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Message-ID: <20160308070358.GC10475@yexl-desktop>
Date: Tue, 8 Mar 2016 15:03:58 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...nel.org>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Arnaldo Carvalho de Melo <acme@...hat.com>,
Jiri Olsa <jolsa@...hat.com>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Thomas Gleixner <tglx@...utronix.de>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp] [perf] bd2afa49d1: -20.7% will-it-scale.per_thread_ops
FYI, we noticed the will-it-scale.per_thread_ops -20.7% regression on
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit bd2afa49d194c6412c333e9fdd48bc5d06bb465d ("perf: Fix scaling vs. perf_event_enable()")
=========================================================================================
compiler/kconfig/rootfs/tbox_group/test/testcase:
gcc-4.9/x86_64-rhel/debian-x86_64-2015-02-07.cgz/lkp-sb03/lseek1/will-it-scale
commit:
7fce250915efca0f8f51dddee3ae89bf30d86ca5
bd2afa49d194c6412c333e9fdd48bc5d06bb465d
7fce250915efca0f bd2afa49d194c6412c333e9fdd
---------------- --------------------------
%stddev %change %stddev
\ | \
7989217 ± 0% -20.7% 6333122 ± 0% will-it-scale.per_thread_ops
0.61 ± 0% -1.3% 0.60 ± 0% will-it-scale.scalability
1762 ± 0% -4.7% 1680 ± 0% will-it-scale.time.system_time
748.10 ± 0% +11.0% 830.15 ± 0% will-it-scale.time.user_time
748.10 ± 0% +11.0% 830.15 ± 0% time.user_time
0.03 ± 40% -66.7% 0.01 ±-10000% turbostat.Pkg%pc6
1.54 ± 1% -16.4% 1.28 ± 3% perf-profile.cycles.___might_sleep.__might_sleep.mutex_lock.__fdget_pos.sys_lseek
33.95 ± 0% -15.3% 28.77 ± 0% perf-profile.cycles.__fdget_pos.sys_lseek.entry_SYSCALL_64_fastpath
14.29 ± 2% -18.4% 11.67 ± 1% perf-profile.cycles.__fget.__fget_light.__fdget_pos.sys_lseek.entry_SYSCALL_64_fastpath
14.66 ± 2% -18.1% 12.02 ± 0% perf-profile.cycles.__fget_light.__fdget_pos.sys_lseek.entry_SYSCALL_64_fastpath
3.38 ± 1% -14.1% 2.90 ± 3% perf-profile.cycles.__might_sleep.mutex_lock.__fdget_pos.sys_lseek.entry_SYSCALL_64_fastpath
12.52 ± 1% -10.9% 11.16 ± 0% perf-profile.cycles.entry_SYSCALL_64
12.72 ± 1% -17.8% 10.45 ± 1% perf-profile.cycles.entry_SYSCALL_64_after_swapgs
10.29 ± 2% -17.7% 8.47 ± 1% perf-profile.cycles.fput.entry_SYSCALL_64_fastpath
1.94 ± 5% +152.2% 4.89 ± 2% perf-profile.cycles.generic_file_llseek_size.shmem_file_llseek.sys_lseek.entry_SYSCALL_64_fastpath
0.75 ± 5% +517.3% 4.65 ± 3% perf-profile.cycles.generic_file_llseek_size.sys_lseek.entry_SYSCALL_64_fastpath
11.77 ± 2% -13.5% 10.18 ± 1% perf-profile.cycles.mutex_lock.__fdget_pos.sys_lseek.entry_SYSCALL_64_fastpath
4.59 ± 3% +180.3% 12.87 ± 4% perf-profile.cycles.shmem_file_llseek.sys_lseek.entry_SYSCALL_64_fastpath
47.83 ± 1% +12.6% 53.87 ± 0% perf-profile.cycles.sys_lseek.entry_SYSCALL_64_fastpath
35661 ± 4% +26.3% 45032 ± 18% sched_debug.cfs_rq:/.exec_clock.24
34816 ± 0% +14.1% 39725 ± 14% sched_debug.cfs_rq:/.exec_clock.25
33735 ± 4% -31.2% 23222 ± 37% sched_debug.cfs_rq:/.exec_clock.8
804888 ± 3% +25.5% 1010094 ± 15% sched_debug.cfs_rq:/.min_vruntime.24
709991 ± 3% -30.1% 496149 ± 31% sched_debug.cfs_rq:/.min_vruntime.min
4.25 ± 13% -24.5% 3.21 ± 2% sched_debug.cfs_rq:/.nr_spread_over.max
1.17 ± 8% -19.6% 0.94 ± 5% sched_debug.cfs_rq:/.nr_spread_over.stddev
-585558 ± -4% +28.1% -750273 ±-13% sched_debug.cfs_rq:/.spread0.8
-595168 ± -3% +29.4% -770251 ±-14% sched_debug.cfs_rq:/.spread0.min
561.50 ± 4% -6.6% 524.25 ± 4% sched_debug.cfs_rq:/.util_avg.12
411.50 ± 14% -13.9% 354.50 ± 1% sched_debug.cfs_rq:/.util_avg.23
173.25 ± 1% +12.8% 195.50 ± 10% sched_debug.cfs_rq:/.util_avg.26
53711 ± 4% +16.0% 62301 ± 9% sched_debug.cpu.nr_load_updates.24
10450 ± 12% -22.0% 8153 ± 12% sched_debug.cpu.nr_switches.0
14829 ± 16% +32.3% 19618 ± 18% sched_debug.cpu.nr_switches.11
7613 ± 30% -59.2% 3109 ± 11% sched_debug.cpu.nr_switches.29
33333 ± 5% +47.8% 49256 ± 22% sched_debug.cpu.nr_switches.max
8197 ± 3% +32.3% 10843 ± 12% sched_debug.cpu.nr_switches.stddev
1.00 ±187% -600.0% -5.00 ±-54% sched_debug.cpu.nr_uninterruptible.11
16912 ± 19% +203.2% 51277 ± 64% sched_debug.cpu.sched_count.10
7914 ± 31% -60.3% 3144 ± 11% sched_debug.cpu.sched_count.29
3798 ± 39% +57.9% 5998 ± 30% sched_debug.cpu.sched_count.3
4658 ± 9% +90.7% 8886 ± 67% sched_debug.cpu.sched_goidle.14
3051 ± 2% +11.2% 3394 ± 4% sched_debug.cpu.sched_goidle.avg
13064 ± 9% +62.4% 21213 ± 29% sched_debug.cpu.sched_goidle.max
3266 ± 4% +41.9% 4634 ± 15% sched_debug.cpu.sched_goidle.stddev
6316 ± 13% -41.4% 3703 ± 7% sched_debug.cpu.ttwu_count.14
17502 ± 10% +82.7% 31976 ± 15% sched_debug.cpu.ttwu_count.max
4063 ± 5% +53.3% 6230 ± 11% sched_debug.cpu.ttwu_count.stddev
1733 ± 31% +49.4% 2591 ± 13% sched_debug.cpu.ttwu_local.11
899.00 ± 29% +76.7% 1588 ± 22% sched_debug.cpu.ttwu_local.27
=========================================================================================
compiler/cpufreq_governor/kconfig/rootfs/tbox_group/test/testcase:
gcc-4.9/performance/x86_64-rhel/debian-x86_64-2015-02-07.cgz/lkp-sbx04/lseek1/will-it-scale
commit:
7fce250915efca0f8f51dddee3ae89bf30d86ca5
bd2afa49d194c6412c333e9fdd48bc5d06bb465d
7fce250915efca0f bd2afa49d194c6412c333e9fdd
---------------- --------------------------
%stddev %change %stddev
\ | \
7619716 ± 0% -21.2% 6008133 ± 0% will-it-scale.per_thread_ops
0.60 ± 0% -2.6% 0.58 ± 0% will-it-scale.scalability
2982 ± 0% -4.8% 2838 ± 0% will-it-scale.time.system_time
1262 ± 0% +11.4% 1406 ± 0% will-it-scale.time.user_time
1262 ± 0% +11.4% 1406 ± 0% time.user_time
21294 ± 1% +9.4% 23298 ± 2% slabinfo.anon_vma_chain.active_objs
21294 ± 1% +9.4% 23298 ± 2% slabinfo.anon_vma_chain.num_objs
13408 ± 1% -14.4% 11482 ± 3% slabinfo.kmalloc-512.active_objs
13547 ± 1% -12.9% 11804 ± 3% slabinfo.kmalloc-512.num_objs
2.00 ± 0% +212.5% 6.25 ± 34% sched_debug.cfs_rq:/.load.27
2.50 ± 20% +1650.0% 43.75 ± 84% sched_debug.cfs_rq:/.load_avg.18
11.50 ± 4% -10.9% 10.25 ± 4% sched_debug.cfs_rq:/.load_avg.46
1133547 ± 15% -14.8% 965376 ± 0% sched_debug.cfs_rq:/.min_vruntime.57
2.00 ±-50% +12.5% 2.25 ± 57% sched_debug.cfs_rq:/.nr_spread_over.9
5.54 ± 29% -33.1% 3.71 ± 30% sched_debug.cfs_rq:/.nr_spread_over.max
0.98 ± 8% -14.8% 0.83 ± 7% sched_debug.cfs_rq:/.nr_spread_over.stddev
3.00 ± 0% -33.3% 2.00 ± 0% sched_debug.cfs_rq:/.runnable_load_avg.31
172.50 ± 1% +15.2% 198.75 ± 14% sched_debug.cfs_rq:/.util_avg.21
176.00 ± 0% +44.5% 254.25 ± 28% sched_debug.cfs_rq:/.util_avg.26
17.60 ± 5% -8.5% 16.11 ± 6% sched_debug.cpu.cpu_load[3].stddev
1792 ± 0% +27.7% 2289 ± 31% sched_debug.cpu.curr->pid.16
1793 ± 0% +25.4% 2248 ± 28% sched_debug.cpu.curr->pid.21
48688 ± 3% +6.1% 51640 ± 3% sched_debug.cpu.nr_load_updates.63
14390 ± 25% -70.2% 4282 ± 52% sched_debug.cpu.nr_switches.23
1180 ± 10% +19.8% 1414 ± 15% sched_debug.cpu.nr_switches.47
3051 ± 55% -57.1% 1309 ± 6% sched_debug.cpu.nr_switches.50
1604 ± 46% +111.0% 3385 ± 60% sched_debug.cpu.nr_switches.52
2296 ± 37% +103.1% 4664 ± 32% sched_debug.cpu.nr_switches.59
2199 ± 20% +95.1% 4292 ± 39% sched_debug.cpu.nr_switches.60
1960 ± 17% +49.9% 2939 ± 14% sched_debug.cpu.nr_switches.63
-18.75 ±-19% +62.7% -30.50 ±-21% sched_debug.cpu.nr_uninterruptible.0
-2.00 ±-86% -162.5% 1.25 ±103% sched_debug.cpu.nr_uninterruptible.19
-1.75 ±-123% -171.4% 1.25 ±103% sched_debug.cpu.nr_uninterruptible.27
1.25 ±153% +360.0% 5.75 ± 35% sched_debug.cpu.nr_uninterruptible.32
3.50 ± 84% -71.4% 1.00 ±254% sched_debug.cpu.nr_uninterruptible.46
-18.50 ±-18% +62.6% -30.08 ±-21% sched_debug.cpu.nr_uninterruptible.min
4732118 ± 0% +27.7% 6043638 ± 0% sched_debug.cpu.sched_count.0
16580 ±100% -73.9% 4329 ± 47% sched_debug.cpu.sched_count.1
14410 ± 24% -70.2% 4297 ± 52% sched_debug.cpu.sched_count.23
11351 ± 43% +159.5% 29460 ± 46% sched_debug.cpu.sched_count.27
5346 ± 55% -50.1% 2669 ± 35% sched_debug.cpu.sched_count.4
3061 ± 55% -56.9% 1320 ± 5% sched_debug.cpu.sched_count.50
1614 ± 46% +110.6% 3399 ± 60% sched_debug.cpu.sched_count.52
2035 ± 8% +59.1% 3238 ± 11% sched_debug.cpu.sched_count.57
2310 ± 37% +105.8% 4754 ± 33% sched_debug.cpu.sched_count.59
2218 ± 20% +122.3% 4931 ± 36% sched_debug.cpu.sched_count.60
1973 ± 17% +91.8% 3785 ± 37% sched_debug.cpu.sched_count.63
80242 ± 0% +26.0% 101102 ± 0% sched_debug.cpu.sched_count.avg
4732118 ± 0% +27.7% 6043638 ± 0% sched_debug.cpu.sched_count.max
586184 ± 0% +27.7% 748781 ± 0% sched_debug.cpu.sched_count.stddev
4320 ± 46% -64.8% 1520 ± 9% sched_debug.cpu.sched_goidle.20
2161 ± 73% -53.1% 1012 ± 22% sched_debug.cpu.sched_goidle.4
622.00 ± 25% -19.3% 502.25 ± 20% sched_debug.cpu.sched_goidle.44
1063 ± 38% -53.4% 496.00 ± 7% sched_debug.cpu.sched_goidle.50
480.50 ± 10% +39.0% 667.75 ± 33% sched_debug.cpu.sched_goidle.53
925.50 ± 43% +115.9% 1998 ± 39% sched_debug.cpu.sched_goidle.59
754.75 ± 6% +59.7% 1205 ± 14% sched_debug.cpu.sched_goidle.63
8103 ± 6% -11.0% 7214 ± 6% sched_debug.cpu.ttwu_count.0
1831 ± 23% +69.1% 3095 ± 10% sched_debug.cpu.ttwu_count.15
2932 ± 23% -47.1% 1550 ± 22% sched_debug.cpu.ttwu_count.18
4208 ± 27% -59.6% 1702 ± 20% sched_debug.cpu.ttwu_count.19
4212 ± 39% -69.9% 1268 ± 24% sched_debug.cpu.ttwu_count.23
5265 ± 45% -44.9% 2901 ± 16% sched_debug.cpu.ttwu_count.27
3700 ± 24% +71.1% 6331 ± 48% sched_debug.cpu.ttwu_count.28
2916 ± 90% -65.1% 1017 ± 14% sched_debug.cpu.ttwu_count.4
2347 ± 50% -62.8% 874.25 ± 77% sched_debug.cpu.ttwu_count.44
5181 ± 49% -78.6% 1107 ± 66% sched_debug.cpu.ttwu_count.46
1745 ± 28% +174.4% 4789 ± 27% sched_debug.cpu.ttwu_count.9
1182 ± 79% -63.6% 430.00 ± 13% sched_debug.cpu.ttwu_local.18
2470 ± 56% -78.6% 529.25 ± 30% sched_debug.cpu.ttwu_local.19
3327 ± 46% -86.4% 452.25 ± 33% sched_debug.cpu.ttwu_local.23
1156 ± 40% +66.5% 1925 ± 33% sched_debug.cpu.ttwu_local.24
1589 ± 9% -28.6% 1134 ± 10% sched_debug.cpu.ttwu_local.27
349.50 ± 27% -34.5% 229.00 ± 40% sched_debug.cpu.ttwu_local.33
126.50 ± 15% +43.1% 181.00 ± 18% sched_debug.cpu.ttwu_local.38
1126 ± 62% -62.2% 425.75 ± 34% sched_debug.cpu.ttwu_local.4
381.00 ± 21% +145.7% 936.00 ± 35% sched_debug.cpu.ttwu_local.59
lkp-sb03: Sandy Bridge-EP
Memory: 64G
lkp-sbx04: Sandy Bridge-EX
Memory: 64G
will-it-scale.per_thread_ops
9e+06 ++------------------------------------------------------------------+
*. .*.*.*. .*.* |
8e+06 ++*. *..*.*.*.*..*.*.*.*..*.*.*..*.*.*.*..*.* : *.*.*..*.*
7e+06 O+O O O O O O O O O O : : |
| O O O O : : |
6e+06 ++ : : |
5e+06 ++ : : |
| : : |
4e+06 ++ : : |
3e+06 ++ : : |
| : : |
2e+06 ++ : : |
1e+06 ++ : |
| : |
0 ++-------------------------------------------------------*----------+
will-it-scale.time.system_time
1800 *+*--*-*-*--*-*-*-*--*-*-*--*-*-*--*-*-*-*--*-*-*--*-*-*----*-*-*--*-*
O O O O O O O O O O O O O O O : : |
1600 ++ : : |
1400 ++ : : |
| : : |
1200 ++ : : |
1000 ++ : : |
| : : |
800 ++ : : |
600 ++ : : |
| : : |
400 ++ :: |
200 ++ : |
| : |
0 ++--------------------------------------------------------*----------+
[*] bisect-good sample
[O] bisect-bad sample
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,
Xiaolong.
View attachment "job.yaml" of type "text/plain" (3547 bytes)
View attachment "reproduce" of type "text/plain" (62 bytes)
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