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Message-ID: <20200714052624.GA3874@shao2-debian>
Date: Tue, 14 Jul 2020 13:26:24 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: John Ogness <john.ogness@...utronix.de>
Cc: Petr Mladek <pmladek@...e.com>,
Peter Zijlstra <peterz@...radead.org>,
Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
Steven Rostedt <rostedt@...dmis.org>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Andrea Parri <parri.andrea@...il.com>,
Thomas Gleixner <tglx@...utronix.de>,
Paul McKenney <paulmck@...nel.org>, kexec@...ts.infradead.org,
linux-kernel@...r.kernel.org, lkp@...ts.01.org
Subject: [printk] 96d5c61b1f: stress-ng.timerfd.ops_per_sec 8.3% improvement
Greeting,
FYI, we noticed a 8.3% improvement of stress-ng.timerfd.ops_per_sec due to commit:
commit: 96d5c61b1fff364edfae607e2bf2a66ee9616ff2 ("[PATCH v5 4/4] printk: use the lockless ringbuffer")
url: https://github.com/0day-ci/linux/commits/John-Ogness/printk-replace-ringbuffer/20200709-212623
base: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git 9ebcfadb0610322ac537dd7aa5d9cbc2b2894c68
in testcase: stress-ng
on test machine: 96 threads Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 256G memory
with following parameters:
nr_threads: 100%
disk: 1HDD
testtime: 30s
class: interrupt
cpufreq_governor: performance
ucode: 0x5002f01
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
=========================================================================================
class/compiler/cpufreq_governor/disk/kconfig/nr_threads/rootfs/tbox_group/testcase/testtime/ucode:
interrupt/gcc-9/performance/1HDD/x86_64-rhel-8.3/100%/debian-10.4-x86_64-20200603.cgz/lkp-csl-2sp6/stress-ng/30s/0x5002f01
commit:
72621a0b10 ("Revert "printk: lock/unlock console only for new logbuf entries"")
96d5c61b1f ("printk: use the lockless ringbuffer")
72621a0b1077a8ad 96d5c61b1fff364edfae607e2bf
---------------- ---------------------------
%stddev %change %stddev
\ | \
2.274e+08 +18.6% 2.697e+08 stress-ng.sigq.ops
7580582 +18.6% 8991276 stress-ng.sigq.ops_per_sec
1.513e+08 ± 5% -8.3% 1.387e+08 ± 2% stress-ng.time.involuntary_context_switches
3.768e+08 ± 3% -5.9% 3.544e+08 ± 2% stress-ng.time.voluntary_context_switches
1.598e+09 ± 2% +8.3% 1.73e+09 stress-ng.timerfd.ops
53265971 ± 2% +8.3% 57674750 stress-ng.timerfd.ops_per_sec
3.716e+08 ± 2% +10.7% 4.115e+08 ± 3% cpuidle.C1.time
174505 ± 10% -14.5% 149157 ± 13% numa-meminfo.node0.AnonHugePages
32959 +2.1% 33668 proc-vmstat.nr_slab_reclaimable
90647 ± 43% -60.2% 36039 ±124% numa-vmstat.node0.numa_other
71315 ± 55% +76.4% 125804 ± 35% numa-vmstat.node1.numa_other
1075081 ± 3% -5.6% 1014755 vmstat.system.cs
3762322 +4.7% 3940838 vmstat.system.in
61530 ± 3% -12.1% 54104 ± 4% slabinfo.Acpi-State.active_objs
1209 ± 3% -11.9% 1065 ± 4% slabinfo.Acpi-State.active_slabs
61710 ± 3% -11.9% 54359 ± 4% slabinfo.Acpi-State.num_objs
1209 ± 3% -11.9% 1065 ± 4% slabinfo.Acpi-State.num_slabs
47136 ± 5% +6.0% 49962 ± 6% softirqs.CPU11.SCHED
45028 ± 2% +22.3% 55067 ± 10% softirqs.CPU16.SCHED
44744 ± 2% +22.1% 54634 ± 5% softirqs.CPU19.SCHED
45345 ± 2% +20.7% 54736 ± 8% softirqs.CPU23.SCHED
51163 ± 8% -10.2% 45932 softirqs.CPU30.SCHED
50701 ± 9% -10.2% 45552 softirqs.CPU36.SCHED
50848 ± 3% -11.0% 45253 softirqs.CPU41.SCHED
46949 ± 6% +17.2% 55030 ± 4% softirqs.CPU51.SCHED
45567 ± 2% +15.4% 52589 ± 11% softirqs.CPU55.SCHED
45734 +13.5% 51922 ± 9% softirqs.CPU64.SCHED
45342 +15.4% 52344 ± 5% softirqs.CPU67.SCHED
45901 +13.4% 52030 ± 9% softirqs.CPU68.SCHED
45578 +16.8% 53235 ± 7% softirqs.CPU69.SCHED
50784 ± 8% -9.3% 46080 softirqs.CPU77.SCHED
1187223 ± 26% -47.3% 626108 ± 43% sched_debug.cfs_rq:/.MIN_vruntime.avg
44095 ± 13% -37.3% 27628 ± 16% sched_debug.cfs_rq:/.load.avg
87004 ± 2% -24.3% 65828 ± 13% sched_debug.cfs_rq:/.load.stddev
1187223 ± 26% -47.3% 626108 ± 43% sched_debug.cfs_rq:/.max_vruntime.avg
87.24 ± 10% -17.7% 71.80 ± 7% sched_debug.cfs_rq:/.nr_spread_over.avg
10.92 ± 8% -25.6% 8.12 ± 10% sched_debug.cfs_rq:/.nr_spread_over.min
95.86 ± 12% -15.1% 81.42 ± 9% sched_debug.cfs_rq:/.nr_spread_over.stddev
133.70 ± 30% -81.5% 24.68 ±173% sched_debug.cfs_rq:/.removed.load_avg.max
58.28 ± 25% -80.1% 11.62 ±173% sched_debug.cfs_rq:/.removed.runnable_avg.max
6.81 ± 25% -77.8% 1.51 ±173% sched_debug.cfs_rq:/.removed.runnable_avg.stddev
744305 ± 35% -57.0% 319901 ± 93% sched_debug.cfs_rq:/.spread0.avg
27562 ± 8% -48.5% 14191 ± 13% sched_debug.cpu.curr->pid.avg
35526 ± 5% -42.5% 20423 ± 11% sched_debug.cpu.curr->pid.max
14383 ± 47% -55.9% 6346 ± 36% sched_debug.cpu.curr->pid.min
39.65 ± 4% +16.5% 46.19 ± 7% sched_debug.cpu.nr_running.avg
1.17 ± 25% -76.2% 0.28 ±163% sched_debug.cpu.nr_uninterruptible.avg
3769782 ± 4% -8.4% 3451639 ± 3% sched_debug.cpu.sched_count.max
0.00 +2.2e+104% 216.75 ±138% interrupts.102:PCI-MSI.31981635-edge.i40e-eth0-TxRx-66
8246728 ± 4% +7.0% 8826785 interrupts.CAL:Function_call_interrupts
65853 ± 7% +35.4% 89155 ± 18% interrupts.CPU19.CAL:Function_call_interrupts
133669 ± 7% +79.6% 240043 ± 33% interrupts.CPU19.RES:Rescheduling_interrupts
85710 ± 6% +13.6% 97401 interrupts.CPU32.CAL:Function_call_interrupts
201257 ± 3% -12.8% 175586 ± 4% interrupts.CPU42.RES:Rescheduling_interrupts
7732 -38.0% 4798 ± 34% interrupts.CPU45.NMI:Non-maskable_interrupts
7732 -38.0% 4798 ± 34% interrupts.CPU45.PMI:Performance_monitoring_interrupts
197808 ± 4% -7.1% 183824 ± 6% interrupts.CPU46.RES:Rescheduling_interrupts
149600 ± 16% +70.4% 254923 ± 25% interrupts.CPU54.RES:Rescheduling_interrupts
150479 ± 16% +64.7% 247795 ± 37% interrupts.CPU57.RES:Rescheduling_interrupts
150695 ± 16% +48.9% 224356 ± 22% interrupts.CPU60.RES:Rescheduling_interrupts
60718 ± 6% +18.7% 72058 ± 3% interrupts.CPU62.CAL:Function_call_interrupts
68390 ± 4% +20.6% 82506 ± 10% interrupts.CPU63.CAL:Function_call_interrupts
0.00 +2.2e+104% 216.25 ±138% interrupts.CPU66.102:PCI-MSI.31981635-edge.i40e-eth0-TxRx-66
62888 ± 4% +22.3% 76902 ± 8% interrupts.CPU7.CAL:Function_call_interrupts
62071 ± 10% +29.5% 80355 ± 10% interrupts.CPU71.CAL:Function_call_interrupts
231484 ± 21% -25.0% 173696 ± 3% interrupts.CPU75.RES:Rescheduling_interrupts
234587 ± 12% -17.0% 194613 ± 13% interrupts.CPU77.RES:Rescheduling_interrupts
209574 ± 3% -15.0% 178038 ± 4% interrupts.CPU83.RES:Rescheduling_interrupts
87531 ± 4% +31.1% 114721 ± 7% interrupts.CPU88.CAL:Function_call_interrupts
7732 -37.8% 4806 ± 34% interrupts.CPU89.NMI:Non-maskable_interrupts
7732 -37.8% 4806 ± 34% interrupts.CPU89.PMI:Performance_monitoring_interrupts
94766 ± 7% +19.1% 112844 ± 10% interrupts.CPU91.CAL:Function_call_interrupts
91308 ± 6% +22.9% 112175 ± 8% interrupts.CPU92.CAL:Function_call_interrupts
87571 ± 11% +31.6% 115238 ± 14% interrupts.CPU94.CAL:Function_call_interrupts
7.54 +13.5% 8.56 ± 19% perf-stat.i.MPKI
1.312e+10 -2.8% 1.276e+10 perf-stat.i.branch-instructions
1.246e+08 -1.4% 1.228e+08 perf-stat.i.branch-misses
71092689 ± 3% -19.7% 57085156 ± 2% perf-stat.i.cache-misses
2.672e+08 -10.2% 2.4e+08 perf-stat.i.cache-references
100471 -4.4% 96054 perf-stat.i.cpu-clock
2.436e+11 -5.8% 2.295e+11 perf-stat.i.cpu-cycles
28918 ± 2% +8.8% 31448 ± 2% perf-stat.i.cycles-between-cache-misses
0.03 ± 5% +0.0 0.05 ± 68% perf-stat.i.dTLB-load-miss-rate%
3585193 ± 5% -17.4% 2960337 ± 3% perf-stat.i.dTLB-load-misses
0.06 +0.0 0.06 ± 11% perf-stat.i.dTLB-store-miss-rate%
6767973 -6.1% 6356168 ± 2% perf-stat.i.dTLB-store-misses
1.05e+10 -1.4% 1.036e+10 perf-stat.i.dTLB-stores
7143251 ± 4% -7.7% 6593711 ± 2% perf-stat.i.iTLB-loads
6.422e+10 -2.4% 6.265e+10 perf-stat.i.instructions
2.55 -2.7% 2.48 perf-stat.i.metric.GHz
0.63 ± 3% +10.7% 0.70 ± 5% perf-stat.i.metric.K/sec
92744 -3.1% 89912 perf-stat.i.minor-faults
87.88 -1.4 86.43 perf-stat.i.node-load-miss-rate%
8868728 ± 13% -46.6% 4739379 ± 3% perf-stat.i.node-loads
94.74 -3.0 91.76 ± 2% perf-stat.i.node-store-miss-rate%
2508354 ± 11% -33.3% 1673742 perf-stat.i.node-stores
691526 -1.6% 680596 perf-stat.i.page-faults
99599 -3.6% 96043 perf-stat.i.task-clock
4.23 -4.5% 4.04 perf-stat.overall.MPKI
0.95 +0.0 0.96 perf-stat.overall.branch-miss-rate%
3.84 -2.4% 3.74 perf-stat.overall.cpi
0.02 ± 3% -0.0 0.02 ± 2% perf-stat.overall.dTLB-load-miss-rate%
0.06 -0.0 0.06 ± 2% perf-stat.overall.dTLB-store-miss-rate%
0.26 +2.5% 0.27 perf-stat.overall.ipc
47.96 +4.3 52.28 ± 3% perf-stat.overall.node-load-miss-rate%
70.13 +2.3 72.43 ± 2% perf-stat.overall.node-store-miss-rate%
1.232e+10 +2.0% 1.257e+10 perf-stat.ps.branch-instructions
1.166e+08 +3.3% 1.205e+08 perf-stat.ps.branch-misses
67786783 -5.2% 64234227 ± 4% perf-stat.ps.cache-misses
1078561 ± 3% -5.5% 1019000 perf-stat.ps.context-switches
1.714e+10 +2.3% 1.753e+10 perf-stat.ps.dTLB-loads
9.794e+09 +2.6% 1.005e+10 perf-stat.ps.dTLB-stores
87676758 +4.4% 91553262 perf-stat.ps.iTLB-load-misses
6.02e+10 +2.2% 6.15e+10 perf-stat.ps.instructions
9026151 -12.8% 7873090 ± 10% perf-stat.ps.node-loads
2511686 -9.8% 2265767 ± 6% perf-stat.ps.node-stores
642630 +1.6% 652856 perf-stat.ps.page-faults
3.27e+13 +2.2% 3.341e+13 perf-stat.total.instructions
26.27 ± 2% -2.7 23.56 ± 2% perf-profile.calltrace.cycles-pp.security_task_kill.group_send_sig_info.kill_pid_info.do_rt_sigqueueinfo.__x64_sys_rt_sigqueueinfo
26.23 ± 2% -2.7 23.52 ± 2% perf-profile.calltrace.cycles-pp.apparmor_task_kill.security_task_kill.group_send_sig_info.kill_pid_info.do_rt_sigqueueinfo
26.45 ± 2% -2.7 23.74 ± 2% perf-profile.calltrace.cycles-pp.group_send_sig_info.kill_pid_info.do_rt_sigqueueinfo.__x64_sys_rt_sigqueueinfo.do_syscall_64
13.52 ± 2% -2.4 11.11 ± 2% perf-profile.calltrace.cycles-pp.aa_get_task_label.apparmor_task_kill.security_task_kill.group_send_sig_info.kill_pid_info
47.08 -2.4 44.67 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe
47.16 -2.4 44.76 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe
46.12 -2.3 43.82 perf-profile.calltrace.cycles-pp.kill_pid_info.do_rt_sigqueueinfo.__x64_sys_rt_sigqueueinfo.do_syscall_64.entry_SYSCALL_64_after_hwframe
46.36 -2.3 44.07 perf-profile.calltrace.cycles-pp.do_rt_sigqueueinfo.__x64_sys_rt_sigqueueinfo.do_syscall_64.entry_SYSCALL_64_after_hwframe
46.71 -2.3 44.43 perf-profile.calltrace.cycles-pp.__x64_sys_rt_sigqueueinfo.do_syscall_64.entry_SYSCALL_64_after_hwframe
2.99 ± 14% -1.0 1.98 ± 14% perf-profile.calltrace.cycles-pp.__lll_unlock_wake
2.83 ± 14% -1.0 1.83 ± 15% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__lll_unlock_wake
2.80 ± 14% -1.0 1.81 ± 15% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__lll_unlock_wake
2.67 ± 14% -0.9 1.73 ± 15% perf-profile.calltrace.cycles-pp.__x64_sys_futex.do_syscall_64.entry_SYSCALL_64_after_hwframe.__lll_unlock_wake
2.63 ± 14% -0.9 1.70 ± 15% perf-profile.calltrace.cycles-pp.do_futex.__x64_sys_futex.do_syscall_64.entry_SYSCALL_64_after_hwframe.__lll_unlock_wake
7.36 ± 3% -0.7 6.70 ± 2% perf-profile.calltrace.cycles-pp.__lll_lock_wait
6.73 ± 3% -0.6 6.14 ± 2% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__lll_lock_wait
6.71 ± 3% -0.6 6.13 ± 2% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__lll_lock_wait
4.23 ± 4% -0.5 3.77 ± 3% perf-profile.calltrace.cycles-pp.__x64_sys_futex.do_syscall_64.entry_SYSCALL_64_after_hwframe.__lll_lock_wait
4.19 ± 4% -0.5 3.74 ± 3% perf-profile.calltrace.cycles-pp.do_futex.__x64_sys_futex.do_syscall_64.entry_SYSCALL_64_after_hwframe.__lll_lock_wait
5.59 ± 2% -0.4 5.22 ± 2% perf-profile.calltrace.cycles-pp.futex_wait.do_futex.__x64_sys_futex.do_syscall_64.entry_SYSCALL_64_after_hwframe
4.78 ± 2% -0.3 4.47 ± 2% perf-profile.calltrace.cycles-pp.futex_wait_queue_me.futex_wait.do_futex.__x64_sys_futex.do_syscall_64
0.52 ± 2% -0.3 0.25 ±100% perf-profile.calltrace.cycles-pp.__lock_task_sighand.do_send_sig_info.kill_pid_info.do_rt_sigqueueinfo.__x64_sys_rt_sigqueueinfo
4.12 ± 2% -0.2 3.88 ± 2% perf-profile.calltrace.cycles-pp.schedule.futex_wait_queue_me.futex_wait.do_futex.__x64_sys_futex
4.06 ± 2% -0.2 3.81 ± 2% perf-profile.calltrace.cycles-pp.__sched_text_start.schedule.futex_wait_queue_me.futex_wait.do_futex
0.76 ± 4% -0.1 0.62 ± 6% perf-profile.calltrace.cycles-pp._raw_spin_lock.__sched_text_start.schedule.futex_wait_queue_me.futex_wait
0.69 ± 4% -0.1 0.56 ± 6% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.__sched_text_start.schedule.futex_wait_queue_me
1.08 ± 3% -0.1 0.99 perf-profile.calltrace.cycles-pp.get_signal.do_signal.__prepare_exit_to_usermode.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.32 ± 2% -0.1 1.24 perf-profile.calltrace.cycles-pp.stack_trace_save_tsk.__account_scheduler_latency.update_stats_enqueue_sleeper.enqueue_entity.enqueue_task_fair
0.75 ± 4% -0.1 0.68 ± 3% perf-profile.calltrace.cycles-pp.dequeue_signal.get_signal.do_signal.__prepare_exit_to_usermode.do_syscall_64
0.96 ± 3% -0.1 0.90 perf-profile.calltrace.cycles-pp.generic_file_buffered_read.new_sync_read.vfs_read.ksys_pread64.do_syscall_64
1.08 ± 3% -0.1 1.02 perf-profile.calltrace.cycles-pp.new_sync_read.vfs_read.ksys_pread64.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.77 -0.1 0.71 perf-profile.calltrace.cycles-pp.__pthread_mutex_lock
0.73 ± 2% -0.0 0.68 ± 3% perf-profile.calltrace.cycles-pp.dequeue_task_fair.__sched_text_start.schedule.futex_wait_queue_me.futex_wait
0.55 +0.0 0.56 perf-profile.calltrace.cycles-pp.select_idle_sibling.select_task_rq_fair.try_to_wake_up.signal_wake_up_state.__send_signal
0.64 ± 2% +0.1 0.70 ± 2% perf-profile.calltrace.cycles-pp.aa_may_signal.apparmor_task_kill.security_task_kill.group_send_sig_info.kill_pid_info
1.47 +0.1 1.55 perf-profile.calltrace.cycles-pp.__x64_sys_futex.do_syscall_64.entry_SYSCALL_64_after_hwframe.pthread_cond_timedwait@@GLIBC_2.3.2
1.43 +0.1 1.51 perf-profile.calltrace.cycles-pp.do_futex.__x64_sys_futex.do_syscall_64.entry_SYSCALL_64_after_hwframe.pthread_cond_timedwait@@GLIBC_2.3.2
1.56 +0.1 1.65 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.pthread_cond_timedwait@@GLIBC_2.3.2
1.58 +0.1 1.67 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.pthread_cond_timedwait@@GLIBC_2.3.2
1.79 +0.1 1.88 perf-profile.calltrace.cycles-pp.pthread_cond_timedwait@@GLIBC_2.3.2
0.74 ± 9% +0.2 0.98 ± 4% perf-profile.calltrace.cycles-pp.enqueue_entity.enqueue_task_fair.activate_task.ttwu_do_activate.sched_ttwu_pending
0.76 ± 8% +0.2 1.00 ± 4% perf-profile.calltrace.cycles-pp.ttwu_do_activate.sched_ttwu_pending.__sysvec_call_function_single.asm_call_on_stack.sysvec_call_function_single
0.76 ± 8% +0.2 1.00 ± 4% perf-profile.calltrace.cycles-pp.activate_task.ttwu_do_activate.sched_ttwu_pending.__sysvec_call_function_single.asm_call_on_stack
0.76 ± 8% +0.2 1.00 ± 4% perf-profile.calltrace.cycles-pp.enqueue_task_fair.activate_task.ttwu_do_activate.sched_ttwu_pending.__sysvec_call_function_single
0.81 ± 8% +0.3 1.07 ± 4% perf-profile.calltrace.cycles-pp.sched_ttwu_pending.__sysvec_call_function_single.asm_call_on_stack.sysvec_call_function_single.asm_sysvec_call_function_single
0.84 ± 8% +0.3 1.09 ± 4% perf-profile.calltrace.cycles-pp.asm_call_on_stack.sysvec_call_function_single.asm_sysvec_call_function_single.finish_task_switch.__sched_text_start
0.85 ± 7% +0.3 1.11 ± 4% perf-profile.calltrace.cycles-pp.sysvec_call_function_single.asm_sysvec_call_function_single.finish_task_switch.__sched_text_start.schedule_idle
0.83 ± 8% +0.3 1.09 ± 4% perf-profile.calltrace.cycles-pp.__sysvec_call_function_single.asm_call_on_stack.sysvec_call_function_single.asm_sysvec_call_function_single.finish_task_switch
0.91 ± 7% +0.3 1.18 ± 4% perf-profile.calltrace.cycles-pp.finish_task_switch.__sched_text_start.schedule_idle.do_idle.cpu_startup_entry
0.88 ± 7% +0.3 1.15 ± 4% perf-profile.calltrace.cycles-pp.asm_sysvec_call_function_single.finish_task_switch.__sched_text_start.schedule_idle.do_idle
1.57 ± 10% +0.4 1.95 ± 5% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.try_to_wake_up.wake_up_q.futex_wake
1.60 ± 10% +0.4 1.98 ± 5% perf-profile.calltrace.cycles-pp._raw_spin_lock.try_to_wake_up.wake_up_q.futex_wake.do_futex
4.32 ± 7% +0.7 5.00 ± 3% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.__sched_text_start.schedule_idle.do_idle
4.38 ± 6% +0.7 5.06 ± 3% perf-profile.calltrace.cycles-pp._raw_spin_lock.__sched_text_start.schedule_idle.do_idle.cpu_startup_entry
6.08 ± 6% +1.0 7.08 ± 3% perf-profile.calltrace.cycles-pp.__sched_text_start.schedule_idle.do_idle.cpu_startup_entry.start_secondary
6.10 ± 6% +1.0 7.10 ± 3% perf-profile.calltrace.cycles-pp.schedule_idle.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
5.92 ± 6% +1.1 7.03 ± 3% perf-profile.calltrace.cycles-pp.do_futex.__x64_sys_futex.do_syscall_64.entry_SYSCALL_64_after_hwframe.pthread_cond_signal@@GLIBC_2.3.2
5.94 ± 6% +1.1 7.05 ± 3% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.pthread_cond_signal@@GLIBC_2.3.2
5.95 ± 6% +1.1 7.07 ± 3% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.pthread_cond_signal@@GLIBC_2.3.2
5.93 ± 6% +1.1 7.04 ± 3% perf-profile.calltrace.cycles-pp.__x64_sys_futex.do_syscall_64.entry_SYSCALL_64_after_hwframe.pthread_cond_signal@@GLIBC_2.3.2
6.08 ± 6% +1.1 7.20 ± 3% perf-profile.calltrace.cycles-pp.pthread_cond_signal@@GLIBC_2.3.2
9.26 ± 7% +1.8 11.02 ± 3% perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry
9.55 ± 7% +1.8 11.38 ± 3% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry.start_secondary
9.56 ± 7% +1.8 11.40 ± 3% perf-profile.calltrace.cycles-pp.cpuidle_enter.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
16.74 ± 6% +3.0 19.71 ± 3% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
16.75 ± 6% +3.0 19.73 ± 3% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64
16.75 ± 6% +3.0 19.73 ± 3% perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64
16.90 ± 6% +3.0 19.93 ± 3% perf-profile.calltrace.cycles-pp.secondary_startup_64
76.06 -2.9 73.12 perf-profile.children.cycles-pp.do_syscall_64
76.41 -2.9 73.48 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
26.27 ± 2% -2.7 23.56 ± 2% perf-profile.children.cycles-pp.security_task_kill
26.25 ± 2% -2.7 23.54 ± 2% perf-profile.children.cycles-pp.apparmor_task_kill
26.45 ± 2% -2.7 23.75 ± 2% perf-profile.children.cycles-pp.group_send_sig_info
13.53 ± 2% -2.4 11.12 ± 2% perf-profile.children.cycles-pp.aa_get_task_label
46.12 -2.3 43.83 perf-profile.children.cycles-pp.kill_pid_info
46.36 -2.3 44.07 perf-profile.children.cycles-pp.do_rt_sigqueueinfo
46.72 -2.3 44.44 perf-profile.children.cycles-pp.__x64_sys_rt_sigqueueinfo
3.02 ± 14% -1.0 2.01 ± 14% perf-profile.children.cycles-pp.__lll_unlock_wake
7.39 ± 3% -0.7 6.73 ± 2% perf-profile.children.cycles-pp.__lll_lock_wait
5.47 ± 3% -0.4 5.04 ± 3% perf-profile.children.cycles-pp.schedule
5.59 ± 2% -0.4 5.22 ± 2% perf-profile.children.cycles-pp.futex_wait
4.30 ± 5% -0.4 3.94 ± 2% perf-profile.children.cycles-pp.__prepare_exit_to_usermode
4.79 ± 2% -0.3 4.48 ± 2% perf-profile.children.cycles-pp.futex_wait_queue_me
1.53 ± 3% -0.1 1.41 perf-profile.children.cycles-pp.get_signal
0.66 ± 5% -0.1 0.56 ± 3% perf-profile.children.cycles-pp.switch_mm_irqs_off
1.09 ± 3% -0.1 0.99 ± 2% perf-profile.children.cycles-pp.dequeue_signal
0.62 ± 4% -0.1 0.54 ± 4% perf-profile.children.cycles-pp.__task_rq_lock
0.89 ± 4% -0.1 0.80 ± 2% perf-profile.children.cycles-pp.__set_current_blocked
0.53 ± 5% -0.1 0.45 ± 3% perf-profile.children.cycles-pp.recalc_sigpending
0.67 ± 5% -0.1 0.60 ± 3% perf-profile.children.cycles-pp.__switch_to
0.52 ± 4% -0.1 0.45 ± 5% perf-profile.children.cycles-pp.futex_wait_setup
1.09 ± 2% -0.1 1.03 perf-profile.children.cycles-pp.new_sync_read
0.97 ± 3% -0.1 0.91 perf-profile.children.cycles-pp.generic_file_buffered_read
0.65 ± 4% -0.1 0.59 ± 2% perf-profile.children.cycles-pp._raw_spin_lock_irq
0.20 ± 5% -0.0 0.15 ± 3% perf-profile.children.cycles-pp.put_task_stack
0.51 ± 3% -0.0 0.46 ± 2% perf-profile.children.cycles-pp.__sigqueue_free
0.77 -0.0 0.72 perf-profile.children.cycles-pp.__pthread_mutex_lock
0.41 ± 4% -0.0 0.36 ± 2% perf-profile.children.cycles-pp.__set_task_blocked
0.64 ± 2% -0.0 0.60 perf-profile.children.cycles-pp.pagecache_get_page
0.30 ± 5% -0.0 0.26 ± 4% perf-profile.children.cycles-pp.fpregs_mark_activate
0.13 ± 9% -0.0 0.10 ± 7% perf-profile.children.cycles-pp.switch_fpu_return
0.24 ± 4% -0.0 0.21 ± 3% perf-profile.children.cycles-pp.kmem_cache_free
0.52 ± 2% -0.0 0.49 ± 2% perf-profile.children.cycles-pp.__lock_task_sighand
0.46 ± 2% -0.0 0.44 ± 2% perf-profile.children.cycles-pp.signal_setup_done
0.26 -0.0 0.23 ± 2% perf-profile.children.cycles-pp.mark_wake_futex
0.20 ± 2% -0.0 0.18 ± 2% perf-profile.children.cycles-pp.file_remove_privs
0.15 -0.0 0.13 ± 3% perf-profile.children.cycles-pp.dentry_needs_remove_privs
0.14 ± 3% -0.0 0.12 perf-profile.children.cycles-pp.__unwind_start
0.07 ± 5% -0.0 0.06 ± 7% perf-profile.children.cycles-pp.clockevents_program_event
0.12 ± 4% -0.0 0.11 perf-profile.children.cycles-pp.security_inode_need_killpriv
0.07 ± 7% -0.0 0.05 perf-profile.children.cycles-pp.__vfs_getxattr
0.18 ± 2% -0.0 0.17 ± 4% perf-profile.children.cycles-pp.__orc_find
0.08 +0.0 0.09 perf-profile.children.cycles-pp.task_curr
0.10 ± 4% +0.0 0.11 perf-profile.children.cycles-pp.hrtimer_cancel
0.15 +0.0 0.16 ± 2% perf-profile.children.cycles-pp.check_kill_permission
0.06 ± 7% +0.0 0.07 perf-profile.children.cycles-pp.set_next_task_idle
0.15 ± 4% +0.0 0.17 ± 3% perf-profile.children.cycles-pp.__might_sleep
0.08 ± 5% +0.0 0.10 ± 4% perf-profile.children.cycles-pp.__next_timer_interrupt
0.13 ± 3% +0.0 0.15 ± 2% perf-profile.children.cycles-pp._find_next_bit
0.81 +0.0 0.82 perf-profile.children.cycles-pp.select_idle_sibling
0.28 +0.0 0.30 perf-profile.children.cycles-pp.__copy_siginfo_from_user
0.73 +0.0 0.75 perf-profile.children.cycles-pp.getuid
0.41 +0.0 0.43 perf-profile.children.cycles-pp.available_idle_cpu
0.43 ± 2% +0.0 0.46 perf-profile.children.cycles-pp._copy_from_user
0.93 +0.0 0.97 perf-profile.children.cycles-pp.dequeue_entity
0.42 +0.0 0.46 perf-profile.children.cycles-pp.menu_select
0.11 ± 6% +0.0 0.16 ± 5% perf-profile.children.cycles-pp.flush_smp_call_function_from_idle
0.64 ± 2% +0.1 0.70 ± 2% perf-profile.children.cycles-pp.aa_may_signal
1.79 +0.1 1.89 perf-profile.children.cycles-pp.pthread_cond_timedwait@@GLIBC_2.3.2
1.83 ± 3% +0.3 2.11 perf-profile.children.cycles-pp.finish_task_switch
2.64 ± 3% +0.3 2.98 ± 2% perf-profile.children.cycles-pp.asm_call_on_stack
2.03 ± 4% +0.4 2.39 ± 2% perf-profile.children.cycles-pp.sysvec_call_function_single
1.99 ± 4% +0.4 2.35 ± 2% perf-profile.children.cycles-pp.__sysvec_call_function_single
2.09 ± 4% +0.4 2.46 ± 2% perf-profile.children.cycles-pp.asm_sysvec_call_function_single
2.04 ± 4% +0.4 2.45 ± 2% perf-profile.children.cycles-pp.sched_ttwu_pending
11.57 +0.6 12.15 perf-profile.children.cycles-pp.__sched_text_start
17.81 +0.6 18.45 perf-profile.children.cycles-pp.enqueue_task_fair
17.83 +0.6 18.47 perf-profile.children.cycles-pp.activate_task
17.83 +0.6 18.48 perf-profile.children.cycles-pp.ttwu_do_activate
16.12 +0.6 16.77 perf-profile.children.cycles-pp.update_stats_enqueue_sleeper
16.08 +0.6 16.72 perf-profile.children.cycles-pp.__account_scheduler_latency
17.16 +0.7 17.84 perf-profile.children.cycles-pp.enqueue_entity
25.29 +0.7 26.00 perf-profile.children.cycles-pp.try_to_wake_up
14.49 +0.7 15.20 perf-profile.children.cycles-pp._raw_spin_lock_irqsave
13.01 ± 4% +0.9 13.90 perf-profile.children.cycles-pp._raw_spin_lock
6.16 ± 6% +1.0 7.18 ± 3% perf-profile.children.cycles-pp.schedule_idle
6.09 ± 6% +1.1 7.20 ± 3% perf-profile.children.cycles-pp.pthread_cond_signal@@GLIBC_2.3.2
25.45 ± 3% +1.7 27.18 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
9.33 ± 7% +1.8 11.12 ± 3% perf-profile.children.cycles-pp.intel_idle
9.64 ± 7% +1.9 11.50 ± 3% perf-profile.children.cycles-pp.cpuidle_enter_state
9.64 ± 7% +1.9 11.50 ± 3% perf-profile.children.cycles-pp.cpuidle_enter
16.75 ± 6% +3.0 19.73 ± 3% perf-profile.children.cycles-pp.start_secondary
16.90 ± 6% +3.0 19.93 ± 3% perf-profile.children.cycles-pp.secondary_startup_64
16.90 ± 6% +3.0 19.93 ± 3% perf-profile.children.cycles-pp.cpu_startup_entry
16.89 ± 6% +3.0 19.91 ± 3% perf-profile.children.cycles-pp.do_idle
13.42 ± 2% -2.4 11.04 ± 2% perf-profile.self.cycles-pp.aa_get_task_label
0.88 ± 4% -0.1 0.77 perf-profile.self.cycles-pp._raw_spin_lock
0.51 ± 5% -0.1 0.41 ± 3% perf-profile.self.cycles-pp.switch_mm_irqs_off
0.43 ± 5% -0.1 0.35 ± 4% perf-profile.self.cycles-pp.futex_wait_queue_me
0.44 ± 6% -0.1 0.37 ± 3% perf-profile.self.cycles-pp.recalc_sigpending
0.63 ± 5% -0.1 0.56 ± 3% perf-profile.self.cycles-pp.__switch_to
0.52 ± 4% -0.1 0.45 ± 2% perf-profile.self.cycles-pp._raw_spin_lock_irq
0.73 -0.1 0.67 perf-profile.self.cycles-pp.__pthread_mutex_lock
0.20 ± 5% -0.0 0.15 ± 3% perf-profile.self.cycles-pp.put_task_stack
0.51 ± 3% -0.0 0.46 ± 2% perf-profile.self.cycles-pp.__sigqueue_free
0.30 ± 3% -0.0 0.26 ± 9% perf-profile.self.cycles-pp.futex_wait_setup
0.21 ± 3% -0.0 0.17 ± 4% perf-profile.self.cycles-pp.pagecache_get_page
0.29 ± 4% -0.0 0.25 ± 4% perf-profile.self.cycles-pp.__lll_lock_wait
0.29 ± 5% -0.0 0.25 ± 4% perf-profile.self.cycles-pp.fpregs_mark_activate
0.35 ± 3% -0.0 0.32 perf-profile.self.cycles-pp.generic_file_buffered_read
0.13 ± 8% -0.0 0.10 ± 8% perf-profile.self.cycles-pp.switch_fpu_return
0.18 -0.0 0.16 ± 4% perf-profile.self.cycles-pp.simple_write_end
0.12 ± 3% -0.0 0.10 ± 8% perf-profile.self.cycles-pp.ktime_get
0.10 ± 10% -0.0 0.08 ± 5% perf-profile.self.cycles-pp.wake_up_q
0.15 ± 3% -0.0 0.13 perf-profile.self.cycles-pp.select_task_rq_fair
0.08 -0.0 0.07 ± 7% perf-profile.self.cycles-pp.generic_file_write_iter
0.18 ± 2% -0.0 0.17 ± 4% perf-profile.self.cycles-pp.__orc_find
0.11 ± 3% -0.0 0.10 perf-profile.self.cycles-pp.__unqueue_futex
0.08 -0.0 0.07 perf-profile.self.cycles-pp.arch_stack_walk
0.08 +0.0 0.09 perf-profile.self.cycles-pp.task_curr
0.19 ± 2% +0.0 0.21 ± 2% perf-profile.self.cycles-pp.prepare_signal
0.13 ± 3% +0.0 0.15 ± 3% perf-profile.self.cycles-pp.__dequeue_signal
0.13 ± 3% +0.0 0.14 ± 3% perf-profile.self.cycles-pp._find_next_bit
0.09 ± 4% +0.0 0.11 perf-profile.self.cycles-pp.menu_select
0.41 +0.0 0.42 ± 2% perf-profile.self.cycles-pp.available_idle_cpu
0.63 ± 3% +0.1 0.70 ± 2% perf-profile.self.cycles-pp.aa_may_signal
25.44 ± 3% +1.7 27.17 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
9.33 ± 7% +1.8 11.12 ± 3% perf-profile.self.cycles-pp.intel_idle
stress-ng.sigq.ops
3e+08 +-----------------------------------------------------------------+
| O O O O O O O O O O O O O O O O O O O O O O O |
2.5e+08 |-+ O |
|..+.+..+.+..+.+.. .+.. .+..+.+..+.+..+ |
| + +.+..+.+. |
2e+08 |-+ |
| |
1.5e+08 |-+ |
| |
1e+08 |-+ |
| |
| |
5e+07 |-+ |
| |
0 +-----------------------------------------------------------------+
stress-ng.sigq.ops_per_sec
1e+07 +-------------------------------------------------------------------+
9e+06 |-+O O O O O O O O O O O O O O O O O O O O O O O |
| O |
8e+06 |..+.+..+.+..+..+. .+.. .+..+.+..+.+..+ |
7e+06 |-+ +. +.+..+.+. |
| |
6e+06 |-+ |
5e+06 |-+ |
4e+06 |-+ |
| |
3e+06 |-+ |
2e+06 |-+ |
| |
1e+06 |-+ |
0 +-------------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Rong Chen
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