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Date: Tue, 17 May 2016 12:58:05 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Johannes Weiner <hannes@...xchg.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
Vladimir Davydov <vdavydov@...tuozzo.com>,
Michal Hocko <mhocko@...e.cz>,
David Rientjes <rientjes@...gle.com>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [mm] 23047a96d7: vm-scalability.throughput -23.8% regression
FYI, we noticed vm-scalability.throughput -23.8% regression due to commit:
commit 23047a96d7cfcfca1a6d026ecaec526ea4803e9e ("mm: workingset: per-cgroup cache thrash detection")
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
in testcase: vm-scalability
on test machine: lkp-hsw01: 56 threads Grantley Haswell-EP with 64G memory
with following conditions: cpufreq_governor=performance/runtime=300s/test=lru-file-readtwice
Details are as below:
-------------------------------------------------------------------------------------------------->
=========================================================================================
compiler/cpufreq_governor/kconfig/rootfs/runtime/tbox_group/test/testcase:
gcc-4.9/performance/x86_64-rhel/debian-x86_64-2015-02-07.cgz/300s/lkp-hsw01/lru-file-readtwice/vm-scalability
commit:
612e44939c3c77245ac80843c0c7876c8cf97282
23047a96d7cfcfca1a6d026ecaec526ea4803e9e
612e44939c3c7724 23047a96d7cfcfca1a6d026eca
---------------- --------------------------
%stddev %change %stddev
\ | \
28384711 ± 0% -23.8% 21621405 ± 0% vm-scalability.throughput
1854112 ± 0% -7.7% 1711141 ± 0% vm-scalability.time.involuntary_context_switches
176.03 ± 0% -22.2% 136.95 ± 1% vm-scalability.time.user_time
302905 ± 2% -31.2% 208386 ± 0% vm-scalability.time.voluntary_context_switches
0.92 ± 2% +51.0% 1.38 ± 2% perf-profile.cycles-pp.kswapd
754212 ± 1% -29.2% 533832 ± 2% softirqs.RCU
20518 ± 2% -8.1% 18866 ± 2% vmstat.system.cs
10574 ± 19% +29.9% 13737 ± 8% numa-meminfo.node0.Mapped
13490 ± 13% -36.6% 8549 ± 17% numa-meminfo.node1.Mapped
583.00 ± 8% +18.8% 692.50 ± 5% slabinfo.avc_xperms_node.active_objs
583.00 ± 8% +18.8% 692.50 ± 5% slabinfo.avc_xperms_node.num_objs
176.03 ± 0% -22.2% 136.95 ± 1% time.user_time
302905 ± 2% -31.2% 208386 ± 0% time.voluntary_context_switches
263.42 ± 0% -3.0% 255.52 ± 0% turbostat.PkgWatt
61.05 ± 0% -12.7% 53.26 ± 0% turbostat.RAMWatt
1868 ± 16% -43.7% 1052 ± 13% cpuidle.C1-HSW.usage
1499 ± 9% -30.3% 1045 ± 12% cpuidle.C3-HSW.usage
16071 ± 4% -15.0% 13664 ± 3% cpuidle.C6-HSW.usage
17572 ± 27% -59.1% 7179 ± 5% cpuidle.POLL.usage
4.896e+08 ± 0% -20.7% 3.884e+08 ± 0% numa-numastat.node0.local_node
71305376 ± 2% -19.7% 57223573 ± 4% numa-numastat.node0.numa_foreign
4.896e+08 ± 0% -20.7% 3.884e+08 ± 0% numa-numastat.node0.numa_hit
43760475 ± 3% -22.1% 34074417 ± 5% numa-numastat.node0.numa_miss
43765010 ± 3% -22.1% 34078937 ± 5% numa-numastat.node0.other_node
4.586e+08 ± 0% -25.7% 3.408e+08 ± 1% numa-numastat.node1.local_node
43760472 ± 3% -22.1% 34074417 ± 5% numa-numastat.node1.numa_foreign
4.586e+08 ± 0% -25.7% 3.408e+08 ± 1% numa-numastat.node1.numa_hit
71305376 ± 2% -19.7% 57223573 ± 4% numa-numastat.node1.numa_miss
71311721 ± 2% -19.7% 57229904 ± 4% numa-numastat.node1.other_node
543.25 ± 3% -15.0% 461.50 ± 3% numa-vmstat.node0.nr_isolated_file
2651 ± 19% +30.2% 3451 ± 8% numa-vmstat.node0.nr_mapped
1226 ± 6% -31.7% 837.25 ± 9% numa-vmstat.node0.nr_pages_scanned
37111278 ± 1% -20.6% 29474561 ± 3% numa-vmstat.node0.numa_foreign
2.568e+08 ± 0% -21.0% 2.028e+08 ± 0% numa-vmstat.node0.numa_hit
2.567e+08 ± 0% -21.0% 2.027e+08 ± 0% numa-vmstat.node0.numa_local
22595209 ± 2% -22.9% 17420980 ± 4% numa-vmstat.node0.numa_miss
22665391 ± 2% -22.8% 17490378 ± 4% numa-vmstat.node0.numa_other
88.25 ±173% +1029.7% 997.00 ± 63% numa-vmstat.node0.workingset_activate
3965715 ± 0% -24.9% 2977998 ± 0% numa-vmstat.node0.workingset_nodereclaim
90.25 ±170% +1006.4% 998.50 ± 63% numa-vmstat.node0.workingset_refault
612.50 ± 3% -9.4% 554.75 ± 4% numa-vmstat.node1.nr_alloc_batch
3279 ± 14% -34.1% 2161 ± 17% numa-vmstat.node1.nr_mapped
22597658 ± 2% -22.9% 17423271 ± 4% numa-vmstat.node1.numa_foreign
2.403e+08 ± 0% -25.9% 1.781e+08 ± 1% numa-vmstat.node1.numa_hit
2.403e+08 ± 0% -25.9% 1.781e+08 ± 1% numa-vmstat.node1.numa_local
37115261 ± 1% -20.6% 29478460 ± 3% numa-vmstat.node1.numa_miss
37136533 ± 1% -20.6% 29500409 ± 3% numa-vmstat.node1.numa_other
6137 ±173% +257.3% 21927 ± 60% numa-vmstat.node1.workingset_activate
3237162 ± 0% -30.6% 2246385 ± 1% numa-vmstat.node1.workingset_nodereclaim
6139 ±173% +257.2% 21930 ± 60% numa-vmstat.node1.workingset_refault
501243 ± 0% -26.9% 366510 ± 1% proc-vmstat.allocstall
28483 ± 0% -50.7% 14047 ± 3% proc-vmstat.kswapd_low_wmark_hit_quickly
1.151e+08 ± 0% -20.7% 91297990 ± 0% proc-vmstat.numa_foreign
9.482e+08 ± 0% -23.1% 7.293e+08 ± 0% proc-vmstat.numa_hit
9.482e+08 ± 0% -23.1% 7.293e+08 ± 0% proc-vmstat.numa_local
1.151e+08 ± 0% -20.7% 91297990 ± 0% proc-vmstat.numa_miss
1.151e+08 ± 0% -20.7% 91308842 ± 0% proc-vmstat.numa_other
31562 ± 0% -47.1% 16687 ± 2% proc-vmstat.pageoutrun
1.048e+09 ± 0% -22.8% 8.088e+08 ± 0% proc-vmstat.pgactivate
28481000 ± 0% -21.3% 22422907 ± 0% proc-vmstat.pgalloc_dma32
1.035e+09 ± 0% -22.9% 7.984e+08 ± 0% proc-vmstat.pgalloc_normal
1.041e+09 ± 0% -23.0% 8.024e+08 ± 0% proc-vmstat.pgdeactivate
1.063e+09 ± 0% -22.8% 8.2e+08 ± 0% proc-vmstat.pgfree
2458 ± 91% -93.5% 160.75 ± 29% proc-vmstat.pgmigrate_success
27571690 ± 0% -20.6% 21889554 ± 0% proc-vmstat.pgrefill_dma32
1.014e+09 ± 0% -23.0% 7.805e+08 ± 0% proc-vmstat.pgrefill_normal
25263166 ± 0% -27.4% 18337251 ± 1% proc-vmstat.pgscan_direct_dma32
9.377e+08 ± 0% -26.9% 6.852e+08 ± 1% proc-vmstat.pgscan_direct_normal
2134103 ± 1% +57.6% 3363418 ± 6% proc-vmstat.pgscan_kswapd_dma32
69594167 ± 0% +26.7% 88192786 ± 2% proc-vmstat.pgscan_kswapd_normal
25260851 ± 0% -27.4% 18335464 ± 1% proc-vmstat.pgsteal_direct_dma32
9.376e+08 ± 0% -26.9% 6.852e+08 ± 1% proc-vmstat.pgsteal_direct_normal
2133563 ± 1% +57.6% 3362346 ± 6% proc-vmstat.pgsteal_kswapd_dma32
69585316 ± 0% +26.7% 88176045 ± 2% proc-vmstat.pgsteal_kswapd_normal
17530080 ± 0% -23.3% 13440416 ± 0% proc-vmstat.slabs_scanned
6226 ±173% +268.2% 22924 ± 58% proc-vmstat.workingset_activate
7202139 ± 0% -27.5% 5223203 ± 0% proc-vmstat.workingset_nodereclaim
6230 ±173% +268.0% 22929 ± 58% proc-vmstat.workingset_refault
123.70 ± 12% +26.7% 156.79 ± 11% sched_debug.cfs_rq:/.load.stddev
42.08 ± 1% +23.3% 51.90 ± 8% sched_debug.cfs_rq:/.load_avg.avg
779.50 ± 2% +20.7% 940.83 ± 5% sched_debug.cfs_rq:/.load_avg.max
9.46 ± 8% -13.7% 8.17 ± 1% sched_debug.cfs_rq:/.load_avg.min
123.38 ± 2% +31.4% 162.10 ± 6% sched_debug.cfs_rq:/.load_avg.stddev
304497 ± 22% +65.6% 504169 ± 7% sched_debug.cfs_rq:/.min_vruntime.stddev
25.74 ± 8% +33.9% 34.46 ± 8% sched_debug.cfs_rq:/.runnable_load_avg.avg
481.33 ± 11% +50.5% 724.54 ± 11% sched_debug.cfs_rq:/.runnable_load_avg.max
69.65 ± 15% +62.2% 112.95 ± 12% sched_debug.cfs_rq:/.runnable_load_avg.stddev
-1363122 ±-14% +52.6% -2080627 ±-10% sched_debug.cfs_rq:/.spread0.min
304448 ± 22% +65.6% 504111 ± 7% sched_debug.cfs_rq:/.spread0.stddev
733220 ± 5% +13.0% 828548 ± 1% sched_debug.cpu.avg_idle.avg
123344 ± 11% +73.4% 213827 ± 27% sched_debug.cpu.avg_idle.min
233732 ± 5% -13.5% 202264 ± 6% sched_debug.cpu.avg_idle.stddev
26.93 ± 9% +27.8% 34.42 ± 8% sched_debug.cpu.cpu_load[0].avg
78.79 ± 19% +43.7% 113.20 ± 12% sched_debug.cpu.cpu_load[0].stddev
26.23 ± 8% +30.5% 34.23 ± 7% sched_debug.cpu.cpu_load[1].avg
513.17 ± 12% +38.6% 711.12 ± 11% sched_debug.cpu.cpu_load[1].max
73.34 ± 15% +50.7% 110.55 ± 11% sched_debug.cpu.cpu_load[1].stddev
25.93 ± 6% +32.6% 34.40 ± 6% sched_debug.cpu.cpu_load[2].avg
488.38 ± 8% +44.8% 706.96 ± 10% sched_debug.cpu.cpu_load[2].max
69.79 ± 10% +56.9% 109.52 ± 10% sched_debug.cpu.cpu_load[2].stddev
25.89 ± 4% +35.1% 34.97 ± 4% sched_debug.cpu.cpu_load[3].avg
467.83 ± 7% +50.2% 702.71 ± 9% sched_debug.cpu.cpu_load[3].max
67.27 ± 9% +63.6% 110.03 ± 8% sched_debug.cpu.cpu_load[3].stddev
25.83 ± 4% +37.2% 35.44 ± 3% sched_debug.cpu.cpu_load[4].avg
445.29 ± 9% +56.7% 697.88 ± 8% sched_debug.cpu.cpu_load[4].max
64.41 ± 9% +72.4% 111.02 ± 6% sched_debug.cpu.cpu_load[4].stddev
123.66 ± 12% +28.2% 158.54 ± 11% sched_debug.cpu.load.stddev
1.56 ± 1% +9.8% 1.71 ± 0% sched_debug.cpu.nr_running.avg
0.46 ± 12% +28.4% 0.59 ± 6% sched_debug.cpu.nr_running.stddev
57967 ± 3% -9.8% 52290 ± 2% sched_debug.cpu.nr_switches.avg
270099 ± 9% -16.4% 225748 ± 7% sched_debug.cpu.nr_switches.max
27370 ± 1% -13.3% 23723 ± 0% sched_debug.cpu.nr_switches.min
55749 ± 7% -14.3% 47767 ± 5% sched_debug.cpu.nr_switches.stddev
-55.33 ±-19% -40.4% -32.96 ± -2% sched_debug.cpu.nr_uninterruptible.min
=========================================================================================
compiler/kconfig/rootfs/sleep/tbox_group/testcase:
gcc-5/x86_64-randconfig-a0-04240012/yocto-minimal-i386.cgz/1/vm-kbuild-yocto-ia32/boot
commit:
612e44939c3c77245ac80843c0c7876c8cf97282
23047a96d7cfcfca1a6d026ecaec526ea4803e9e
612e44939c3c7724 23047a96d7cfcfca1a6d026eca
---------------- --------------------------
fail:runs %reproduction fail:runs
| | |
:50 2% 1:180 kmsg.augmented_rbtree_testing
:50 216% 108:180 last_state.is_incomplete_run
vm-scalability.time.user_time
180 *+**-*-----*-*-*--*-*---*----*-*-**------**-*-**-**------*-**---------+
175 ++ **.* * *.* *.* **.* *.** + .*.**.*
| ** |
170 ++ |
165 ++ |
| |
160 ++ |
155 ++ |
150 ++ |
| O |
145 O+ O O OO O |
140 ++ OO O |
| OO O O O O O OO O O |
135 ++ O O O O OO O O O |
130 ++-------------O------------------------------------------------------+
vm-scalability.throughput
2.9e+07 ++------*--------------------------*---------------*--------------+
|.* * *.* .**.**.* .*.**. *. .* **. *. .* * *.* .* .**.**.*
2.8e+07 *+ *.* * * * ** * * *.* * * |
2.7e+07 ++ |
| |
2.6e+07 ++ |
| |
2.5e+07 ++ |
| |
2.4e+07 ++ |
2.3e+07 ++O OO O |
O O OO O |
2.2e+07 ++ |
| OO OO OO O OO OO OO OO OO OO O OO |
2.1e+07 ++----------------------------------------------------------------+
[*] 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" (3531 bytes)
View attachment "reproduce" of type "text/plain" (12116 bytes)
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