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Date: Wed, 30 Mar 2016 13:46:31 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Andrey Ryabinin <aryabinin@...tuozzo.com>
Cc: LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp] [mm] 39a1aa8e19: will-it-scale.per_process_ops +5.2%
improvement
FYI, we noticed that will-it-scale.per_process_ops +5.2% improvement with your commit.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 39a1aa8e194ab67983de3b9d0b204ccee12e689a ("mm: deduplicate memory overcommitment code")
=========================================================================================
compiler/cpufreq_governor/kconfig/rootfs/tbox_group/test/testcase:
gcc-4.9/performance/x86_64-rhel/debian-x86_64-2015-02-07.cgz/ivb42/malloc1/will-it-scale
commit:
ea606cf5d8df370e7932460dfd960b21f20e7c6d
39a1aa8e194ab67983de3b9d0b204ccee12e689a
ea606cf5d8df370e 39a1aa8e194ab67983de3b9d0b
---------------- --------------------------
%stddev %change %stddev
\ | \
101461 ± 0% +5.2% 106703 ± 0% will-it-scale.per_process_ops
0.10 ± 0% +31.8% 0.13 ± 0% will-it-scale.scalability
6966 ± 8% -9.9% 6278 ± 10% meminfo.AnonHugePages
62767556 ± 10% -24.3% 47486848 ± 7% cpuidle.C3-IVT.time
232686 ± 5% -18.4% 189919 ± 9% cpuidle.C3-IVT.usage
6823970 ± 3% -8.9% 6214309 ± 4% cpuidle.C6-IVT.usage
66703 ± 0% +12.2% 74872 ± 2% numa-vmstat.node0.numa_other
37441585 ± 0% +26.4% 47319887 ± 0% numa-vmstat.node1.numa_hit
37417000 ± 0% +26.4% 47303041 ± 0% numa-vmstat.node1.numa_local
24584 ± 0% -31.5% 16845 ± 11% numa-vmstat.node1.numa_other
6.15 ± 31% +36.2% 8.37 ± 15% sched_debug.cpu.cpu_load[4].stddev
20260 ± 6% +13.4% 22965 ± 5% sched_debug.cpu.nr_switches.min
4450 ± 9% +16.5% 5183 ± 8% sched_debug.cpu.ttwu_local.max
920.59 ± 10% +15.0% 1058 ± 7% sched_debug.cpu.ttwu_local.stddev
2.59e+08 ± 0% +13.9% 2.95e+08 ± 0% numa-numastat.node0.local_node
2.59e+08 ± 0% +13.9% 2.95e+08 ± 0% numa-numastat.node0.numa_hit
10.25 ±119% +75378.0% 7736 ± 19% numa-numastat.node0.other_node
1.097e+08 ± 0% +28.0% 1.404e+08 ± 0% numa-numastat.node1.local_node
1.097e+08 ± 0% +28.0% 1.404e+08 ± 0% numa-numastat.node1.numa_hit
9285 ± 0% -83.1% 1568 ± 98% numa-numastat.node1.other_node
3.687e+08 ± 0% +18.1% 4.354e+08 ± 0% proc-vmstat.numa_hit
3.687e+08 ± 0% +18.1% 4.354e+08 ± 0% proc-vmstat.numa_local
52281716 ± 0% +11.1% 58060959 ± 1% proc-vmstat.pgalloc_dma32
3.943e+08 ± 0% +16.7% 4.603e+08 ± 0% proc-vmstat.pgalloc_normal
1.854e+08 ± 0% +18.0% 2.187e+08 ± 0% proc-vmstat.pgfault
4.465e+08 ± 0% +16.1% 5.183e+08 ± 0% proc-vmstat.pgfree
0.00 ± -1% +Inf% 2.36 ± 12% perf-profile.cycles-pp.__split_vma.isra.36.do_munmap.vm_munmap.sys_munmap.entry_SYSCALL_64_fastpath
2.38 ± 8% -100.0% 0.00 ± -1% perf-profile.cycles-pp.__split_vma.isra.37.do_munmap.vm_munmap.sys_munmap.entry_SYSCALL_64_fastpath
4.37 ± 31% +32.9% 5.80 ± 15% perf-profile.cycles-pp.call_cpuidle.cpu_startup_entry.rest_init.start_kernel.x86_64_start_reservations
4.52 ± 28% +29.4% 5.85 ± 14% perf-profile.cycles-pp.cpu_startup_entry.rest_init.start_kernel.x86_64_start_reservations.x86_64_start_kernel
4.37 ± 31% +32.9% 5.80 ± 15% perf-profile.cycles-pp.cpuidle_enter.call_cpuidle.cpu_startup_entry.rest_init.start_kernel
4.08 ± 34% +39.8% 5.70 ± 15% perf-profile.cycles-pp.cpuidle_enter_state.cpuidle_enter.call_cpuidle.cpu_startup_entry.rest_init
0.89 ± 6% +16.3% 1.04 ± 5% perf-profile.cycles-pp.perf_event_aux.part.46.perf_event_mmap.mmap_region.do_mmap.vm_mmap_pgoff
4.52 ± 28% +29.4% 5.85 ± 14% perf-profile.cycles-pp.rest_init.start_kernel.x86_64_start_reservations.x86_64_start_kernel
4.52 ± 28% +29.4% 5.85 ± 14% perf-profile.cycles-pp.start_kernel.x86_64_start_reservations.x86_64_start_kernel
4.52 ± 28% +29.4% 5.85 ± 14% perf-profile.cycles-pp.x86_64_start_kernel
4.52 ± 28% +29.4% 5.85 ± 14% perf-profile.cycles-pp.x86_64_start_reservations.x86_64_start_kernel
ivb42: Ivytown Ivy Bridge-EP
Memory: 64G
will-it-scale.scalability
0.14 ++-----------OOOO-O-------------------------------------------------+
0.135 ++ O OOO |
| OO O O |
0.13 OOOOOO OOOO O OO OOOOOOOO |
0.125 ++ O |
| |
0.12 ++ |
0.115 ++ |
0.11 ++ |
| * |
0.105 ++ * ***** : |
0.1 ********** ** ***************** ***************** |
| * * * ** * *****
0.095 ++ *** * ** |
0.09 ++------------------------------------------------------------------+
[*] 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 Ye
View attachment "job.yaml" of type "text/plain" (3464 bytes)
View attachment "reproduce" of type "text/plain" (4566 bytes)
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