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Message-ID: <20171225060709.GF31543@yexl-desktop>
Date: Mon, 25 Dec 2017 14:07:09 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Vincent Guittot <vincent.guittot@...aro.org>
Cc: Ingo Molnar <mingo@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Ben Segall <bsegall@...gle.com>, Chris Mason <clm@...com>,
Dietmar Eggemann <dietmar.eggemann@....com>,
Josef Bacik <josef@...icpanda.com>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Mike Galbraith <efault@....de>,
Morten Rasmussen <morten.rasmussen@....com>,
Paul Turner <pjt@...gle.com>, Tejun Heo <tj@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Yuyang Du <yuyang.du@...el.com>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp-robot] [sched/fair] a4c3c04974: unixbench.score -4.3%
regression
Greeting,
FYI, we noticed a -4.3% regression of unixbench.score due to commit:
commit: a4c3c04974d648ee6e1a09ef4131eb32a02ab494 ("sched/fair: Update and fix the runnable propagation rule")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
in testcase: unixbench
on test machine: 8 threads Ivy Bridge with 16G memory
with following parameters:
runtime: 300s
nr_task: 100%
test: shell1
cpufreq_governor: performance
test-description: UnixBench is the original BYTE UNIX benchmark suite aims to test performance of Unix-like system.
test-url: https://github.com/kdlucas/byte-unixbench
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/nr_task/rootfs/runtime/tbox_group/test/testcase:
gcc-7/performance/x86_64-rhel-7.2/100%/debian-x86_64-2016-08-31.cgz/300s/lkp-ivb-d01/shell1/unixbench
commit:
c6b9d9a330 ("sched/wait: Fix add_wait_queue() behavioral change")
a4c3c04974 ("sched/fair: Update and fix the runnable propagation rule")
c6b9d9a330290144 a4c3c04974d648ee6e1a09ef41
---------------- --------------------------
%stddev %change %stddev
\ | \
13264 -4.3% 12694 unixbench.score
10619292 -11.7% 9374917 unixbench.time.involuntary_context_switches
4.829e+08 -4.3% 4.62e+08 unixbench.time.minor_page_faults
1126 -3.6% 1086 unixbench.time.system_time
2645 -3.0% 2566 unixbench.time.user_time
15855720 -6.2% 14878247 unixbench.time.voluntary_context_switches
0.00 ± 56% -0.0 0.00 ± 57% mpstat.cpu.iowait%
79517 -5.7% 74990 vmstat.system.cs
16361 -3.3% 15822 vmstat.system.in
1.814e+08 -24.0% 1.379e+08 cpuidle.C1.time
3436399 -20.6% 2728227 cpuidle.C1.usage
7772815 -9.9% 7001076 cpuidle.C1E.usage
1.479e+08 +66.1% 2.456e+08 cpuidle.C3.time
1437889 +38.7% 1994073 cpuidle.C3.usage
18147 +13.9% 20676 cpuidle.POLL.usage
3436173 -20.6% 2727580 turbostat.C1
3.54 -0.8 2.73 turbostat.C1%
7772758 -9.9% 7001012 turbostat.C1E
1437858 +38.7% 1994034 turbostat.C3
2.88 +2.0 4.86 turbostat.C3%
18.50 +10.8% 20.50 turbostat.CPU%c1
0.54 ± 2% +179.6% 1.51 turbostat.CPU%c3
2.32e+12 -4.3% 2.22e+12 perf-stat.branch-instructions
6.126e+10 -4.9% 5.823e+10 perf-stat.branch-misses
8.64 ± 4% +0.6 9.25 perf-stat.cache-miss-rate%
1.662e+11 -4.3% 1.59e+11 perf-stat.cache-references
51040611 -7.0% 47473754 perf-stat.context-switches
1.416e+13 -3.6% 1.365e+13 perf-stat.cpu-cycles
8396968 -3.9% 8065835 perf-stat.cpu-migrations
2.919e+12 -4.3% 2.793e+12 perf-stat.dTLB-loads
1.89e+12 -4.3% 1.809e+12 perf-stat.dTLB-stores
67.97 +1.1 69.03 perf-stat.iTLB-load-miss-rate%
4.767e+09 -1.3% 4.704e+09 perf-stat.iTLB-load-misses
2.247e+09 -6.0% 2.111e+09 perf-stat.iTLB-loads
1.14e+13 -4.3% 1.091e+13 perf-stat.instructions
2391 -3.0% 2319 perf-stat.instructions-per-iTLB-miss
4.726e+08 -4.3% 4.523e+08 perf-stat.minor-faults
4.726e+08 -4.3% 4.523e+08 perf-stat.page-faults
585.14 ± 4% -55.0% 263.59 ± 12% sched_debug.cfs_rq:/.load_avg.avg
1470 ± 4% -42.2% 850.09 ± 24% sched_debug.cfs_rq:/.load_avg.max
154.17 ± 22% -49.2% 78.39 ± 7% sched_debug.cfs_rq:/.load_avg.min
438.33 ± 6% -41.9% 254.49 ± 27% sched_debug.cfs_rq:/.load_avg.stddev
2540 ± 15% +23.5% 3137 ± 11% sched_debug.cfs_rq:/.removed.runnable_sum.avg
181.83 ± 11% -56.3% 79.50 ± 34% sched_debug.cfs_rq:/.runnable_load_avg.avg
16.46 ± 37% -72.9% 4.45 ±110% sched_debug.cfs_rq:/.runnable_load_avg.min
294.77 ± 5% +11.2% 327.87 ± 6% sched_debug.cfs_rq:/.util_avg.stddev
220260 ± 8% +20.3% 264870 ± 4% sched_debug.cpu.avg_idle.avg
502903 ± 4% +21.0% 608663 sched_debug.cpu.avg_idle.max
148667 ± 6% +29.5% 192468 ± 2% sched_debug.cpu.avg_idle.stddev
180.64 ± 10% -53.4% 84.23 ± 34% sched_debug.cpu.cpu_load[0].avg
25.73 ± 15% -85.6% 3.70 ±113% sched_debug.cpu.cpu_load[0].min
176.98 ± 6% -52.5% 84.06 ± 35% sched_debug.cpu.cpu_load[1].avg
53.93 ± 13% -72.6% 14.75 ± 15% sched_debug.cpu.cpu_load[1].min
176.61 ± 4% -55.3% 78.92 ± 31% sched_debug.cpu.cpu_load[2].avg
73.78 ± 11% -73.4% 19.61 ± 7% sched_debug.cpu.cpu_load[2].min
177.42 ± 3% -58.8% 73.09 ± 21% sched_debug.cpu.cpu_load[3].avg
93.01 ± 8% -73.9% 24.25 ± 6% sched_debug.cpu.cpu_load[3].min
173.36 ± 3% -60.6% 68.26 ± 13% sched_debug.cpu.cpu_load[4].avg
274.36 ± 5% -48.6% 141.16 ± 44% sched_debug.cpu.cpu_load[4].max
107.87 ± 6% -73.0% 29.11 ± 9% sched_debug.cpu.cpu_load[4].min
11203 ± 9% +9.9% 12314 ± 6% sched_debug.cpu.curr->pid.avg
1042556 ± 3% -6.9% 970165 ± 2% sched_debug.cpu.sched_goidle.max
748905 ± 5% -13.4% 648459 sched_debug.cpu.sched_goidle.min
90872 ± 11% +17.4% 106717 ± 5% sched_debug.cpu.sched_goidle.stddev
457847 ± 4% -15.0% 389113 sched_debug.cpu.ttwu_local.min
18.60 -1.1 17.45 perf-profile.calltrace.cycles-pp.secondary_startup_64
16.33 ± 2% -1.0 15.29 perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64
16.33 ± 2% -1.0 15.29 perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64
16.32 ± 2% -1.0 15.29 perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
15.44 ± 2% -1.0 14.43 perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary
15.69 ± 2% -1.0 14.71 perf-profile.calltrace.cycles-pp.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64
5.54 -0.1 5.45 perf-profile.calltrace.cycles-pp.__libc_fork
10.28 +0.0 10.32 perf-profile.calltrace.cycles-pp.page_fault
10.16 +0.0 10.21 perf-profile.calltrace.cycles-pp.do_page_fault.page_fault
10.15 +0.1 10.20 perf-profile.calltrace.cycles-pp.__do_page_fault.do_page_fault.page_fault
9.47 +0.1 9.56 perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault
11.49 +0.1 11.59 perf-profile.calltrace.cycles-pp.sys_execve.do_syscall_64.return_from_SYSCALL_64.execve
8.28 +0.1 8.38 perf-profile.calltrace.cycles-pp.load_elf_binary.search_binary_handler.do_execveat_common.sys_execve.do_syscall_64
11.49 +0.1 11.59 perf-profile.calltrace.cycles-pp.return_from_SYSCALL_64.execve
11.49 +0.1 11.59 perf-profile.calltrace.cycles-pp.do_syscall_64.return_from_SYSCALL_64.execve
8.30 +0.1 8.41 perf-profile.calltrace.cycles-pp.search_binary_handler.do_execveat_common.sys_execve.do_syscall_64.return_from_SYSCALL_64
11.46 +0.1 11.58 perf-profile.calltrace.cycles-pp.do_execveat_common.sys_execve.do_syscall_64.return_from_SYSCALL_64.execve
8.46 +0.1 8.57 perf-profile.calltrace.cycles-pp.handle_mm_fault.__do_page_fault.do_page_fault.page_fault
5.21 +0.1 5.34 ± 2% perf-profile.calltrace.cycles-pp.exit_mmap.mmput.do_exit.do_group_exit.__wake_up_parent
5.24 +0.1 5.38 ± 2% perf-profile.calltrace.cycles-pp.mmput.do_exit.do_group_exit.__wake_up_parent.entry_SYSCALL_64_fastpath
13.20 +0.1 13.34 perf-profile.calltrace.cycles-pp.execve
6.79 +0.2 6.94 ± 2% perf-profile.calltrace.cycles-pp.__wake_up_parent.entry_SYSCALL_64_fastpath
6.79 +0.2 6.95 ± 2% perf-profile.calltrace.cycles-pp.do_group_exit.__wake_up_parent.entry_SYSCALL_64_fastpath
6.78 +0.2 6.94 perf-profile.calltrace.cycles-pp.do_exit.do_group_exit.__wake_up_parent.entry_SYSCALL_64_fastpath
5.98 +0.2 6.18 perf-profile.calltrace.cycles-pp.vfprintf.__vsnprintf_chk
8.38 +0.2 8.61 perf-profile.calltrace.cycles-pp.__vsnprintf_chk
14.17 +0.3 14.49 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_fastpath
18.60 -1.1 17.45 perf-profile.children.cycles-pp.do_idle
18.60 -1.1 17.45 perf-profile.children.cycles-pp.cpu_startup_entry
18.60 -1.1 17.45 perf-profile.children.cycles-pp.secondary_startup_64
17.60 -1.1 16.46 perf-profile.children.cycles-pp.intel_idle
17.89 -1.1 16.80 perf-profile.children.cycles-pp.cpuidle_enter_state
16.33 ± 2% -1.0 15.29 perf-profile.children.cycles-pp.start_secondary
5.54 -0.1 5.45 perf-profile.children.cycles-pp.__libc_fork
16.15 +0.0 16.18 perf-profile.children.cycles-pp.do_page_fault
16.19 +0.0 16.22 perf-profile.children.cycles-pp.page_fault
6.24 +0.1 6.29 ± 2% perf-profile.children.cycles-pp.filemap_map_pages
16.07 +0.1 16.13 perf-profile.children.cycles-pp.__do_page_fault
16.85 +0.1 16.92 perf-profile.children.cycles-pp.do_syscall_64
16.85 +0.1 16.92 perf-profile.children.cycles-pp.return_from_SYSCALL_64
9.22 +0.1 9.33 perf-profile.children.cycles-pp.search_binary_handler
13.49 +0.1 13.61 perf-profile.children.cycles-pp.__handle_mm_fault
4.89 +0.1 5.02 ± 2% perf-profile.children.cycles-pp.unmap_page_range
9.11 +0.1 9.24 perf-profile.children.cycles-pp.load_elf_binary
13.20 +0.1 13.34 perf-profile.children.cycles-pp.execve
12.82 +0.1 12.96 perf-profile.children.cycles-pp.sys_execve
4.95 +0.2 5.10 ± 2% perf-profile.children.cycles-pp.unmap_vmas
12.79 +0.2 12.95 perf-profile.children.cycles-pp.do_execveat_common
13.90 +0.2 14.07 perf-profile.children.cycles-pp.handle_mm_fault
6.95 +0.2 7.13 ± 2% perf-profile.children.cycles-pp.do_exit
6.95 +0.2 7.13 ± 2% perf-profile.children.cycles-pp.do_group_exit
6.95 +0.2 7.13 ± 2% perf-profile.children.cycles-pp.__wake_up_parent
6.40 ± 2% +0.2 6.62 perf-profile.children.cycles-pp.vfprintf
8.38 +0.2 8.61 perf-profile.children.cycles-pp.__vsnprintf_chk
9.21 +0.2 9.46 perf-profile.children.cycles-pp.mmput
9.16 +0.2 9.41 perf-profile.children.cycles-pp.exit_mmap
19.85 +0.3 20.13 perf-profile.children.cycles-pp.entry_SYSCALL_64_fastpath
17.60 -1.1 16.46 perf-profile.self.cycles-pp.intel_idle
6.03 ± 2% +0.2 6.26 perf-profile.self.cycles-pp.vfprintf
unixbench.score
14000 +-+-----------------------------------------------------------------+
O.O..O.O.O.O..O.O.O.O..O.O.O.O..O.O.O..O.O.O.+ +.+.+..+.+.+.+..+.|
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10000 +-+ : : |
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8000 +-+ : : |
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6000 +-+ : : |
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4000 +-+ : : |
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0 +-+-----------------------------------------------------------------+
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 "config-4.15.0-rc2-00176-ga4c3c04" of type "text/plain" (163807 bytes)
View attachment "job-script" of type "text/plain" (6791 bytes)
View attachment "job.yaml" of type "text/plain" (4444 bytes)
View attachment "reproduce" of type "text/plain" (291 bytes)
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