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Date: Sun, 9 Oct 2016 13:59:32 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Dietmar Eggemann <dietmar.eggemann@....com>
Cc: Ingo Molnar <mingo@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Mike Galbraith <efault@....de>,
Thomas Gleixner <tglx@...utronix.de>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp] [sched/fair] ab522e33f9: [No primary changes]
reaim.child_utime -32.9% improvement
FYI, we noticed a -32.9% improvement of reaim.child_utime due to commit:
commit ab522e33f91799661aad47bebb691f241a9f6bb8 ("sched/fair: Fix fixed point arithmetic width for shares and effective load")
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
in testcase: reaim
on test machine: 28 threads Intel(R) Xeon(R) CPU E5-2695 v3 @ 2.30GHz with 256G memory
with following parameters:
runtime: 300s
nr_task: 600
test: creat_clo
cpufreq_governor: performance
REAIM is an updated and improved version of AIM 7 benchmark.
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.
Details are as below:
-------------------------------------------------------------------------------------------------->
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
=========================================================================================
compiler/cpufreq_governor/kconfig/nr_task/rootfs/runtime/tbox_group/test/testcase:
gcc-6/performance/x86_64-rhel-7.2/600/debian-x86_64-2016-08-31.cgz/300s/lkp-hsw-ep5/creat_clo/reaim
commit:
8f37961cf2 ("sched/core, x86/topology: Fix NUMA in package topology bug")
ab522e33f9 ("sched/fair: Fix fixed point arithmetic width for shares and effective load")
8f37961cf22304fb ab522e33f91799661aad47bebb
---------------- --------------------------
fail:runs %reproduction fail:runs
| | |
%stddev %change %stddev
\ | \
7.16 ± 3% -32.9% 4.80 ± 0% reaim.child_utime
61691 ± 2% +20.8% 74498 ± 8% reaim.jobs_per_min
102.82 ± 2% +20.8% 124.16 ± 8% reaim.jobs_per_min_child
63961 ± 3% +17.9% 75402 ± 8% reaim.max_jobs_per_min
58.44 ± 2% -16.7% 48.65 ± 8% reaim.parent_time
1.11 ± 1% -14.3% 0.95 ± 10% reaim.std_dev_time
56976 ± 9% -27.7% 41216 ± 11% reaim.time.involuntary_context_switches
2231 ± 0% +24.8% 2784 ± 1% reaim.time.percent_of_cpu_this_job_got
7371 ± 5% +23.6% 9108 ± 4% reaim.time.system_time
39.58 ± 12% -20.9% 31.30 ± 7% reaim.time.user_time
2574189 ± 1% +90.4% 4900794 ± 18% reaim.time.voluntary_context_switches
20246 ± 1% +24.4% 25194 ± 11% meminfo.Shmem
1651242 ± 9% +16.3% 1920509 ± 8% numa-numastat.node0.local_node
1651257 ± 9% +16.3% 1920520 ± 8% numa-numastat.node0.numa_hit
973623 ± 7% +15.2% 1121509 ± 7% numa-vmstat.node0.numa_hit
973612 ± 7% +15.2% 1121498 ± 7% numa-vmstat.node0.numa_local
669559 ± 9% +42.5% 953890 ± 4% softirqs.RCU
3989816 ± 6% +21.2% 4835284 ± 4% softirqs.TIMER
5060 ± 1% +24.5% 6298 ± 11% proc-vmstat.nr_shmem
235142 ± 8% +18.4% 278460 ± 7% proc-vmstat.numa_pte_updates
6554 ± 3% +28.5% 8419 ± 11% proc-vmstat.pgactivate
22.75 ± 1% +23.1% 28.00 ± 0% vmstat.procs.r
18537 ± 4% +76.1% 32653 ± 13% vmstat.system.cs
59046 ± 0% +1.6% 60013 ± 0% vmstat.system.in
76839 ± 1% +21.4% 93317 ± 2% slabinfo.kmalloc-256.active_objs
1235 ± 1% +22.3% 1511 ± 2% slabinfo.kmalloc-256.active_slabs
79114 ± 1% +22.3% 96764 ± 2% slabinfo.kmalloc-256.num_objs
1235 ± 1% +22.3% 1511 ± 2% slabinfo.kmalloc-256.num_slabs
1.486e+08 ± 8% +170.2% 4.015e+08 ± 21% cpuidle.C1-HSW.time
732700 ± 9% +228.1% 2404155 ± 30% cpuidle.C1-HSW.usage
293274 ± 5% +23.8% 363153 ± 6% cpuidle.C1E-HSW.usage
2.803e+08 ± 6% +27.3% 3.567e+08 ± 6% cpuidle.C3-HSW.time
1177259 ± 4% +37.6% 1620250 ± 7% cpuidle.C3-HSW.usage
1.04e+10 ± 6% -20.8% 8.238e+09 ± 6% cpuidle.C6-HSW.time
11658113 ± 7% -19.9% 9342841 ± 6% cpuidle.C6-HSW.usage
24794280 ± 7% +96.2% 48658115 ± 20% cpuidle.POLL.time
7138 ± 5% +390.7% 35025 ± 32% cpuidle.POLL.usage
42.14 ± 0% +21.8% 51.31 ± 1% turbostat.%Busy
600.50 ± 4% +89.9% 1140 ± 1% turbostat.Avg_MHz
1424 ± 4% +56.0% 2222 ± 0% turbostat.Bzy_MHz
0.91 ± 3% +30.1% 1.19 ± 6% turbostat.CPU%c3
22.96 ± 2% -42.6% 13.18 ± 1% turbostat.CPU%c6
54.50 ± 0% +19.7% 65.25 ± 1% turbostat.CoreTmp
5.81 ± 6% -58.8% 2.40 ± 12% turbostat.Pkg%pc2
60.00 ± 2% +17.1% 70.25 ± 0% turbostat.PkgTmp
88.35 ± 4% +47.2% 130.02 ± 0% turbostat.PkgWatt
77.97 ± 0% +2.7% 80.03 ± 0% turbostat.RAMWatt
1.432e+12 ± 3% +76.7% 2.531e+12 ± 3% perf-stat.branch-instructions
0.23 ± 5% -38.4% 0.14 ± 2% perf-stat.branch-miss-rate%
17.47 ± 3% +51.4% 26.45 ± 3% perf-stat.cache-miss-rate%
3.028e+09 ± 3% +66.8% 5.051e+09 ± 13% perf-stat.cache-misses
6164715 ± 2% +75.4% 10813552 ± 16% perf-stat.context-switches
1.15e+13 ± 2% +87.1% 2.151e+13 ± 4% perf-stat.cpu-cycles
799519 ± 4% -38.3% 493538 ± 5% perf-stat.cpu-migrations
0.05 ± 3% -46.5% 0.02 ± 5% perf-stat.dTLB-load-miss-rate%
1.527e+12 ± 3% +71.2% 2.614e+12 ± 3% perf-stat.dTLB-loads
0.02 ± 3% -30.6% 0.01 ± 8% perf-stat.dTLB-store-miss-rate%
73733750 ± 8% -21.1% 58179599 ± 7% perf-stat.dTLB-store-misses
33.64 ± 3% -22.1% 26.20 ± 5% perf-stat.iTLB-load-miss-rate%
93248101 ± 10% -21.1% 73553819 ± 5% perf-stat.iTLB-load-misses
1.833e+08 ± 5% +13.3% 2.076e+08 ± 7% perf-stat.iTLB-loads
5.949e+12 ± 4% +67.3% 9.954e+12 ± 4% perf-stat.instructions
64245 ± 7% +110.9% 135465 ± 2% perf-stat.instructions-per-iTLB-miss
0.52 ± 1% -10.5% 0.46 ± 1% perf-stat.ipc
1.311e+09 ± 6% +66.6% 2.183e+09 ± 17% perf-stat.node-load-misses
59529399 ± 13% +63.8% 97490648 ± 23% perf-stat.node-loads
1.115e+09 ± 4% +70.9% 1.906e+09 ± 10% perf-stat.node-store-misses
3.569e+08 ± 3% +75.8% 6.274e+08 ± 13% perf-stat.node-stores
60166 ± 0% +23.7% 74404 ± 2% sched_debug.cfs_rq:/.exec_clock.avg
82931 ± 1% +19.6% 99175 ± 1% sched_debug.cfs_rq:/.exec_clock.max
36938 ± 0% +29.5% 47845 ± 3% sched_debug.cfs_rq:/.exec_clock.min
1528331 ± 1% +50.2% 2295237 ± 4% sched_debug.cfs_rq:/.min_vruntime.avg
2131382 ± 2% +43.9% 3067242 ± 3% sched_debug.cfs_rq:/.min_vruntime.max
921219 ± 1% +59.1% 1465415 ± 5% sched_debug.cfs_rq:/.min_vruntime.min
561511 ± 3% +26.6% 710779 ± 1% sched_debug.cfs_rq:/.min_vruntime.stddev
0.37 ± 17% +31.3% 0.49 ± 9% sched_debug.cfs_rq:/.nr_running.avg
7.19 ± 15% +29.4% 9.30 ± 9% sched_debug.cfs_rq:/.runnable_load_avg.avg
-551097 ± -3% +19.9% -660673 ± -8% sched_debug.cfs_rq:/.spread0.avg
-1158313 ± -3% +28.7% -1490600 ± -5% sched_debug.cfs_rq:/.spread0.min
561585 ± 3% +26.6% 710858 ± 1% sched_debug.cfs_rq:/.spread0.stddev
421.48 ± 13% +29.0% 543.61 ± 4% sched_debug.cfs_rq:/.util_avg.avg
168.61 ± 17% +26.6% 213.52 ± 6% sched_debug.cfs_rq:/.util_avg.stddev
771938 ± 5% -24.8% 580157 ± 4% sched_debug.cpu.avg_idle.avg
1404008 ± 8% -25.4% 1046878 ± 5% sched_debug.cpu.avg_idle.max
102116 ± 28% -83.2% 17179 ± 59% sched_debug.cpu.avg_idle.min
8.12 ± 35% -47.5% 4.26 ± 11% sched_debug.cpu.clock.stddev
8.12 ± 35% -47.5% 4.26 ± 11% sched_debug.cpu.clock_task.stddev
6.89 ± 14% +28.7% 8.87 ± 9% sched_debug.cpu.cpu_load[0].avg
8.23 ± 13% +26.1% 10.38 ± 4% sched_debug.cpu.cpu_load[1].avg
8.36 ± 13% +27.0% 10.62 ± 4% sched_debug.cpu.cpu_load[2].avg
8.56 ± 13% +28.4% 10.99 ± 3% sched_debug.cpu.cpu_load[3].avg
9.05 ± 12% +28.6% 11.64 ± 2% sched_debug.cpu.cpu_load[4].avg
2481 ± 17% +45.2% 3604 ± 12% sched_debug.cpu.curr->pid.avg
2816 ± 10% +20.0% 3379 ± 2% sched_debug.cpu.curr->pid.stddev
776584 ± 9% -25.6% 577905 ± 10% sched_debug.cpu.max_idle_balance_cost.max
46709 ± 26% -75.5% 11429 ± 72% sched_debug.cpu.max_idle_balance_cost.stddev
0.00 ± 7% +10.2% 0.00 ± 3% sched_debug.cpu.next_balance.stddev
92406 ± 0% +11.6% 103109 ± 1% sched_debug.cpu.nr_load_updates.avg
112923 ± 0% +10.5% 124787 ± 0% sched_debug.cpu.nr_load_updates.max
72587 ± 1% +11.5% 80935 ± 1% sched_debug.cpu.nr_load_updates.min
0.38 ± 16% +31.9% 0.50 ± 8% sched_debug.cpu.nr_running.avg
51528 ± 4% +72.6% 88953 ± 13% sched_debug.cpu.nr_switches.avg
70435 ± 4% +74.7% 123077 ± 14% sched_debug.cpu.nr_switches.max
35395 ± 6% +70.1% 60224 ± 10% sched_debug.cpu.nr_switches.min
11963 ± 5% +78.3% 21328 ± 20% sched_debug.cpu.nr_switches.stddev
58157 ± 5% +77.3% 103088 ± 12% sched_debug.cpu.sched_count.avg
77799 ± 5% +80.3% 140261 ± 13% sched_debug.cpu.sched_count.max
39855 ± 6% +75.2% 69834 ± 10% sched_debug.cpu.sched_count.min
13678 ± 6% +79.5% 24558 ± 19% sched_debug.cpu.sched_count.stddev
23236 ± 5% +80.6% 41960 ± 14% sched_debug.cpu.sched_goidle.avg
31734 ± 5% +83.3% 58158 ± 14% sched_debug.cpu.sched_goidle.max
15443 ± 6% +81.4% 28017 ± 12% sched_debug.cpu.sched_goidle.min
5899 ± 5% +79.0% 10557 ± 20% sched_debug.cpu.sched_goidle.stddev
36829 ± 4% +74.1% 64121 ± 10% sched_debug.cpu.ttwu_count.avg
53547 ± 4% +71.0% 91589 ± 11% sched_debug.cpu.ttwu_count.max
22504 ± 4% +78.3% 40131 ± 9% sched_debug.cpu.ttwu_count.min
11824 ± 7% +56.4% 18492 ± 17% sched_debug.cpu.ttwu_count.stddev
0.95 ± 4% -29.9% 0.67 ± 11% perf-profile.calltrace.cycles-pp.____fput.task_work_run.exit_to_usermode_loop.syscall_return_slowpath.entry_SYSCALL_64_fastpath
2.00 ± 3% -17.2% 1.66 ± 8% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.try_to_wake_up.wake_up_q.rwsem_wake.call_rwsem_wake
28.63 ± 4% -24.8% 21.53 ± 9% perf-profile.calltrace.cycles-pp.call_cpuidle.cpu_startup_entry.start_secondary
50.45 ± 3% +22.2% 61.64 ± 4% perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed.down_write.path_openat.do_filp_open.do_sys_open
3.56 ± 4% -12.7% 3.11 ± 10% perf-profile.calltrace.cycles-pp.call_rwsem_wake.up_write.path_openat.do_filp_open.do_sys_open
28.86 ± 4% -24.7% 21.74 ± 9% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary
28.63 ± 4% -24.8% 21.53 ± 9% perf-profile.calltrace.cycles-pp.cpuidle_enter.call_cpuidle.cpu_startup_entry.start_secondary
28.26 ± 4% -24.8% 21.26 ± 9% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.call_cpuidle.cpu_startup_entry.start_secondary
1.86 ± 7% -21.5% 1.46 ± 8% perf-profile.calltrace.cycles-pp.do_truncate.path_openat.do_filp_open.do_sys_open.sys_creat
51.67 ± 3% +21.2% 62.64 ± 4% perf-profile.calltrace.cycles-pp.down_write.path_openat.do_filp_open.do_sys_open.sys_creat
1.25 ± 4% -48.1% 0.65 ± 59% perf-profile.calltrace.cycles-pp.exit_to_usermode_loop.syscall_return_slowpath.entry_SYSCALL_64_fastpath
1.02 ± 4% -21.2% 0.81 ± 10% perf-profile.calltrace.cycles-pp.get_empty_filp.path_openat.do_filp_open.do_sys_open.sys_creat
28.04 ± 4% -25.6% 20.87 ± 9% perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.cpuidle_enter.call_cpuidle.cpu_startup_entry
1.75 ± 4% -29.5% 1.23 ± 12% perf-profile.calltrace.cycles-pp.link_path_walk.path_openat.do_filp_open.do_sys_open.sys_creat
1.52 ± 5% -19.2% 1.23 ± 14% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock_irqsave.try_to_wake_up.wake_up_q.rwsem_wake
47.16 ± 4% +24.5% 58.73 ± 4% perf-profile.calltrace.cycles-pp.osq_lock.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.path_openat
66.74 ± 2% +12.4% 75.03 ± 3% perf-profile.calltrace.cycles-pp.path_openat.do_filp_open.do_sys_open.sys_creat.entry_SYSCALL_64_fastpath
49.86 ± 3% +22.7% 61.20 ± 4% perf-profile.calltrace.cycles-pp.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.path_openat.do_filp_open
3.53 ± 4% -12.5% 3.09 ± 10% perf-profile.calltrace.cycles-pp.rwsem_wake.call_rwsem_wake.up_write.path_openat.do_filp_open
28.88 ± 4% -24.7% 21.75 ± 9% perf-profile.calltrace.cycles-pp.start_secondary
1.28 ± 4% -48.0% 0.67 ± 59% perf-profile.calltrace.cycles-pp.syscall_return_slowpath.entry_SYSCALL_64_fastpath
1.13 ± 4% -48.5% 0.58 ± 59% perf-profile.calltrace.cycles-pp.task_work_run.exit_to_usermode_loop.syscall_return_slowpath.entry_SYSCALL_64_fastpath
2.29 ± 3% -17.2% 1.89 ± 8% perf-profile.calltrace.cycles-pp.try_to_wake_up.wake_up_q.rwsem_wake.call_rwsem_wake.up_write
4.17 ± 3% -10.9% 3.71 ± 9% perf-profile.calltrace.cycles-pp.up_write.path_openat.do_filp_open.do_sys_open.sys_creat
0.94 ± 6% -27.2% 0.68 ± 11% perf-profile.calltrace.cycles-pp.vfs_open.path_openat.do_filp_open.do_sys_open.sys_creat
2.39 ± 3% -15.9% 2.01 ± 8% perf-profile.calltrace.cycles-pp.wake_up_q.rwsem_wake.call_rwsem_wake.up_write.path_openat
0.95 ± 4% -29.1% 0.68 ± 11% perf-profile.children.cycles-pp.____fput
1.19 ± 8% -24.9% 0.90 ± 21% perf-profile.children.cycles-pp.__inode_permission
2.05 ± 4% -16.2% 1.72 ± 6% perf-profile.children.cycles-pp._raw_spin_lock_irqsave
28.89 ± 4% -24.8% 21.73 ± 9% perf-profile.children.cycles-pp.call_cpuidle
50.49 ± 3% +22.2% 61.69 ± 4% perf-profile.children.cycles-pp.call_rwsem_down_write_failed
3.57 ± 4% -11.3% 3.17 ± 8% perf-profile.children.cycles-pp.call_rwsem_wake
29.12 ± 4% -24.6% 21.95 ± 9% perf-profile.children.cycles-pp.cpu_startup_entry
28.88 ± 4% -24.8% 21.73 ± 9% perf-profile.children.cycles-pp.cpuidle_enter
28.47 ± 4% -24.7% 21.44 ± 9% perf-profile.children.cycles-pp.cpuidle_enter_state
66.91 ± 2% +12.3% 75.16 ± 3% perf-profile.children.cycles-pp.do_filp_open
67.91 ± 2% +11.7% 75.87 ± 2% perf-profile.children.cycles-pp.do_sys_open
1.87 ± 7% -20.5% 1.48 ± 8% perf-profile.children.cycles-pp.do_truncate
51.83 ± 3% +21.1% 62.78 ± 4% perf-profile.children.cycles-pp.down_write
70.10 ± 1% +10.5% 77.47 ± 2% perf-profile.children.cycles-pp.entry_SYSCALL_64_fastpath
1.25 ± 4% -29.5% 0.88 ± 11% perf-profile.children.cycles-pp.exit_to_usermode_loop
1.02 ± 4% -19.8% 0.82 ± 10% perf-profile.children.cycles-pp.get_empty_filp
1.25 ± 8% -25.5% 0.93 ± 21% perf-profile.children.cycles-pp.inode_permission
28.25 ± 4% -25.5% 21.05 ± 9% perf-profile.children.cycles-pp.intel_idle
1.76 ± 4% -28.9% 1.25 ± 11% perf-profile.children.cycles-pp.link_path_walk
47.22 ± 4% +24.5% 58.80 ± 4% perf-profile.children.cycles-pp.osq_lock
66.75 ± 2% +12.4% 75.04 ± 3% perf-profile.children.cycles-pp.path_openat
49.91 ± 3% +22.7% 61.25 ± 4% perf-profile.children.cycles-pp.rwsem_down_write_failed
1.31 ± 5% -33.6% 0.87 ± 21% perf-profile.children.cycles-pp.rwsem_spin_on_owner
3.54 ± 4% -11.2% 3.14 ± 8% perf-profile.children.cycles-pp.rwsem_wake
0.91 ± 10% -29.8% 0.64 ± 12% perf-profile.children.cycles-pp.security_inode_permission
28.88 ± 4% -24.7% 21.75 ± 9% perf-profile.children.cycles-pp.start_secondary
67.99 ± 2% +11.7% 75.93 ± 2% perf-profile.children.cycles-pp.sys_creat
1.29 ± 4% -29.3% 0.91 ± 11% perf-profile.children.cycles-pp.syscall_return_slowpath
1.13 ± 4% -29.4% 0.80 ± 11% perf-profile.children.cycles-pp.task_work_run
2.33 ± 3% -16.3% 1.94 ± 7% perf-profile.children.cycles-pp.try_to_wake_up
4.25 ± 4% -9.7% 3.84 ± 7% perf-profile.children.cycles-pp.up_write
0.95 ± 6% -26.6% 0.70 ± 12% perf-profile.children.cycles-pp.vfs_open
2.40 ± 3% -14.4% 2.06 ± 7% perf-profile.children.cycles-pp.wake_up_q
28.25 ± 4% -25.5% 21.05 ± 9% perf-profile.self.cycles-pp.intel_idle
47.22 ± 4% +24.5% 58.80 ± 4% perf-profile.self.cycles-pp.osq_lock
1.31 ± 5% -33.6% 0.87 ± 21% perf-profile.self.cycles-pp.rwsem_spin_on_owner
Thanks,
Xiaolong
View attachment "config-4.8.0-rc8-00060-gab522e3" of type "text/plain" (152576 bytes)
View attachment "job-script" of type "text/plain" (6428 bytes)
View attachment "job.yaml" of type "text/plain" (4057 bytes)
View attachment "reproduce" of type "text/plain" (1035 bytes)
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