -4.6 17.69 perf-profile.calltrace.cycles-pp.do_futex.__x64_sys_futex.do_syscall_64.entry_SYSCALL_64_after_hwframe.__lll_unlock_wake
21.97 -4.6 17.37 perf-profile.calltrace.cycles-pp.futex_wake.do_futex.__x64_sys_futex.do_syscall_64.entry_SYSCALL_64_after_hwframe
40.70 -4.6 36.13 perf-profile.calltrace.cycles-pp.__lll_unlock_wake
23.13 -4.6 18.56 perf-profile.calltrace.cycles-pp.__x64_sys_futex.do_syscall_64.entry_SYSCALL_64_after_hwframe.__lll_unlock_wake
30.54 -4.5 26.03 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__lll_unlock_wake
31.06 -4.5 26.59 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__lll_unlock_wake
2.81 ± 5% -2.4 0.40 ± 58% perf-profile.calltrace.cycles-pp.menu_select.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
3.15 ± 10% -1.9 1.28 ± 10% perf-profile.calltrace.cycles-pp.cpuidle_enter.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
3.11 ± 10% -1.8 1.26 ± 10% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry.start_secondary
1.41 -0.4 0.96 perf-profile.calltrace.cycles-pp.pick_next_task_fair.__sched_text_start.schedule_idle.do_idle.cpu_startup_entry
1.02 ± 2% -0.4 0.65 ± 2% perf-profile.calltrace.cycles-pp.set_next_entity.pick_next_task_fair.__sched_text_start.schedule_idle.do_idle
4.32 +0.2 4.52 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.__lll_unlock_wake
0.85 ± 4% +0.2 1.10 ± 8% perf-profile.calltrace.cycles-pp.unwind_next_frame.arch_stack_walk.stack_trace_save_tsk.__account_scheduler_latency.update_stats_enqueue_sleeper
4.13 +0.3 4.40 perf-profile.calltrace.cycles-pp.__sched_text_start.schedule.futex_wait_queue_me.futex_wait.do_futex
4.25 +0.3 4.55 perf-profile.calltrace.cycles-pp.schedule.futex_wait_queue_me.futex_wait.do_futex.__x64_sys_futex
3.69 ± 3% +0.3 4.00 ± 2% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.__lll_lock_wait
0.26 ±100% +0.3 0.58 ± 6% perf-profile.calltrace.cycles-pp.mark_wake_futex.futex_wake.do_futex.__x64_sys_futex.do_syscall_64
4.69 +0.4 5.05 perf-profile.calltrace.cycles-pp.futex_wait_queue_me.futex_wait.do_futex.__x64_sys_futex.do_syscall_64
1.49 ± 4% +0.5 2.04 ± 6% perf-profile.calltrace.cycles-pp.arch_stack_walk.stack_trace_save_tsk.__account_scheduler_latency.update_stats_enqueue_sleeper.enqueue_entity
1.65 ± 4% +0.6 2.27 ± 4% perf-profile.calltrace.cycles-pp.stack_trace_save_tsk.__account_scheduler_latency.update_stats_enqueue_sleeper.enqueue_entity.enqueue_task_fair
0.00 +0.6 0.62 ± 7% perf-profile.calltrace.cycles-pp.call_function_single_interrupt.tick_nohz_idle_enter.do_idle.cpu_startup_entry.start_secondary
2.11 ± 5% +0.6 2.73 ± 4% perf-profile.calltrace.cycles-pp.update_stats_enqueue_sleeper.enqueue_entity.enqueue_task_fair.activate_task.ttwu_do_activate
1.91 ± 6% +0.7 2.62 ± 4% perf-profile.calltrace.cycles-pp.__account_scheduler_latency.update_stats_enqueue_sleeper.enqueue_entity.enqueue_task_fair.activate_task
0.00 +0.7 0.72 ± 8% perf-profile.calltrace.cycles-pp.tick_nohz_idle_enter.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
5.89 ± 2% +0.8 6.71 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.futex_wait_setup.futex_wait.do_futex
7.28 ± 2% +0.9 8.22 perf-profile.calltrace.cycles-pp._raw_spin_lock.futex_wait_setup.futex_wait.do_futex.__x64_sys_futex
10.35 ± 3% +1.2 11.52 ± 3% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
10.44 ± 3% +1.2 11.63 ± 4% perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64
10.43 ± 3% +1.2 11.62 ± 3% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64
7.39 ± 4% +1.2 8.58 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.futex_wake.do_futex.__x64_sys_futex
0.00 +1.2 1.20 ± 4% perf-profile.calltrace.cycles-pp.ttwu_queue_wakelist.try_to_wake_up.wake_up_q.futex_wake.do_futex
12.97 +1.3 14.24 perf-profile.calltrace.cycles-pp.futex_wait_setup.futex_wait.do_futex.__x64_sys_futex.do_syscall_64
0.00 +1.3 1.30 ± 25% perf-profile.calltrace.cycles-pp.__sched_text_start.schedule_idle.do_idle.cpu_startup_entry.start_kernel
0.00 +1.3 1.32 ± 25% perf-profile.calltrace.cycles-pp.schedule_idle.do_idle.cpu_startup_entry.start_kernel.secondary_startup_64
12.23 ± 2% +1.4 13.61 perf-profile.calltrace.cycles-pp.secondary_startup_64
8.60 ± 3% +1.4 10.00 ± 2% perf-profile.calltrace.cycles-pp._raw_spin_lock.futex_wake.do_futex.__x64_sys_futex.do_syscall_64
18.68 +1.7 20.36 perf-profile.calltrace.cycles-pp.futex_wait.do_futex.__x64_sys_futex.do_syscall_64.entry_SYSCALL_64_after_hwframe
18.91 +1.7 20.63 perf-profile.calltrace.cycles-pp.do_futex.__x64_sys_futex.do_syscall_64.entry_SYSCALL_64_after_hwframe.__lll_lock_wait
19.56 +1.7 21.30 perf-profile.calltrace.cycles-pp.__x64_sys_futex.do_syscall_64.entry_SYSCALL_64_after_hwframe.__lll_lock_wait
25.94 +1.9 27.88 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__lll_lock_wait
26.43 +2.0 28.40 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__lll_lock_wait
37.00 +2.7 39.73 perf-profile.calltrace.cycles-pp.__lll_lock_wait
0.00 +3.6 3.57 ± 5% perf-profile.calltrace.cycles-pp.enqueue_entity.enqueue_task_fair.activate_task.ttwu_do_activate.sched_ttwu_pending
0.00 +4.0 4.04 ± 3% perf-profile.calltrace.cycles-pp.enqueue_task_fair.activate_task.ttwu_do_activate.sched_ttwu_pending.flush_smp_call_function_queue
0.00 +4.1 4.09 ± 4% perf-profile.calltrace.cycles-pp.activate_task.ttwu_do_activate.sched_ttwu_pending.flush_smp_call_function_queue.smp_call_function_single_interrupt
0.00 +4.1 4.11 ± 4% perf-profile.calltrace.cycles-pp.ttwu_do_activate.sched_ttwu_pending.flush_smp_call_function_queue.smp_call_function_single_interrupt.call_function_single_interrupt
0.00 +4.8 4.84 perf-profile.calltrace.cycles-pp.sched_ttwu_pending.flush_smp_call_function_queue.smp_call_function_single_interrupt.call_function_single_interrupt.finish_task_switch
0.00 +5.1 5.07 perf-profile.calltrace.cycles-pp.flush_smp_call_function_queue.smp_call_function_single_interrupt.call_function_single_interrupt.finish_task_switch.__sched_text_start
2.52 +5.2 7.70 ± 4% perf-profile.calltrace.cycles-pp.__sched_text_start.schedule_idle.do_idle.cpu_startup_entry.start_secondary
2.59 +5.3 7.85 ± 4% perf-profile.calltrace.cycles-pp.schedule_idle.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
0.00 +5.4 5.39 perf-profile.calltrace.cycles-pp.smp_call_function_single_interrupt.call_function_single_interrupt.finish_task_switch.__sched_text_start.schedule_idle
0.00 +6.2 6.25 ± 4% perf-profile.calltrace.cycles-pp.call_function_single_interrupt.finish_task_switch.__sched_text_start.schedule_idle.do_idle
0.00 +6.3 6.27 perf-profile.calltrace.cycles-pp.finish_task_switch.__sched_text_start.schedule_idle.do_idle.cpu_startup_entry
9.00 ± 2% -6.5 2.52 ± 2% perf-profile.children.cycles-pp.try_to_wake_up
9.15 ± 2% -6.3 2.80 ± 3% perf-profile.children.cycles-pp.wake_up_q
22.02 -4.6 17.42 perf-profile.children.cycles-pp.futex_wake
40.94 -4.3 36.66 perf-profile.children.cycles-pp.__lll_unlock_wake
41.31 -2.9 38.42 perf-profile.children.cycles-pp.do_futex
42.74 -2.8 39.91 perf-profile.children.cycles-pp.__x64_sys_futex
3.29 ± 3% -2.7 0.63 ± 8% perf-profile.children.cycles-pp.menu_select
56.69 -2.6 54.14 perf-profile.children.cycles-pp.do_syscall_64
57.68 -2.5 55.17 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
3.67 ± 10% -2.2 1.50 ± 10% perf-profile.children.cycles-pp.cpuidle_enter
3.64 ± 10% -2.1 1.50 ± 10% perf-profile.children.cycles-pp.cpuidle_enter_state
2.24 ± 4% -1.8 0.43 ± 8% perf-profile.children.cycles-pp.poll_idle
1.71 ± 7% -1.4 0.33 ± 12% perf-profile.children.cycles-pp.tick_nohz_get_sleep_length
1.35 ± 6% -1.1 0.24 ± 12% perf-profile.children.cycles-pp.tick_nohz_next_event
1.09 ± 8% -0.9 0.19 ± 14% perf-profile.children.cycles-pp.get_next_timer_interrupt
0.76 ± 9% -0.6 0.15 ± 18% perf-profile.children.cycles-pp.__next_timer_interrupt
1.91 -0.5 1.40 ± 3% perf-profile.children.cycles-pp.pick_next_task_fair
0.52 ± 6% -0.4 0.08 ± 5% perf-profile.children.cycles-pp.select_task_rq_fair
1.21 ± 2% -0.4 0.79 ± 3% perf-profile.children.cycles-pp.set_next_entity
1.73 ± 2% -0.4 1.35 ± 3% perf-profile.children.cycles-pp.update_load_avg
0.43 ± 13% -0.3 0.08 ± 17% perf-profile.children.cycles-pp._find_next_bit
0.36 ± 7% -0.3 0.10 ± 7% perf-profile.children.cycles-pp.tick_nohz_idle_exit
0.38 ± 3% -0.2 0.14 ± 8% perf-profile.children.cycles-pp.ktime_get
0.26 ± 11% -0.2 0.05 ± 58% perf-profile.children.cycles-pp.hrtimer_next_event_without
0.29 ± 3% -0.2 0.11 ± 8% perf-profile.children.cycles-pp.read_tsc
0.61 ± 2% -0.2 0.43 ± 3% perf-profile.children.cycles-pp.__update_load_avg_cfs_rq
0.40 ± 11% -0.2 0.22 ± 5% perf-profile.children.cycles-pp.check_preempt_curr
0.44 ± 9% -0.2 0.27 ± 5% perf-profile.children.cycles-pp.ttwu_do_wakeup
0.44 ± 4% -0.1 0.31 ± 3% perf-profile.children.cycles-pp.sched_clock_cpu
0.45 ± 4% -0.1 0.33 ± 3% perf-profile.children.cycles-pp.update_rq_clock
0.21 ± 14% -0.1 0.11 ± 4% perf-profile.children.cycles-pp.resched_curr
0.39 ± 5% -0.1 0.28 ± 5% perf-profile.children.cycles-pp.sched_clock
0.38 ± 5% -0.1 0.27 ± 6% perf-profile.children.cycles-pp.native_sched_clock
0.21 ± 6% -0.1 0.12 ± 10% perf-profile.children.cycles-pp.__list_del_entry_valid
0.24 ± 3% -0.1 0.16 ± 5% perf-profile.children.cycles-pp.pick_next_entity
0.15 ± 5% -0.1 0.09 ± 15% perf-profile.children.cycles-pp.place_entity
0.20 ± 12% -0.0 0.15 ± 4% perf-profile.children.cycles-pp.switch_mm_irqs_off
0.41 ± 5% -0.0 0.37 ± 4% perf-profile.children.cycles-pp.___perf_sw_event
0.05 ± 8% +0.0 0.07 ± 12% perf-profile.children.cycles-pp.__enqueue_entity
0.18 ± 6% +0.0 0.21 ± 3% perf-profile.children.cycles-pp.put_prev_task_fair
0.12 ± 8% +0.0 0.16 ± 7% perf-profile.children.cycles-pp.__calc_delta
0.12 ± 3% +0.0 0.15 ± 9% perf-profile.children.cycles-pp.switch_fpu_return
0.04 ± 57% +0.0 0.08 ± 12% perf-profile.children.cycles-pp.rb_erase
0.12 ± 17% +0.1 0.17 ± 12% perf-profile.children.cycles-pp.pick_next_task_idle
0.00 +0.1 0.06 ± 7% perf-profile.children.cycles-pp.rcu_irq_enter
0.00 +0.1 0.06 perf-profile.children.cycles-pp.wake_csd_func
0.00 +0.1 0.06 ± 6% perf-profile.children.cycles-pp.irq_work_run
0.00 +0.1 0.06 ± 6% perf-profile.children.cycles-pp.is_bpf_text_address
0.00 +0.1 0.06 ± 13% perf-profile.children.cycles-pp.is_module_text_address
0.00 +0.1 0.07 ± 7% perf-profile.children.cycles-pp.in_lock_functions
0.51 ± 4% +0.1 0.58 ± 6% perf-profile.children.cycles-pp.mark_wake_futex
0.00 +0.1 0.07 ± 17% perf-profile.children.cycles-pp.put_task_stack
0.00 +0.1 0.08 ± 11% perf-profile.children.cycles-pp.ftrace_graph_ret_addr
0.00 +0.1 0.08 ± 14% perf-profile.children.cycles-pp.irq_work_run_list
0.00 +0.1 0.08 ± 21% perf-profile.children.cycles-pp.get_stack_info
1.51 ± 2% +0.1 1.59 ± 3% perf-profile.children.cycles-pp.hash_futex
0.00 +0.1 0.09 ± 10% perf-profile.children.cycles-pp.__default_send_IPI_dest_field
0.04 ± 57% +0.1 0.13 ± 10% perf-profile.children.cycles-pp.__x86_indirect_thunk_rbx
0.00 +0.1 0.09 ± 7% perf-profile.children.cycles-pp.native_apic_mem_write
0.10 ± 12% +0.1 0.20 ± 9% perf-profile.children.cycles-pp.__unwind_start
0.42 ± 4% +0.1 0.52 ± 3% perf-profile.children.cycles-pp._raw_spin_lock_irqsave
0.09 ± 9% +0.1 0.21 ± 3% perf-profile.children.cycles-pp.in_sched_functions
0.60 +0.1 0.73 ± 3% perf-profile.children.cycles-pp.__switch_to
0.00 +0.1 0.13 ± 7% perf-profile.children.cycles-pp.tick_irq_enter
0.08 ± 10% +0.1 0.23 ± 3% perf-profile.children.cycles-pp.stack_access_ok
0.00 +0.2 0.15 ± 3% perf-profile.children.cycles-pp.interrupt_entry
0.00 +0.2 0.17 ± 6% perf-profile.children.cycles-pp._flat_send_IPI_mask
0.10 ± 8% +0.2 0.29 ± 10% perf-profile.children.cycles-pp.orc_find
0.15 ± 5% +0.2 0.39 ± 4% perf-profile.children.cycles-pp.kernel_text_address
0.00 +0.2 0.25 ± 5% perf-profile.children.cycles-pp.irq_enter
0.18 ± 7% +0.3 0.46 ± 8% perf-profile.children.cycles-pp.__orc_find
0.18 ± 7% +0.3 0.46 ± 4% perf-profile.children.cycles-pp.__kernel_text_address
4.27 +0.3 4.57 perf-profile.children.cycles-pp.schedule
0.23 ± 8% +0.3 0.56 ± 3% perf-profile.children.cycles-pp.unwind_get_return_address
0.07 ± 22% +0.3 0.41 ± 4% perf-profile.children.cycles-pp.native_irq_return_iret
4.70 +0.4 5.05 perf-profile.children.cycles-pp.futex_wait_queue_me
0.27 ± 5% +0.4 0.69 ± 2% perf-profile.children.cycles-pp.stack_trace_consume_entry_nosched
0.00 +0.4 0.42 ± 3% perf-profile.children.cycles-pp.generic_exec_single
0.00 +0.5 0.46 ± 3% perf-profile.children.cycles-pp.smp_call_function_single_async
8.04 ± 2% +0.5 8.54 ± 2% perf-profile.children.cycles-pp.entry_SYSCALL_64
0.00 +0.5 0.51 ± 4% perf-profile.children.cycles-pp.llist_add_batch
0.35 ± 4% +0.5 0.90 ± 4% perf-profile.children.cycles-pp.tick_nohz_idle_enter
0.88 ± 4% +1.1 1.93 ± 4% perf-profile.children.cycles-pp.unwind_next_frame
10.44 ± 3% +1.2 11.63 ± 4% perf-profile.children.cycles-pp.start_secondary
0.00 +1.2 1.21 ± 4% perf-profile.children.cycles-pp.ttwu_queue_wakelist
13.04 +1.3 14.31 perf-profile.children.cycles-pp.futex_wait_setup
12.23 ± 2% +1.3 13.53 ± 2% perf-profile.children.cycles-pp.do_idle
12.23 ± 2% +1.4 13.61 perf-profile.children.cycles-pp.secondary_startup_64
12.23 ± 2% +1.4 13.61 perf-profile.children.cycles-pp.cpu_startup_entry
18.69 +1.7 20.38 perf-profile.children.cycles-pp.futex_wait
4.22 ± 4% +1.9 6.12 ± 2% perf-profile.children.cycles-pp.enqueue_task_fair
4.25 ± 4% +1.9 6.17 ± 2% perf-profile.children.cycles-pp.activate_task
4.27 ± 4% +1.9 6.21 ± 2% perf-profile.children.cycles-pp.ttwu_do_activate
1.52 ± 5% +2.0 3.49 ± 3% perf-profile.children.cycles-pp.arch_stack_walk
1.66 ± 4% +2.0 3.64 ± 3% perf-profile.children.cycles-pp.stack_trace_save_tsk
3.77 ± 4% +2.1 5.83 ± 3% perf-profile.children.cycles-pp.enqueue_entity
13.37 ± 3% +2.1 15.42 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
16.48 ± 2% +2.1 18.57 perf-profile.children.cycles-pp._raw_spin_lock
2.12 ± 5% +2.3 4.40 ± 4% perf-profile.children.cycles-pp.update_stats_enqueue_sleeper
1.93 ± 5% +2.3 4.21 ± 4% perf-profile.children.cycles-pp.__account_scheduler_latency
37.42 +2.8 40.19 perf-profile.children.cycles-pp.__lll_lock_wait
3.04 +6.1 9.19 perf-profile.children.cycles-pp.schedule_idle
7.15 +6.3 13.47 perf-profile.children.cycles-pp.__sched_text_start
0.00 +6.5 6.47 perf-profile.children.cycles-pp.flush_smp_call_function_queue
0.10 ± 12% +6.5 6.58 perf-profile.children.cycles-pp.sched_ttwu_pending
0.46 ± 3% +6.7 7.18 perf-profile.children.cycles-pp.finish_task_switch
0.00 +6.9 6.89 perf-profile.children.cycles-pp.smp_call_function_single_interrupt
0.00 +7.8 7.82 perf-profile.children.cycles-pp.call_function_single_interrupt
2.84 -2.4 0.41 perf-profile.self.cycles-pp.try_to_wake_up
2.11 ± 4% -1.8 0.27 ± 13% perf-profile.self.cycles-pp.poll_idle
1.20 ± 3% -1.0 0.22 ± 10% perf-profile.self.cycles-pp.menu_select
0.42 ± 13% -0.3 0.08 ± 14% perf-profile.self.cycles-pp._find_next_bit
0.50 ± 4% -0.3 0.21 ± 9% perf-profile.self.cycles-pp.do_idle
0.30 ± 9% -0.2 0.05 ± 60% perf-profile.self.cycles-pp.__next_timer_interrupt
0.56 ± 3% -0.2 0.32 ± 5% perf-profile.self.cycles-pp.set_next_entity
0.60 ± 2% -0.2 0.41 ± 5% perf-profile.self.cycles-pp.__update_load_avg_cfs_rq
0.27 ± 4% -0.2 0.10 ± 8% perf-profile.self.cycles-pp.read_tsc
0.67 ± 4% -0.2 0.50 ± 5% perf-profile.self.cycles-pp.update_load_avg
0.45 ± 6% -0.2 0.29 ± 5% perf-profile.self.cycles-pp.enqueue_task_fair
0.29 ± 7% -0.1 0.14 ± 5% perf-profile.self.cycles-pp.update_rq_clock
0.21 ± 15% -0.1 0.11 ± 4% perf-profile.self.cycles-pp.resched_curr
0.21 ± 5% -0.1 0.11 ± 3% perf-profile.self.cycles-pp.pick_next_entity
0.36 ± 4% -0.1 0.26 ± 6% perf-profile.self.cycles-pp.native_sched_clock
0.21 ± 6% -0.1 0.11 ± 7% perf-profile.self.cycles-pp.__list_del_entry_valid
0.11 ± 3% -0.1 0.03 ±100% perf-profile.self.cycles-pp.cpuidle_enter_state
0.28 ± 3% -0.1 0.22 ± 5% perf-profile.self.cycles-pp.dequeue_task_fair
0.14 ± 11% -0.1 0.08 ± 15% perf-profile.self.cycles-pp.place_entity
0.37 ± 6% -0.0 0.33 ± 3% perf-profile.self.cycles-pp.___perf_sw_event
0.11 ± 4% -0.0 0.08 ± 14% perf-profile.self.cycles-pp.stack_trace_save_tsk
0.30 ± 4% -0.0 0.27 ± 6% perf-profile.self.cycles-pp.__x86_indirect_thunk_rax
0.16 ± 9% -0.0 0.13 perf-profile.self.cycles-pp.account_entity_dequeue
0.08 ± 8% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.put_prev_task_fair
0.07 ± 10% +0.0 0.10 ± 5% perf-profile.self.cycles-pp.schedule_idle
0.18 ± 5% +0.0 0.21 ± 7% perf-profile.self.cycles-pp.dequeue_entity
0.12 ± 12% +0.0 0.15 ± 5% perf-profile.self.cycles-pp.__calc_delta
0.20 ± 6% +0.0 0.23 ± 4% perf-profile.self.cycles-pp.futex_wait_queue_me
0.11 ± 4% +0.0 0.15 ± 10% perf-profile.self.cycles-pp.switch_fpu_return
0.01 ±173% +0.0 0.06 ± 14% perf-profile.self.cycles-pp.clear_buddies
0.25 ± 3% +0.0 0.30 ± 2% perf-profile.self.cycles-pp.__unqueue_futex
0.62 ± 2% +0.1 0.67 ± 2% perf-profile.self.cycles-pp.do_futex
0.00 +0.1 0.06 ± 14% perf-profile.self.cycles-pp.tick_irq_enter
0.00 +0.1 0.06 ± 7% perf-profile.self.cycles-pp.wake_csd_func
0.11 ± 4% +0.1 0.17 ± 3% perf-profile.self.cycles-pp.pick_next_task_fair
0.04 ± 58% +0.1 0.10 ± 7% perf-profile.self.cycles-pp.unwind_get_return_address
0.01 ±173% +0.1 0.07 ± 11% perf-profile.self.cycles-pp.rb_erase
0.00 +0.1 0.06 ± 6% perf-profile.self.cycles-pp.ftrace_graph_ret_addr
0.01 ±173% +0.1 0.08 ± 10% perf-profile.self.cycles-pp.tick_nohz_idle_enter
0.00 +0.1 0.07 ± 22% perf-profile.self.cycles-pp.put_task_stack
0.00 +0.1 0.08 ± 8% perf-profile.self.cycles-pp.__kernel_text_address
0.00 +0.1 0.08 ± 8% perf-profile.self.cycles-pp._flat_send_IPI_mask
1.47 ± 2% +0.1 1.56 ± 2% perf-profile.self.cycles-pp.hash_futex
0.00 +0.1 0.08 ± 5% perf-profile.self.cycles-pp.native_apic_mem_write
0.00 +0.1 0.09 ± 10% perf-profile.self.cycles-pp.__default_send_IPI_dest_field
0.06 ± 11% +0.1 0.15 ± 7% perf-profile.self.cycles-pp.in_sched_functions
0.40 ± 5% +0.1 0.49 ± 3% perf-profile.self.cycles-pp._raw_spin_lock_irqsave
0.01 ±173% +0.1 0.10 ± 8% perf-profile.self.cycles-pp.__x86_indirect_thunk_rbx
0.05 ± 9% +0.1 0.15 ± 9% perf-profile.self.cycles-pp.kernel_text_address
0.17 ± 8% +0.1 0.28 ± 5% perf-profile.self.cycles-pp.wake_up_q
0.04 ±100% +0.1 0.15 ± 7% perf-profile.self.cycles-pp.arch_stack_walk
0.07 ± 5% +0.1 0.20 ± 4% perf-profile.self.cycles-pp.stack_access_ok
0.58 +0.1 0.71 ± 3% perf-profile.self.cycles-pp.__switch_to
0.00 +0.1 0.15 ± 5% perf-profile.self.cycles-pp.call_function_single_interrupt
0.00 +0.2 0.15 ± 2% perf-profile.self.cycles-pp.interrupt_entry
0.10 ± 8% +0.2 0.27 ± 9% perf-profile.self.cycles-pp.orc_find
0.18 ± 18% +0.2 0.38 ± 13% perf-profile.self.cycles-pp.__account_scheduler_latency
0.00 +0.2 0.21 ± 2% perf-profile.self.cycles-pp.flush_smp_call_function_queue
2.46 ± 2% +0.2 2.69 ± 5% perf-profile.self.cycles-pp.futex_wake
2.80 +0.2 3.02 perf-profile.self.cycles-pp.__lll_lock_wait
0.09 ± 17% +0.2 0.32 perf-profile.self.cycles-pp.sched_ttwu_pending
3.20 ± 2% +0.2 3.44 ± 3% perf-profile.self.cycles-pp.futex_wait_setup
0.18 ± 7% +0.3 0.45 ± 9% perf-profile.self.cycles-pp.__orc_find
0.17 ± 8% +0.3 0.45 ± 3% perf-profile.self.cycles-pp.stack_trace_consume_entry_nosched
0.07 ± 22% +0.3 0.41 ± 5% perf-profile.self.cycles-pp.native_irq_return_iret
0.00 +0.3 0.34 ± 13% perf-profile.self.cycles-pp.ttwu_queue_wakelist
0.51 ± 5% +0.4 0.93 ± 4% perf-profile.self.cycles-pp.unwind_next_frame
7.17 ± 3% +0.4 7.60 ± 2% perf-profile.self.cycles-pp.entry_SYSCALL_64
0.00 +0.5 0.51 ± 4% perf-profile.self.cycles-pp.llist_add_batch
0.40 ± 2% +0.7 1.05 ± 3% perf-profile.self.cycles-pp.finish_task_switch
13.28 ± 3% +2.1 15.33 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
will-it-scale.per_thread_ops
1.6e+06 +----------------------------------------------------------------+
| |
1.58e+06 |.++.+. + +. +.+. +.+ .+.+ .+. .+. +.+.++ |
| + + + + + + + + ++.++ + + .++ ++ |
1.56e+06 |-+ ++ ++.+ + + |
| + |
1.54e+06 |-+ |
| |
1.52e+06 |-+ |
| O O |
1.5e+06 |-O O O O O O O O O |
| O O O O O O O O O O |
1.48e+06 |-+ O O O O O OO OO O O OO O O |
| O O O |
1.46e+06 +----------------------------------------------------------------+
will-it-scale.workload
1.27e+07 +----------------------------------------------------------------+
1.26e+07 |.+: +. + +. : +. +.+ + + .+. +. .+.++.+.++ + |
| + + + : + + + + + ++ + : + ++ |
1.25e+07 |-+ + : ++. : + + |
1.24e+07 |-+ + + + |
| |
1.23e+07 |-+ |
1.22e+07 |-+ |
1.21e+07 |-+ |
| O O |
1.2e+07 |-O O O O O O O O O O |
1.19e+07 |-+O O O O O O O O O |
| O O O O O OO OO O O OO O O |
1.18e+07 |-+ O O O |
1.17e+07 +----------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
***************************************************************************************************
lkp-bdw-de1: 16 threads Intel(R) Xeon(R) CPU D-1541 @ 2.10GHz with 48G memory
=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_threads/rootfs/tbox_group/test/test_memory_size/testcase/ucode:
gcc-9/performance/x86_64-rhel-7.6/development/50%/debian-x86_64-20191114.cgz/lkp-bdw-de1/UNIX/50%/lmbench3/0x7000019
commit:
c6e7bd7afa ("sched/core: Optimize ttwu() spinning on p->on_cpu")
2ebb177175 ("sched/core: Offload wakee task activation if it the wakee is descheduling")
c6e7bd7afaeb3af5 2ebb17717550607bcd85fb8cf7d
---------------- ---------------------------
%stddev %change %stddev
\ | \
27854 +5.1% 29272 lmbench3.AF_UNIX.sock.stream.bandwidth.MB/sec
21.14 ± 2% -9.2% 19.21 lmbench3.AF_UNIX.sock.stream.latency.us
171.33 ± 57% -37.4% 107.18 lmbench3.time.elapsed_time
171.33 ± 57% -37.4% 107.18 lmbench3.time.elapsed_time.max
1099 -12.4% 963.47 lmbench3.time.system_time
114.18 ± 82% -51.3% 55.56 ± 3% lmbench3.time.user_time
37759348 ± 8% -37.8% 23471465 lmbench3.time.voluntary_context_switches
19.59 ± 3% -2.8% 19.04 boot-time.dhcp
36767 ± 5% +227.1% 120272 ± 5% vmstat.system.in
8806 ± 16% -19.3% 7103 slabinfo.kmalloc-32.active_objs
8806 ± 16% -19.3% 7103 slabinfo.kmalloc-32.num_objs
14571053 ± 7% +72.1% 25080410 ± 3% cpuidle.C1.time
3733909 ± 5% +28.5% 4798750 ± 2% cpuidle.C1.usage
7.71e+08 ± 92% -84.0% 1.236e+08 ± 83% cpuidle.C1E.time
2313799 ± 56% +115.6% 4988567 ± 7% cpuidle.C1E.usage
59806456 ± 6% -71.0% 17318399 ± 2% cpuidle.POLL.time
27941426 ± 10% -76.8% 6496055 ± 2% cpuidle.POLL.usage
4512 ± 4% -7.9% 4156 proc-vmstat.nr_shmem
96678375 ± 2% +3.1% 99643960 proc-vmstat.numa_hit
96678375 ± 2% +3.1% 99643960 proc-vmstat.numa_local
3425 ± 47% -96.0% 136.50 ± 5% proc-vmstat.pgactivate
3.712e+08 ± 2% +2.9% 3.82e+08 proc-vmstat.pgalloc_normal
573423 ± 20% -14.3% 491235 proc-vmstat.pgfault
3.712e+08 ± 2% +2.9% 3.819e+08 proc-vmstat.pgfree
111.33 ± 11% +10.2% 122.63 perf-stat.i.MPKI
1018422 ± 31% +83.8% 1871714 perf-stat.i.iTLB-loads
0.43 ± 5% -6.3% 0.40 perf-stat.i.ipc
3764 ± 23% +18.0% 4442 perf-stat.i.minor-faults
3764 ± 23% +18.0% 4442 perf-stat.i.page-faults
78.37 ± 10% +16.4% 91.23 perf-stat.overall.MPKI
2.02 +0.1 2.13 perf-stat.overall.branch-miss-rate%
2.69 ± 3% +9.1% 2.93 perf-stat.overall.cpi
34.57 ± 7% -7.1% 32.13 perf-stat.overall.cycles-between-cache-misses
54.23 ± 2% -12.4 41.88 perf-stat.overall.iTLB-load-miss-rate%
7084 ± 3% -10.6% 6331 ± 2% perf-stat.overall.instructions-per-iTLB-miss
0.37 ± 3% -8.4% 0.34 perf-stat.overall.ipc
1012704 ± 30% +84.6% 1869854 perf-stat.ps.iTLB-loads
3739 ± 23% +17.9% 4410 perf-stat.ps.minor-faults
3739 ± 23% +17.9% 4410 perf-stat.ps.page-faults
1.213e+12 ± 14% -24.1% 9.208e+11 perf-stat.total.instructions
0.53 ± 17% +74.2% 0.92 ± 14% sched_debug.cfs_rq:/.nr_running.avg
0.49 ± 16% -40.7% 0.29 ± 34% sched_debug.cfs_rq:/.nr_running.stddev
620.31 ± 30% +44.9% 898.80 ± 5% sched_debug.cfs_rq:/.util_avg.avg
98.08 ± 57% +386.9% 477.56 ± 6% sched_debug.cfs_rq:/.util_est_enqueued.avg
513.58 ± 21% +88.7% 969.38 ± 17% sched_debug.cfs_rq:/.util_est_enqueued.max
0.04 ±173% +1100.0% 0.50 sched_debug.cfs_rq:/.util_est_enqueued.min
153.45 ± 29% +68.8% 259.10 ± 8% sched_debug.cfs_rq:/.util_est_enqueued.stddev
475089 ± 27% -65.4% 164406 ± 16% sched_debug.cpu.avg_idle.avg
961683 ± 6% -40.6% 571662 ± 6% sched_debug.cpu.avg_idle.max
226966 ± 17% -40.5% 135098 ± 7% sched_debug.cpu.avg_idle.stddev
0.53 ± 18% +57.8% 0.83 ± 36% sched_debug.cpu.clock.stddev
0.53 ± 18% +57.8% 0.83 ± 36% sched_debug.cpu.clock_task.stddev
789.47 ± 45% +130.5% 1819 ± 6% sched_debug.cpu.curr->pid.avg
776.40 ± 33% -46.4% 415.80 ± 31% sched_debug.cpu.curr->pid.stddev
0.58 ± 13% +82.4% 1.05 ± 19% sched_debug.cpu.nr_running.avg
17.25 ± 17% -37.7% 10.75 ± 28% sched_debug.cpu.nr_uninterruptible.max
41987 ± 26% -22.9% 32387 ± 4% softirqs.CPU0.SCHED
38670 ± 29% -33.1% 25858 ± 4% softirqs.CPU1.SCHED
12645 ±169% -98.7% 168.75 ± 29% softirqs.CPU11.NET_RX
40096 ± 30% -30.9% 27712 ± 2% softirqs.CPU11.SCHED
39769 ± 34% -30.6% 27619 ± 9% softirqs.CPU13.SCHED
29901 ± 5% -10.7% 26709 ± 3% softirqs.CPU14.SCHED
69467 ± 58% -99.8% 149.75 ± 7% softirqs.CPU15.NET_RX
36370 ± 25% -20.3% 28988 ± 9% softirqs.CPU15.SCHED
92873 ± 50% -53.2% 43426 ± 4% softirqs.CPU15.TIMER
39843 ± 31% -31.7% 27217 ± 3% softirqs.CPU2.SCHED
73109 ± 61% -40.6% 43398 ± 6% softirqs.CPU3.TIMER
30721 ± 12% -43.3% 17409 ± 59% softirqs.CPU4.RCU
38887 ± 35% -33.0% 26069 ± 4% softirqs.CPU4.SCHED
39018 ± 34% -29.2% 27637 ± 6% softirqs.CPU5.SCHED
34819 ± 21% -21.6% 27297 ± 5% softirqs.CPU7.SCHED
608506 ± 30% -26.8% 445287 softirqs.SCHED
24964 ±172% -99.7% 75.25 ± 36% interrupts.37:IR-PCI-MSI.2621444-edge.eth0-TxRx-3
103205 ± 59% -99.9% 65.50 ± 2% interrupts.41:IR-PCI-MSI.2621448-edge.eth0-TxRx-7
3280 ± 26% +3e+05% 9751612 interrupts.CAL:Function_call_interrupts
1014 ± 68% +59535.1% 604699 ± 3% interrupts.CPU0.CAL:Function_call_interrupts
23141 ± 5% -34.4% 15174 ± 6% interrupts.CPU0.RES:Rescheduling_interrupts
234.25 ± 68% +2.4e+05% 558579 ± 13% interrupts.CPU1.CAL:Function_call_interrupts
22907 ± 7% -39.0% 13965 ± 11% interrupts.CPU1.RES:Rescheduling_interrupts
109.50 ± 9% +5.3e+05% 580959 ± 10% interrupts.CPU10.CAL:Function_call_interrupts
24940 ± 13% -42.4% 14376 ± 9% interrupts.CPU10.RES:Rescheduling_interrupts
24964 ±172% -99.7% 75.25 ± 36% interrupts.CPU11.37:IR-PCI-MSI.2621444-edge.eth0-TxRx-3
106.25 ± 17% +5.5e+05% 583288 ± 17% interrupts.CPU11.CAL:Function_call_interrupts
28683 ± 19% -51.4% 13942 ± 18% interrupts.CPU11.RES:Rescheduling_interrupts
116.25 ± 10% +5.3e+05% 613414 interrupts.CPU12.CAL:Function_call_interrupts
25330 ± 5% -33.5% 16848 ± 26% interrupts.CPU12.RES:Rescheduling_interrupts
117.75 ± 10% +5.2e+05% 616142 ± 2% interrupts.CPU13.CAL:Function_call_interrupts
23262 ± 7% -39.1% 14161 ± 9% interrupts.CPU13.RES:Rescheduling_interrupts
107.75 ± 22% +5.8e+05% 620186 ± 3% interrupts.CPU14.CAL:Function_call_interrupts
20402 ± 8% -26.9% 14918 ± 6% interrupts.CPU14.RES:Rescheduling_interrupts
103205 ± 59% -99.9% 65.50 ± 2% interrupts.CPU15.41:IR-PCI-MSI.2621448-edge.eth0-TxRx-7
115.25 ± 3% +5.2e+05% 600664 ± 5% interrupts.CPU15.CAL:Function_call_interrupts
46830 ± 52% -69.3% 14377 ± 15% interrupts.CPU15.RES:Rescheduling_interrupts
355.00 ± 73% +1.8e+05% 626144 ± 4% interrupts.CPU2.CAL:Function_call_interrupts
23992 ± 7% -38.2% 14815 ± 4% interrupts.CPU2.RES:Rescheduling_interrupts
108.75 ± 8% +5.7e+05% 624218 interrupts.CPU3.CAL:Function_call_interrupts
24539 ± 3% -38.0% 15218 ± 4% interrupts.CPU3.RES:Rescheduling_interrupts
108.75 ± 17% +5.5e+05% 602705 ± 5% interrupts.CPU4.CAL:Function_call_interrupts
23504 ± 3% -36.3% 14967 ± 8% interrupts.CPU4.RES:Rescheduling_interrupts
353.25 ±127% +1.8e+05% 623711 ± 5% interrupts.CPU5.CAL:Function_call_interrupts
24063 ± 9% -36.8% 15218 ± 5% interrupts.CPU5.RES:Rescheduling_interrupts
125.00 ± 52% +5e+05% 624097 interrupts.CPU6.CAL:Function_call_interrupts
102.25 ± 6% +6.1e+05% 627198 ± 3% interrupts.CPU7.CAL:Function_call_interrupts
25608 ± 8% -42.6% 14697 ± 7% interrupts.CPU7.RES:Rescheduling_interrupts
105.00 ± 5% +5.9e+05% 623090 ± 5% interrupts.CPU8.CAL:Function_call_interrupts
24989 ± 6% -34.9% 16266 ± 14% interrupts.CPU8.RES:Rescheduling_interrupts
101.50 ± 7% +6.1e+05% 622512 ± 2% interrupts.CPU9.CAL:Function_call_interrupts
24250 ± 15% -39.9% 14570 ± 3% interrupts.CPU9.RES:Rescheduling_interrupts
407214 ± 4% -41.4% 238607 ± 6% interrupts.RES:Rescheduling_interrupts
0.43 ± 57% +0.2 0.61 ± 3% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64
0.45 ± 57% +0.2 0.64 perf-profile.calltrace.cycles-pp.syscall_return_via_sysret
0.00 +0.6 0.62 ± 4% perf-profile.calltrace.cycles-pp.__sched_text_start.schedule_idle.do_idle.cpu_startup_entry.start_secondary
0.00 +0.6 0.64 ± 5% perf-profile.calltrace.cycles-pp.schedule_idle.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
1.85 ±129% -1.5 0.40 ± 13% perf-profile.children.cycles-pp.smp_apic_timer_interrupt
1.07 ±100% -0.9 0.18 ± 7% perf-profile.children.cycles-pp.menu_select
0.72 ±115% -0.6 0.15 ± 31% perf-profile.children.cycles-pp.start_kernel
0.65 ±106% -0.6 0.09 perf-profile.children.cycles-pp.tick_nohz_get_sleep_length
0.52 ±111% -0.5 0.06 ± 6% perf-profile.children.cycles-pp.tick_nohz_next_event
0.43 ±109% -0.4 0.05 ± 8% perf-profile.children.cycles-pp.get_next_timer_interrupt
0.44 ±119% -0.3 0.09 ± 42% perf-profile.children.cycles-pp.irq_exit
0.36 ±109% -0.3 0.08 ± 48% perf-profile.children.cycles-pp.__softirqentry_text_start
0.11 ± 49% -0.1 0.04 ± 58% perf-profile.children.cycles-pp.sched_clock_cpu
0.04 ± 58% +0.0 0.07 ± 14% perf-profile.children.cycles-pp.tick_nohz_idle_enter
0.20 ± 57% +0.1 0.28 ± 2% perf-profile.children.cycles-pp.__check_heap_object
0.43 ± 57% +0.2 0.61 ± 3% perf-profile.children.cycles-pp.entry_SYSCALL_64
0.51 ± 57% +0.2 0.73 ± 2% perf-profile.children.cycles-pp.syscall_return_via_sysret
0.02 ±173% +0.3 0.31 ± 63% perf-profile.children.cycles-pp.write
0.00 +0.3 0.30 ± 64% perf-profile.children.cycles-pp._fini
0.00 +0.3 0.30 ± 64% perf-profile.children.cycles-pp.devkmsg_write.cold
0.00 +0.3 0.30 ± 64% perf-profile.children.cycles-pp.devkmsg_emit
0.31 ± 58% +0.4 0.68 ± 4% perf-profile.children.cycles-pp.schedule_idle
0.17 ±115% +0.4 0.60 ± 37% perf-profile.children.cycles-pp.ret_from_fork
0.00 +0.4 0.43 ± 5% perf-profile.children.cycles-pp.flush_smp_call_function_queue
0.17 ±118% +0.4 0.60 ± 37% perf-profile.children.cycles-pp.kthread
0.00 +0.4 0.44 ± 5% perf-profile.children.cycles-pp.sched_ttwu_pending
0.01 ±173% +0.4 0.46 ± 5% perf-profile.children.cycles-pp.finish_task_switch
0.14 ±152% +0.5 0.60 ± 37% perf-profile.children.cycles-pp.worker_thread
0.13 ±152% +0.5 0.60 ± 37% perf-profile.children.cycles-pp.process_one_work
0.00 +0.5 0.46 ± 6% perf-profile.children.cycles-pp.smp_call_function_single_interrupt
0.12 ±150% +0.5 0.59 ± 38% perf-profile.children.cycles-pp.drm_fb_helper_dirty_work
0.12 ±150% +0.5 0.60 ± 37% perf-profile.children.cycles-pp.memcpy_erms
0.00 +0.5 0.53 ± 5% perf-profile.children.cycles-pp.call_function_single_interrupt
30.52 ± 57% +10.9 41.47 perf-profile.children.cycles-pp.copy_user_enhanced_fast_string
0.31 ± 88% -0.2 0.06 ± 11% perf-profile.self.cycles-pp.menu_select
0.00 +0.1 0.07 ± 10% perf-profile.self.cycles-pp.finish_task_switch
0.18 ± 57% +0.1 0.25 ± 3% perf-profile.self.cycles-pp.__alloc_skb
0.19 ± 57% +0.1 0.27 ± 3% perf-profile.self.cycles-pp.__check_heap_object
0.43 ± 57% +0.2 0.61 ± 3% perf-profile.self.cycles-pp.entry_SYSCALL_64
0.51 ± 57% +0.2 0.73 ± 2% perf-profile.self.cycles-pp.syscall_return_via_sysret
0.12 ±150% +0.5 0.59 ± 37% perf-profile.self.cycles-pp.memcpy_erms
30.30 ± 57% +10.9 41.22 perf-profile.self.cycles-pp.copy_user_enhanced_fast_string
***************************************************************************************************
lkp-cfl-e1: 16 threads Intel(R) Xeon(R) E-2278G CPU @ 3.40GHz with 32G memory
=========================================================================================
compiler/cpufreq_governor/kconfig/rootfs/runtime/size/tbox_group/test/testcase/ucode:
gcc-9/performance/x86_64-rhel-7.6/debian-x86_64-20191114.cgz/300s/2T/lkp-cfl-e1/shm-pread-seq-mt/vm-scalability/0xca
commit:
c6e7bd7afa ("sched/core: Optimize ttwu() spinning on p->on_cpu")
2ebb177175 ("sched/core: Offload wakee task activation if it the wakee is descheduling")
c6e7bd7afaeb3af5 2ebb17717550607bcd85fb8cf7d
---------------- ---------------------------
fail:runs %reproduction fail:runs
| | |
4:4 59% 7:4 perf-profile.calltrace.cycles-pp.sync_regs.error_entry
5:4 65% 7:4 perf-profile.calltrace.cycles-pp.error_entry
0:4 2% 0:4 perf-profile.children.cycles-pp.error_exit
6:4 42% 8:4 perf-profile.children.cycles-pp.error_entry
0:4 5% 1:4 perf-profile.self.cycles-pp.error_entry
%stddev %change %stddev
\ | \
1.33 ± 4% +11.2% 1.48 ± 3% vm-scalability.free_time
851611 +4.6% 890826 vm-scalability.median
13614520 +4.6% 14242306 vm-scalability.throughput
200.41 -3.5% 193.31 vm-scalability.time.elapsed_time
200.41 -3.5% 193.31 vm-scalability.time.elapsed_time.max
1404 -9.2% 1275 vm-scalability.time.system_time
45736309 -3.2% 44254910 vm-scalability.time.voluntary_context_switches
11.69 -1.1% 11.56 boot-time.dhcp
1345 -75.6% 328.25 ±173% meminfo.Mlocked
0.03 ± 8% -0.0 0.02 mpstat.cpu.all.iowait%
0.00 ± 47% +0.0 0.01 ± 33% mpstat.cpu.all.soft%
37.00 +6.1% 39.25 vmstat.cpu.us
38400 +173.5% 105030 vmstat.system.in
473214 +5.6% 499701 ± 2% proc-vmstat.nr_active_anon
336.00 -75.6% 82.00 ±173% proc-vmstat.nr_mlock
473214 +5.6% 499701 ± 2% proc-vmstat.nr_zone_active_anon
31263826 ± 13% -79.6% 6387902 ± 27% cpuidle.C1E.time
13122053 ± 62% -96.8% 423713 ± 26% cpuidle.C3.time
164213 ± 76% -98.9% 1852 ± 7% cpuidle.C3.usage
3.522e+08 ± 3% -68.4% 1.114e+08 ± 8% cpuidle.C6.time
393571 ± 2% -69.8% 118841 ± 9% cpuidle.C6.usage
15947522 ± 85% +1925.1% 3.23e+08 cpuidle.C8.time
17123 ± 85% +1808.7% 326826 cpuidle.C8.usage
1.433e+08 -15.2% 1.215e+08 cpuidle.POLL.time
44000720 -32.7% 29624016 cpuidle.POLL.usage
413.56 ± 4% +36.0% 562.25 ± 21% sched_debug.cfs_rq:/.load_avg.max
34.44 ± 18% -37.4% 21.56 ± 12% sched_debug.cfs_rq:/.load_avg.min
107.86 ± 7% +49.8% 161.61 ± 13% sched_debug.cfs_rq:/.load_avg.stddev
0.88 ± 3% -22.1% 0.68 ± 4% sched_debug.cfs_rq:/.nr_running.avg
1570 ± 3% -11.8% 1384 ± 4% sched_debug.cfs_rq:/.runnable_avg.avg
3386 ± 8% -14.9% 2883 ± 8% sched_debug.cfs_rq:/.runnable_avg.max
755.62 ± 14% -31.4% 518.62 ± 20% sched_debug.cfs_rq:/.runnable_avg.min
874.96 ± 3% -22.8% 675.27 ± 3% sched_debug.cfs_rq:/.util_avg.avg
1603 ± 7% -14.2% 1375 ± 7% sched_debug.cfs_rq:/.util_avg.max
327.44 ± 23% -46.9% 174.00 ± 36% sched_debug.cfs_rq:/.util_avg.min
631.63 ± 2% -32.3% 427.44 ± 5% sched_debug.cfs_rq:/.util_est_enqueued.avg
1299 ± 10% -19.9% 1040 ± 3% sched_debug.cfs_rq:/.util_est_enqueued.max
298.71 ± 9% -17.5% 246.55 ± 8% sched_debug.cfs_rq:/.util_est_enqueued.stddev
48852 ± 12% +465.2% 276109 ± 3% sched_debug.cpu.avg_idle.avg
299441 ± 23% +71.3% 513046 ± 12% sched_debug.cpu.avg_idle.max
6887 ± 54% +2540.0% 181823 ± 5% sched_debug.cpu.avg_idle.min
2043 -23.5% 1563 ± 8% sched_debug.cpu.curr->pid.avg
0.95 ± 5% -20.5% 0.76 ± 2% sched_debug.cpu.nr_running.avg
3142 ± 6% -29.6% 2212 ± 4% sched_debug.cpu.ttwu_local.avg
3847 ± 4% -26.8% 2818 ± 6% sched_debug.cpu.ttwu_local.max
2095 ± 4% -37.4% 1311 ± 12% sched_debug.cpu.ttwu_local.min
452.04 ± 3% -15.4% 382.27 ± 9% sched_debug.cpu.ttwu_local.stddev
23.47 -4.9% 22.33 perf-stat.i.MPKI
1.466e+10 +3.2% 1.512e+10 perf-stat.i.branch-instructions
0.27 -0.0 0.26 perf-stat.i.branch-miss-rate%
35079947 -3.3% 33932860 perf-stat.i.branch-misses
4.87 ± 2% +0.5 5.34 perf-stat.i.cache-miss-rate%
22324938 +7.2% 23942996 ± 2% perf-stat.i.cache-misses
1.159e+09 -2.0% 1.135e+09 perf-stat.i.cache-references
1.14 -4.5% 1.09 perf-stat.i.cpi
5.678e+10 -1.3% 5.604e+10 perf-stat.i.cpu-cycles
483.63 ± 7% -31.2% 332.90 ± 4% perf-stat.i.cpu-migrations
3178 -9.1% 2888 ± 2% perf-stat.i.cycles-between-cache-misses
8390702 +3.2% 8663324 perf-stat.i.dTLB-load-misses
1.384e+10 +3.1% 1.427e+10 perf-stat.i.dTLB-loads
1861136 +2.8% 1912345 perf-stat.i.dTLB-store-misses
2.847e+09 +2.6% 2.92e+09 perf-stat.i.dTLB-stores
5273728 -7.3% 4886534 perf-stat.i.iTLB-load-misses
300994 +11.6% 335774 perf-stat.i.iTLB-loads
4.801e+10 +3.1% 4.947e+10 perf-stat.i.instructions
12131 ± 3% +19.0% 14438 perf-stat.i.instructions-per-iTLB-miss
0.91 +4.7% 0.95 perf-stat.i.ipc
3.55 -1.3% 3.50 perf-stat.i.metric.GHz
0.06 ± 6% -13.9% 0.05 ± 3% perf-stat.i.metric.K/sec
2030 +3.0% 2090 perf-stat.i.metric.M/sec
1837644 +3.0% 1892278 perf-stat.i.minor-faults
11223565 +3.4% 11602002 perf-stat.i.node-stores
1837644 +3.0% 1892278 perf-stat.i.page-faults
24.14 -4.9% 22.94 perf-stat.overall.MPKI
0.24 -0.0 0.22 perf-stat.overall.branch-miss-rate%
1.93 +0.2 2.11 ± 2% perf-stat.overall.cache-miss-rate%
1.18 -4.2% 1.13 perf-stat.overall.cpi
2542 -7.9% 2341 ± 2% perf-stat.overall.cycles-between-cache-misses
9103 +11.2% 10127 perf-stat.overall.instructions-per-iTLB-miss
0.85 +4.4% 0.88 perf-stat.overall.ipc
1.458e+10 +3.2% 1.504e+10 perf-stat.ps.branch-instructions
34918363 -3.3% 33760716 perf-stat.ps.branch-misses
22218390 +7.2% 23822438 ± 2% perf-stat.ps.cache-misses
1.153e+09 -2.1% 1.129e+09 perf-stat.ps.cache-references
5.649e+10 -1.3% 5.574e+10 perf-stat.ps.cpu-cycles
482.86 ± 7% -31.3% 331.59 ± 4% perf-stat.ps.cpu-migrations
8347828 +3.2% 8617195 perf-stat.ps.dTLB-load-misses
1.377e+10 +3.1% 1.419e+10 perf-stat.ps.dTLB-loads
1851614 +2.7% 1902131 perf-stat.ps.dTLB-store-misses
2.833e+09 +2.5% 2.905e+09 perf-stat.ps.dTLB-stores
5246720 -7.4% 4860447 perf-stat.ps.iTLB-load-misses
299445 +11.5% 333986 perf-stat.ps.iTLB-loads
4.776e+10 +3.0% 4.921e+10 perf-stat.ps.instructions
1828228 +2.9% 1882160 perf-stat.ps.minor-faults
11166367 +3.3% 11539989 perf-stat.ps.node-stores
1828228 +2.9% 1882160 perf-stat.ps.page-faults
253.50 ± 23% +39.1% 352.50 ± 18% interrupts.132:IR-PCI-MSI.2097153-edge.eth1-TxRx-0
4397 ± 7% +3.2e+05% 14161297 ± 2% interrupts.CAL:Function_call_interrupts
302.25 ± 98% +3e+05% 908756 ± 3% interrupts.CPU0.CAL:Function_call_interrupts
402913 -9.5% 364602 interrupts.CPU0.LOC:Local_timer_interrupts
48441 ± 21% -65.9% 16507 ± 5% interrupts.CPU0.RES:Rescheduling_interrupts
253.50 ± 23% +39.1% 352.50 ± 18% interrupts.CPU1.132:IR-PCI-MSI.2097153-edge.eth1-TxRx-0
174.50 ± 9% +5.2e+05% 900085 ± 3% interrupts.CPU1.CAL:Function_call_interrupts
403045 -9.5% 364819 interrupts.CPU1.LOC:Local_timer_interrupts
61990 ± 2% -69.5% 18915 ± 5% interrupts.CPU1.RES:Rescheduling_interrupts
201.75 ± 6% +4.5e+05% 912063 ± 2% interrupts.CPU10.CAL:Function_call_interrupts
403200 -9.5% 364987 interrupts.CPU10.LOC:Local_timer_interrupts
60879 ± 10% -67.7% 19675 ± 11% interrupts.CPU10.RES:Rescheduling_interrupts
195.00 ± 5% +4.5e+05% 876511 interrupts.CPU11.CAL:Function_call_interrupts
403082 -9.3% 365585 interrupts.CPU11.LOC:Local_timer_interrupts
65942 ± 9% -69.3% 20250 ± 4% interrupts.CPU11.RES:Rescheduling_interrupts
63.00 ± 18% +59.9% 100.75 ± 20% interrupts.CPU11.TLB:TLB_shootdowns
222.75 ± 7% +3.9e+05% 858038 interrupts.CPU12.CAL:Function_call_interrupts
403047 -9.5% 364864 interrupts.CPU12.LOC:Local_timer_interrupts
71543 ± 8% -68.8% 22318 ± 8% interrupts.CPU12.RES:Rescheduling_interrupts
207.25 ± 6% +4.2e+05% 873798 ± 2% interrupts.CPU13.CAL:Function_call_interrupts
402881 -9.5% 364551 interrupts.CPU13.LOC:Local_timer_interrupts
11353 ± 2% -39.1% 6910 ± 34% interrupts.CPU13.NMI:Non-maskable_interrupts
11353 ± 2% -39.1% 6910 ± 34% interrupts.CPU13.PMI:Performance_monitoring_interrupts
77673 ± 16% -73.0% 20942 ± 6% interrupts.CPU13.RES:Rescheduling_interrupts
481.50 ± 58% +1.8e+05% 868322 ± 2% interrupts.CPU14.CAL:Function_call_interrupts
402975 -9.5% 364713 interrupts.CPU14.LOC:Local_timer_interrupts
66362 ± 6% -67.8% 21395 ± 9% interrupts.CPU14.RES:Rescheduling_interrupts
207.50 ± 7% +4.2e+05% 881926 interrupts.CPU15.CAL:Function_call_interrupts
403128 -9.1% 366525 interrupts.CPU15.LOC:Local_timer_interrupts
58663 ± 4% -68.7% 18340 ± 3% interrupts.CPU15.RES:Rescheduling_interrupts
409.00 ± 97% +2.2e+05% 902382 ± 2% interrupts.CPU2.CAL:Function_call_interrupts
402903 -9.4% 364940 interrupts.CPU2.LOC:Local_timer_interrupts
72090 ± 2% -70.7% 21128 ± 4% interrupts.CPU2.RES:Rescheduling_interrupts
740.25 ± 43% +1.2e+05% 871182 ± 3% interrupts.CPU3.CAL:Function_call_interrupts
402973 -9.3% 365372 interrupts.CPU3.LOC:Local_timer_interrupts
61278 ± 8% -65.9% 20895 ± 8% interrupts.CPU3.RES:Rescheduling_interrupts
73.75 ± 14% +42.0% 104.75 ± 23% interrupts.CPU3.TLB:TLB_shootdowns
199.75 ± 7% +4.4e+05% 875414 ± 4% interrupts.CPU4.CAL:Function_call_interrupts
402768 -9.4% 364982 interrupts.CPU4.LOC:Local_timer_interrupts
65494 ± 8% -68.9% 20383 ± 8% interrupts.CPU4.RES:Rescheduling_interrupts
67.75 ± 30% +46.9% 99.50 ± 8% interrupts.CPU4.TLB:TLB_shootdowns
188.75 ± 5% +4.7e+05% 888187 interrupts.CPU5.CAL:Function_call_interrupts
402721 -9.5% 364443 interrupts.CPU5.LOC:Local_timer_interrupts
73780 ± 4% -72.2% 20527 ± 6% interrupts.CPU5.RES:Rescheduling_interrupts
199.25 ± 6% +4.4e+05% 884019 interrupts.CPU6.CAL:Function_call_interrupts
402790 -9.5% 364446 interrupts.CPU6.LOC:Local_timer_interrupts
59000 ± 15% -63.2% 21697 ± 6% interrupts.CPU6.RES:Rescheduling_interrupts
232.75 ± 17% +3.8e+05% 886831 ± 3% interrupts.CPU7.CAL:Function_call_interrupts
402926 -9.1% 366310 interrupts.CPU7.LOC:Local_timer_interrupts
52031 ± 9% -64.0% 18753 ± 6% interrupts.CPU7.RES:Rescheduling_interrupts
223.25 ± 21% +4e+05% 888773 ± 3% interrupts.CPU8.CAL:Function_call_interrupts
402910 -9.5% 364567 interrupts.CPU8.LOC:Local_timer_interrupts
60836 ± 12% -65.0% 21286 ± 11% interrupts.CPU8.RES:Rescheduling_interrupts
212.25 ± 10% +4.2e+05% 885002 ± 3% interrupts.CPU9.CAL:Function_call_interrupts
402785 -9.4% 364751 interrupts.CPU9.LOC:Local_timer_interrupts
62642 ± 8% -68.3% 19875 ± 11% interrupts.CPU9.RES:Rescheduling_interrupts
6447051 -9.4% 5840463 interrupts.LOC:Local_timer_interrupts
1018650 -68.3% 322891 ± 2% interrupts.RES:Rescheduling_interrupts
1.02 ± 23% +0.2 1.21 ± 2% perf-profile.calltrace.cycles-pp.finish_fault.do_fault.__handle_mm_fault.handle_mm_fault.do_user_addr_fault
0.45 ± 57% +0.2 0.64 perf-profile.calltrace.cycles-pp.page_add_file_rmap.alloc_set_pte.filemap_map_pages.do_fault.__handle_mm_fault
0.92 ± 22% +0.2 1.10 ± 2% perf-profile.calltrace.cycles-pp.alloc_set_pte.finish_fault.do_fault.__handle_mm_fault.handle_mm_fault
1.26 ± 23% +0.2 1.50 perf-profile.calltrace.cycles-pp.find_get_entry.find_lock_entry.shmem_getpage_gfp.shmem_fault.__do_fault
0.81 ± 18% +0.2 1.06 ± 3% perf-profile.calltrace.cycles-pp.PageHuge.filemap_map_pages.do_fault.__handle_mm_fault.handle_mm_fault
0.99 ± 22% +0.3 1.25 ± 2% perf-profile.calltrace.cycles-pp.xas_find.filemap_map_pages.do_fault.__handle_mm_fault.handle_mm_fault
0.65 ± 57% +0.3 0.95 ± 3% perf-profile.calltrace.cycles-pp.up_read.do_user_addr_fault.page_fault
1.53 ± 22% +0.3 1.84 perf-profile.calltrace.cycles-pp.alloc_set_pte.filemap_map_pages.do_fault.__handle_mm_fault.handle_mm_fault
0.53 ± 57% +0.3 0.84 ± 2% perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry
0.60 ± 57% +0.3 0.92 ± 3% perf-profile.calltrace.cycles-pp.xas_load.xas_find.filemap_map_pages.do_fault.__handle_mm_fault
2.14 ± 22% +0.5 2.62 perf-profile.calltrace.cycles-pp.__account_scheduler_latency.enqueue_entity.enqueue_task_fair.activate_task.ttwu_do_activate
0.95 ± 57% +0.5 1.49 ± 5% perf-profile.calltrace.cycles-pp.down_read_trylock.do_user_addr_fault.page_fault
2.45 ± 20% +0.5 2.99 perf-profile.calltrace.cycles-pp.unlock_page.filemap_map_pages.do_fault.__handle_mm_fault.handle_mm_fault
0.47 ±100% +0.6 1.05 ± 6% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_kernel.secondary_startup_64
0.47 ±100% +0.6 1.05 ± 6% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_kernel.secondary_startup_64
0.47 ±100% +0.6 1.05 ± 6% perf-profile.calltrace.cycles-pp.start_kernel.secondary_startup_64
0.00 +0.8 0.77 ± 3% perf-profile.calltrace.cycles-pp.enqueue_entity.enqueue_task_fair.activate_task.ttwu_do_activate.sched_ttwu_pending
0.00 +0.8 0.81 ± 3% perf-profile.calltrace.cycles-pp.enqueue_task_fair.activate_task.ttwu_do_activate.sched_ttwu_pending.flush_smp_call_function_queue
0.00 +0.8 0.81 ± 3% perf-profile.calltrace.cycles-pp.ttwu_do_activate.sched_ttwu_pending.flush_smp_call_function_queue.smp_call_function_single_interrupt.call_function_single_interrupt
0.00 +0.8 0.81 ± 3% perf-profile.calltrace.cycles-pp.activate_task.ttwu_do_activate.sched_ttwu_pending.flush_smp_call_function_queue.smp_call_function_single_interrupt
0.00 +0.9 0.88 ± 2% perf-profile.calltrace.cycles-pp.sched_ttwu_pending.flush_smp_call_function_queue.smp_call_function_single_interrupt.call_function_single_interrupt.finish_task_switch
0.00 +0.9 0.92 ± 3% perf-profile.calltrace.cycles-pp.flush_smp_call_function_queue.smp_call_function_single_interrupt.call_function_single_interrupt.finish_task_switch.__sched_text_start
0.00 +1.0 1.01 ± 2% perf-profile.calltrace.cycles-pp.smp_call_function_single_interrupt.call_function_single_interrupt.finish_task_switch.__sched_text_start.schedule_idle
0.00 +1.1 1.12 ± 2% perf-profile.calltrace.cycles-pp.call_function_single_interrupt.finish_task_switch.__sched_text_start.schedule_idle.do_idle
0.00 +1.1 1.14 ± 3% perf-profile.calltrace.cycles-pp.finish_task_switch.__sched_text_start.schedule_idle.do_idle.cpu_startup_entry
1.11 ± 21% +1.2 2.30 perf-profile.calltrace.cycles-pp.__sched_text_start.schedule_idle.do_idle.cpu_startup_entry.start_secondary
1.15 ± 21% +1.2 2.34 ± 2% perf-profile.calltrace.cycles-pp.schedule_idle.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
11.57 ± 20% +2.1 13.63 perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
11.59 ± 20% +2.1 13.68 perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64
11.59 ± 20% +2.1 13.67 perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64
12.25 ± 21% +2.5 14.73 perf-profile.calltrace.cycles-pp.secondary_startup_64
0.10 ± 22% +0.0 0.13 ± 6% perf-profile.children.cycles-pp.irq_exit
0.08 ± 22% +0.0 0.12 ± 9% perf-profile.children.cycles-pp.stack_access_ok
0.02 ±173% +0.0 0.07 ± 28% perf-profile.children.cycles-pp.irq_work_interrupt
0.02 ±173% +0.0 0.07 ± 28% perf-profile.children.cycles-pp.smp_irq_work_interrupt
0.02 ±173% +0.0 0.07 ± 28% perf-profile.children.cycles-pp.printk
0.22 ± 18% +0.1 0.27 perf-profile.children.cycles-pp.wake_page_function
0.03 ±105% +0.1 0.09 ± 24% perf-profile.children.cycles-pp.irq_work_run_list
0.00 +0.1 0.05 ± 8% perf-profile.children.cycles-pp.__x2apic_send_IPI_dest
0.26 ± 15% +0.1 0.31 ± 4% perf-profile.children.cycles-pp.page_mapping
0.16 ± 25% +0.1 0.22 ± 8% perf-profile.children.cycles-pp.__pagevec_lru_add_fn
0.00 +0.1 0.06 ± 14% perf-profile.children.cycles-pp.irq_enter
0.19 ± 22% +0.1 0.25 ± 7% perf-profile.children.cycles-pp.__switch_to_asm
0.10 ± 24% +0.1 0.16 ± 9% perf-profile.children.cycles-pp.in_sched_functions
0.02 ±173% +0.1 0.08 ± 27% perf-profile.children.cycles-pp.irq_work_run
0.00 +0.1 0.06 ± 17% perf-profile.children.cycles-pp.in_lock_functions
0.18 ± 21% +0.1 0.25 ± 5% perf-profile.children.cycles-pp.orc_find
0.27 ± 23% +0.1 0.34 ± 3% perf-profile.children.cycles-pp.__switch_to
0.32 ± 20% +0.1 0.39 ± 3% perf-profile.children.cycles-pp.__alloc_pages_nodemask
0.35 ± 20% +0.1 0.43 ± 3% perf-profile.children.cycles-pp.alloc_pages_vma
0.37 ± 20% +0.1 0.45 ± 2% perf-profile.children.cycles-pp.swapgs_restore_regs_and_return_to_usermode
0.14 ± 20% +0.1 0.22 ± 5% perf-profile.children.cycles-pp.native_write_msr
0.41 ± 21% +0.1 0.49 ± 4% perf-profile.children.cycles-pp.shmem_alloc_page
0.00 +0.1 0.08 ± 10% perf-profile.children.cycles-pp.llist_add_batch
0.00 +0.1 0.09 ± 9% perf-profile.children.cycles-pp.native_apic_msr_eoi_write
0.12 ± 21% +0.1 0.22 ± 8% perf-profile.children.cycles-pp.kernel_text_address
0.00 +0.1 0.11 ± 12% perf-profile.children.cycles-pp.generic_exec_single
0.16 ± 21% +0.1 0.27 ± 6% perf-profile.children.cycles-pp.__kernel_text_address
0.00 +0.1 0.12 ± 11% perf-profile.children.cycles-pp.smp_call_function_single_async
0.62 ± 21% +0.1 0.75 ± 4% perf-profile.children.cycles-pp.___perf_sw_event
0.26 ± 24% +0.1 0.39 ± 4% perf-profile.children.cycles-pp.__orc_find
0.20 ± 22% +0.2 0.35 ± 7% perf-profile.children.cycles-pp.unwind_get_return_address
0.08 ± 10% +0.2 0.24 ± 4% perf-profile.children.cycles-pp.tick_nohz_idle_enter
0.77 ± 20% +0.2 0.95 ± 3% perf-profile.children.cycles-pp.up_read
1.03 ± 23% +0.2 1.21 ± 2% perf-profile.children.cycles-pp.finish_fault
0.98 ± 22% +0.2 1.17 perf-profile.children.cycles-pp.page_add_file_rmap
0.67 ± 17% +0.2 0.90 perf-profile.children.cycles-pp.intel_idle
1.26 ± 23% +0.2 1.51 ± 2% perf-profile.children.cycles-pp.find_get_entry
0.94 ± 22% +0.3 1.21 perf-profile.children.cycles-pp.xas_load
1.02 ± 22% +0.3 1.29 ± 2% perf-profile.children.cycles-pp.xas_find
0.00 +0.3 0.27 ± 7% perf-profile.children.cycles-pp.ttwu_queue_wakelist
0.99 ± 18% +0.3 1.29 ± 3% perf-profile.children.cycles-pp.PageHuge
1.44 ± 20% +0.4 1.81 perf-profile.children.cycles-pp.sync_regs
1.12 ± 23% +0.4 1.49 ± 5% perf-profile.children.cycles-pp.down_read_trylock
0.66 ± 44% +0.4 1.05 ± 6% perf-profile.children.cycles-pp.start_kernel
1.06 ± 22% +0.4 1.51 perf-profile.children.cycles-pp.unwind_next_frame
2.02 ± 21% +0.5 2.49 perf-profile.children.cycles-pp.native_irq_return_iret
2.51 ± 22% +0.5 3.03 ± 2% perf-profile.children.cycles-pp.alloc_set_pte
2.77 ± 20% +0.6 3.39 perf-profile.children.cycles-pp.unlock_page
1.65 ± 22% +0.7 2.37 perf-profile.children.cycles-pp.arch_stack_walk
1.80 ± 22% +0.8 2.55 perf-profile.children.cycles-pp.stack_trace_save_tsk
2.14 ± 22% +0.9 3.05 perf-profile.children.cycles-pp.__account_scheduler_latency
2.78 ± 22% +1.0 3.75 perf-profile.children.cycles-pp.enqueue_entity
2.93 ± 21% +1.0 3.91 perf-profile.children.cycles-pp.activate_task
2.93 ± 21% +1.0 3.92 perf-profile.children.cycles-pp.ttwu_do_activate
2.91 ± 21% +1.0 3.89 perf-profile.children.cycles-pp.enqueue_task_fair
1.22 ± 21% +1.3 2.53 ± 2% perf-profile.children.cycles-pp.schedule_idle
0.24 ± 25% +1.3 1.59 ± 2% perf-profile.children.cycles-pp.finish_task_switch
0.00 +1.4 1.43 perf-profile.children.cycles-pp.flush_smp_call_function_queue
0.00 +1.5 1.50 perf-profile.children.cycles-pp.sched_ttwu_pending
3.08 ± 22% +1.6 4.65 ± 2% perf-profile.children.cycles-pp.__sched_text_start
0.00 +1.6 1.58 perf-profile.children.cycles-pp.smp_call_function_single_interrupt
0.00 +1.7 1.74 perf-profile.children.cycles-pp.call_function_single_interrupt
11.59 ± 20% +2.1 13.68 perf-profile.children.cycles-pp.start_secondary
12.25 ± 21% +2.5 14.71 perf-profile.children.cycles-pp.do_idle
12.25 ± 21% +2.5 14.73 perf-profile.children.cycles-pp.secondary_startup_64
12.25 ± 21% +2.5 14.73 perf-profile.children.cycles-pp.cpu_startup_entry
0.60 ± 23% -0.2 0.35 ± 7% perf-profile.self.cycles-pp.try_to_wake_up
0.10 ± 28% +0.0 0.12 ± 4% perf-profile.self.cycles-pp.__pagevec_lru_add_fn
0.11 ± 22% +0.0 0.15 ± 5% perf-profile.self.cycles-pp.__do_fault
0.10 ± 19% +0.0 0.14 ± 11% perf-profile.self.cycles-pp.enqueue_entity
0.04 ± 58% +0.0 0.08 ± 17% perf-profile.self.cycles-pp.arch_stack_walk
0.22 ± 18% +0.0 0.27 perf-profile.self.cycles-pp.wake_page_function
0.23 ± 19% +0.0 0.27 ± 3% perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore
0.06 ± 58% +0.0 0.11 ± 10% perf-profile.self.cycles-pp.stack_access_ok
0.04 ± 58% +0.1 0.09 ± 4% perf-profile.self.cycles-pp.kernel_text_address
0.00 +0.1 0.05 ± 8% perf-profile.self.cycles-pp.__kernel_text_address
0.24 ± 15% +0.1 0.30 ± 4% perf-profile.self.cycles-pp.page_mapping
0.19 ± 22% +0.1 0.25 ± 7% perf-profile.self.cycles-pp.__switch_to_asm
0.18 ± 23% +0.1 0.24 ± 7% perf-profile.self.cycles-pp.orc_find
0.01 ±173% +0.1 0.08 ± 10% perf-profile.self.cycles-pp.unwind_get_return_address
0.26 ± 24% +0.1 0.33 ± 2% perf-profile.self.cycles-pp.__switch_to
0.00 +0.1 0.08 ± 11% perf-profile.self.cycles-pp.sched_ttwu_pending
0.14 ± 20% +0.1 0.22 ± 5% perf-profile.self.cycles-pp.native_write_msr
0.00 +0.1 0.08 ± 10% perf-profile.self.cycles-pp.llist_add_batch
0.00 +0.1 0.09 ± 9% perf-profile.self.cycles-pp.native_apic_msr_eoi_write
0.00 +0.1 0.09 ± 4% perf-profile.self.cycles-pp.ttwu_queue_wakelist
0.39 ± 22% +0.1 0.48 ± 3% perf-profile.self.cycles-pp.shmem_getpage_gfp
0.48 ± 21% +0.1 0.58 ± 4% perf-profile.self.cycles-pp.___perf_sw_event
0.34 ± 22% +0.1 0.45 ± 9% perf-profile.self.cycles-pp.do_user_addr_fault
0.53 ± 19% +0.1 0.65 ± 2% perf-profile.self.cycles-pp.find_lock_entry
0.26 ± 25% +0.1 0.37 ± 8% perf-profile.self.cycles-pp.__account_scheduler_latency
0.26 ± 24% +0.1 0.39 ± 4% perf-profile.self.cycles-pp.__orc_find
0.22 ± 18% +0.2 0.38 ± 4% perf-profile.self.cycles-pp.finish_task_switch
0.76 ± 22% +0.2 0.93 perf-profile.self.cycles-pp.page_add_file_rmap
0.77 ± 20% +0.2 0.95 ± 3% perf-profile.self.cycles-pp.up_read
0.51 ± 20% +0.2 0.72 ± 3% perf-profile.self.cycles-pp.unwind_next_frame
0.75 ± 22% +0.2 0.96 ± 2% perf-profile.self.cycles-pp.xas_load
0.67 ± 17% +0.2 0.90 perf-profile.self.cycles-pp.intel_idle
1.11 ± 22% +0.3 1.41 ± 4% perf-profile.self.cycles-pp.__handle_mm_fault
0.98 ± 18% +0.3 1.29 ± 3% perf-profile.self.cycles-pp.PageHuge
1.43 ± 20% +0.4 1.79 perf-profile.self.cycles-pp.sync_regs
1.11 ± 23% +0.4 1.48 ± 5% perf-profile.self.cycles-pp.down_read_trylock
2.02 ± 21% +0.5 2.49 perf-profile.self.cycles-pp.native_irq_return_iret
2.72 ± 20% +0.6 3.33 perf-profile.self.cycles-pp.unlock_page
18.15 ± 20% +4.4 22.52 perf-profile.self.cycles-pp.filemap_map_pages
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.
Thanks,
Rong Chen
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