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Message-ID: <87oab9mqe7.fsf@yhuang-dev.intel.com>
Date: Mon, 22 Feb 2016 10:26:40 +0800
From: kernel test robot <ying.huang@...ux.intel.com>
TO: Waiman Long <Waiman.Long@....com>
CC: 0day robot <fengguang.wu@...el.com>
Subject: [lkp] [locking/mutex] 5267438002: +38.9% fileio.time.involuntary_context_switches
FYI, we noticed the below changes on
https://github.com/0day-ci/linux Waiman-Long/locking-mutex-Enable-optimistic-spinning-of-lock-waiter/20160210-035352
commit 526743800284f9bf1c3487754abdd0a04689986a ("locking/mutex: Enable optimistic spinning of woken task in wait queue")
=========================================================================================
compiler/cpufreq_governor/disk/filenum/fs/iomode/kconfig/nr_threads/period/rootfs/rwmode/size/tbox_group/testcase:
gcc-4.9/performance/1HDD/1024f/xfs/sync/x86_64-rhel/100%/600s/debian-x86_64-2015-02-07.cgz/seqrewr/64G/lkp-sb02/fileio
commit:
a97b24f27907ff7078dde5d8b162890657e9cffa
526743800284f9bf1c3487754abdd0a04689986a
a97b24f27907ff70 526743800284f9bf1c3487754a
---------------- --------------------------
%stddev %change %stddev
\ | \
0.02 ± 0% +82950.0% 16.61 ± 0% fileio.request_latency_95%_ms
4409 ± 1% +38.9% 6126 ± 2% fileio.time.involuntary_context_switches
6.00 ± 0% +33.3% 8.00 ± 0% fileio.time.percent_of_cpu_this_job_got
36.06 ± 0% +43.0% 51.55 ± 0% fileio.time.system_time
1828660 ± 0% -92.5% 137258 ± 0% fileio.time.voluntary_context_switches
6776 ± 3% -83.3% 1134 ± 2% vmstat.system.cs
965.80 ± 3% +1699.5% 17379 ± 0% latency_stats.avg.xfs_file_buffered_aio_write.xfs_file_write_iter.__vfs_write.vfs_write.SyS_pwrite64.entry_SYSCALL_64_fastpath
1775334 ± 0% -94.4% 98980 ± 0% latency_stats.hits.xfs_file_buffered_aio_write.xfs_file_write_iter.__vfs_write.vfs_write.SyS_pwrite64.entry_SYSCALL_64_fastpath
2854 ± 1% +28.3% 3663 ± 4% proc-vmstat.kswapd_high_wmark_hit_quickly
2686 ± 5% -31.5% 1839 ± 8% proc-vmstat.kswapd_low_wmark_hit_quickly
4409 ± 1% +38.9% 6126 ± 2% time.involuntary_context_switches
6.00 ± 0% +33.3% 8.00 ± 0% time.percent_of_cpu_this_job_got
36.06 ± 0% +43.0% 51.55 ± 0% time.system_time
1.61 ± 8% +30.9% 2.11 ± 10% time.user_time
1828660 ± 0% -92.5% 137258 ± 0% time.voluntary_context_switches
8.132e+08 ± 2% -99.6% 2980944 ± 15% cpuidle.C1-SNB.time
1017420 ± 1% -99.4% 6236 ± 7% cpuidle.C1-SNB.usage
15400570 ± 5% -29.7% 10828903 ± 9% cpuidle.C1E-SNB.time
23282 ± 4% -25.5% 17339 ± 4% cpuidle.C1E-SNB.usage
10079742 ± 6% -34.3% 6626480 ± 5% cpuidle.C3-SNB.time
11636 ± 2% -25.9% 8620 ± 6% cpuidle.C3-SNB.usage
9.165e+08 ± 12% +158.8% 2.372e+09 ± 4% cpuidle.C6-SNB.time
215963 ± 3% +11.9% 241655 ± 1% cpuidle.C6-SNB.usage
6.391e+08 ± 3% -99.7% 1916334 ± 17% cpuidle.POLL.time
737818 ± 2% -92.0% 59379 ± 8% cpuidle.POLL.usage
28.32 ± 5% -89.4% 2.99 ± 3% turbostat.%Busy
846.40 ± 5% -89.9% 85.11 ± 3% turbostat.Avg_MHz
34.14 ± 4% -97.0% 1.02 ± 3% turbostat.CPU%c1
0.48 ± 7% -29.2% 0.34 ± 4% turbostat.CPU%c3
37.05 ± 7% +158.2% 95.65 ± 0% turbostat.CPU%c6
17.13 ± 4% -85.2% 2.53 ± 2% turbostat.CorWatt
0.83 ± 40% +4818.5% 40.92 ± 3% turbostat.Pkg%pc2
0.12 ± 11% +199.4% 0.36 ± 8% turbostat.Pkg%pc3
1.96 ±181% +2442.6% 49.76 ± 2% turbostat.Pkg%pc6
20.71 ± 3% -70.8% 6.04 ± 1% turbostat.PkgWatt
9162 ± 3% +23.4% 11309 ± 3% sched_debug.cfs_rq:/.exec_clock.0
6844 ± 3% +31.9% 9030 ± 2% sched_debug.cfs_rq:/.exec_clock.1
6768 ± 4% +31.1% 8870 ± 2% sched_debug.cfs_rq:/.exec_clock.2
6805 ± 4% +30.7% 8892 ± 3% sched_debug.cfs_rq:/.exec_clock.3
7395 ± 2% +28.8% 9525 ± 2% sched_debug.cfs_rq:/.exec_clock.avg
9163 ± 3% +23.4% 11309 ± 3% sched_debug.cfs_rq:/.exec_clock.max
6562 ± 2% +33.2% 8738 ± 2% sched_debug.cfs_rq:/.exec_clock.min
28.21 ± 9% +23.6% 34.85 ± 10% sched_debug.cfs_rq:/.load_avg.avg
15905 ± 6% +17.9% 18747 ± 3% sched_debug.cfs_rq:/.min_vruntime.0
14555 ± 6% +18.1% 17190 ± 2% sched_debug.cfs_rq:/.min_vruntime.2
14783 ± 10% +23.9% 18316 ± 7% sched_debug.cfs_rq:/.min_vruntime.3
15027 ± 2% +17.8% 17708 ± 2% sched_debug.cfs_rq:/.min_vruntime.avg
16764 ± 3% +15.1% 19297 ± 4% sched_debug.cfs_rq:/.min_vruntime.max
13379 ± 3% +22.5% 16396 ± 2% sched_debug.cfs_rq:/.min_vruntime.min
82.40 ± 13% +27.6% 105.11 ± 13% sched_debug.cfs_rq:/.util_avg.3
84.55 ± 4% +12.4% 95.06 ± 4% sched_debug.cfs_rq:/.util_avg.avg
691995 ± 5% +12.5% 778781 ± 1% sched_debug.cpu.avg_idle.avg
430798 ± 20% +45.9% 628519 ± 2% sched_debug.cpu.avg_idle.min
181201 ± 16% -37.0% 114212 ± 8% sched_debug.cpu.avg_idle.stddev
533948 ± 5% -80.7% 102858 ± 6% sched_debug.cpu.nr_switches.0
534186 ± 7% -81.0% 101537 ± 9% sched_debug.cpu.nr_switches.1
544165 ± 10% -82.8% 93401 ± 8% sched_debug.cpu.nr_switches.2
563662 ± 7% -83.6% 92575 ± 10% sched_debug.cpu.nr_switches.3
543991 ± 2% -82.1% 97593 ± 3% sched_debug.cpu.nr_switches.avg
602486 ± 4% -81.7% 110318 ± 5% sched_debug.cpu.nr_switches.max
494168 ± 6% -82.5% 86298 ± 6% sched_debug.cpu.nr_switches.min
40961 ± 45% -77.8% 9113 ± 35% sched_debug.cpu.nr_switches.stddev
525594 ± 5% -82.1% 94195 ± 7% sched_debug.cpu.sched_count.0
525022 ± 7% -82.6% 91341 ± 9% sched_debug.cpu.sched_count.1
535427 ± 10% -84.0% 85485 ± 9% sched_debug.cpu.sched_count.2
556754 ± 7% -84.4% 86819 ± 10% sched_debug.cpu.sched_count.3
535700 ± 2% -83.3% 89461 ± 3% sched_debug.cpu.sched_count.avg
594074 ± 4% -82.9% 101334 ± 5% sched_debug.cpu.sched_count.max
485951 ± 6% -83.7% 79152 ± 6% sched_debug.cpu.sched_count.min
40932 ± 44% -79.6% 8357 ± 33% sched_debug.cpu.sched_count.stddev
260676 ± 5% -82.9% 44493 ± 7% sched_debug.cpu.sched_goidle.0
260318 ± 7% -83.5% 43008 ± 9% sched_debug.cpu.sched_goidle.1
265623 ± 10% -84.8% 40286 ± 9% sched_debug.cpu.sched_goidle.2
276372 ± 7% -85.2% 41011 ± 11% sched_debug.cpu.sched_goidle.3
265748 ± 2% -84.1% 42200 ± 3% sched_debug.cpu.sched_goidle.avg
294884 ± 4% -83.7% 48058 ± 5% sched_debug.cpu.sched_goidle.max
240878 ± 6% -84.6% 37148 ± 6% sched_debug.cpu.sched_goidle.min
20456 ± 44% -79.9% 4114 ± 33% sched_debug.cpu.sched_goidle.stddev
266102 ± 5% -83.0% 45259 ± 13% sched_debug.cpu.ttwu_count.0
271621 ± 8% -84.2% 42969 ± 9% sched_debug.cpu.ttwu_count.1
268563 ± 11% -83.5% 44288 ± 16% sched_debug.cpu.ttwu_count.2
259619 ± 8% -84.0% 41599 ± 12% sched_debug.cpu.ttwu_count.3
266477 ± 2% -83.7% 43529 ± 3% sched_debug.cpu.ttwu_count.avg
292475 ± 6% -82.4% 51569 ± 9% sched_debug.cpu.ttwu_count.max
237977 ± 4% -84.6% 36626 ± 6% sched_debug.cpu.ttwu_count.min
20654 ± 49% -72.1% 5763 ± 34% sched_debug.cpu.ttwu_count.stddev
lkp-sb02: Sandy Bridge-EP
Memory: 4G
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
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,
Ying Huang
View attachment "job.yaml" of type "text/plain" (3719 bytes)
Download attachment "reproduce.sh" of type "application/x-sh" (57963 bytes)
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