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Message-ID: <20190930084604.GC17687@shao2-debian>
Date: Mon, 30 Sep 2019 16:46:05 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Yang Shi <yang.shi@...ux.alibaba.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
Kirill Tkhai <ktkhai@...tuozzo.com>,
Johannes Weiner <hannes@...xchg.org>,
Michal Hocko <mhocko@...e.com>,
Hugh Dickins <hughd@...gle.com>,
Shakeel Butt <shakeelb@...gle.com>,
David Rientjes <rientjes@...gle.com>, Qian Cai <cai@....pw>,
Vladimir Davydov <vdavydov.dev@...il.com>,
Andrew Morton <akpm@...ux-foundation.org>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [mm] 87eaceb3fa: stress-ng.madvise.ops_per_sec -19.6% regression
Greeting,
FYI, we noticed a -19.6% regression of stress-ng.madvise.ops_per_sec due to commit:
commit: 87eaceb3faa59b9b4d940ec9554ce251325d83fe ("mm: thp: make deferred split shrinker memcg aware")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
in testcase: stress-ng
on test machine: 72 threads Intel(R) Xeon(R) Gold 6140 CPU @ 2.30GHz with 192G memory
with following parameters:
nr_threads: 100%
disk: 1HDD
testtime: 1s
class: vm
ucode: 0x200005e
cpufreq_governor: performance
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen@...el.com>
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
=========================================================================================
class/compiler/cpufreq_governor/disk/kconfig/nr_threads/rootfs/tbox_group/testcase/testtime/ucode:
vm/gcc-7/performance/1HDD/x86_64-rhel-7.6/100%/debian-x86_64-2019-05-14.cgz/lkp-skl-2sp8/stress-ng/1s/0x200005e
commit:
0a432dcbeb ("mm: shrinker: make shrinker not depend on memcg kmem")
87eaceb3fa ("mm: thp: make deferred split shrinker memcg aware")
0a432dcbeb32edcd 87eaceb3faa59b9b4d940ec9554
---------------- ---------------------------
%stddev %change %stddev
\ | \
6457 -19.5% 5198 stress-ng.madvise.ops
6409 -19.6% 5154 stress-ng.madvise.ops_per_sec
3575 -26.8% 2618 ± 6% stress-ng.mremap.ops
3575 -26.9% 2613 ± 6% stress-ng.mremap.ops_per_sec
15.77 -5.8% 14.85 ± 2% iostat.cpu.user
3427944 ± 4% -9.3% 3109984 meminfo.AnonPages
33658 ± 22% +69791.3% 23524535 ±165% sched_debug.cfs_rq:/.load.max
19951 ± 7% +13.3% 22611 ± 3% softirqs.CPU54.TIMER
109.94 -4.1% 105.41 turbostat.RAMWatt
5.89 ± 62% -3.1 2.78 ±173% perf-profile.calltrace.cycles-pp.page_fault
3.39 ±101% -0.6 2.78 ±173% perf-profile.calltrace.cycles-pp.do_page_fault.page_fault
3.39 ±101% -0.6 2.78 ±173% perf-profile.calltrace.cycles-pp.__do_page_fault.do_page_fault.page_fault
5.28 ±100% -5.3 0.00 perf-profile.children.cycles-pp.___might_sleep
5.28 ±100% -5.3 0.00 perf-profile.self.cycles-pp.___might_sleep
885704 ± 5% -11.0% 787888 ± 6% proc-vmstat.nr_anon_pages
1.742e+08 ± 5% -9.6% 1.576e+08 ± 2% proc-vmstat.pgalloc_normal
1.741e+08 ± 5% -9.6% 1.575e+08 ± 2% proc-vmstat.pgfree
375505 -19.4% 302688 proc-vmstat.pglazyfree
55236 ± 38% -55.5% 24552 ± 41% proc-vmstat.thp_deferred_split_page
55234 ± 38% -55.6% 24543 ± 41% proc-vmstat.thp_fault_alloc
3218 -19.4% 2595 proc-vmstat.thp_split_page
12163 ± 7% -22.1% 9473 ± 12% proc-vmstat.thp_split_pmd
8193516 +3.2% 8459146 proc-vmstat.unevictable_pgs_scanned
79085 ± 10% -7.8% 72890 interrupts.CAL:Function_call_interrupts
1139 ± 9% -10.7% 1018 ± 3% interrupts.CPU0.CAL:Function_call_interrupts
3596 ± 3% -13.8% 3100 ± 8% interrupts.CPU20.TLB:TLB_shootdowns
3602 ± 4% -12.6% 3149 ± 10% interrupts.CPU23.TLB:TLB_shootdowns
3512 ± 5% -9.9% 3163 ± 9% interrupts.CPU25.TLB:TLB_shootdowns
3512 ± 3% -12.1% 3088 ± 9% interrupts.CPU26.TLB:TLB_shootdowns
3610 ± 5% -13.2% 3134 ± 5% interrupts.CPU29.TLB:TLB_shootdowns
3602 ± 5% -17.4% 2973 ± 8% interrupts.CPU31.TLB:TLB_shootdowns
3548 ± 4% -12.7% 3098 ± 6% interrupts.CPU32.TLB:TLB_shootdowns
3637 ± 5% -15.2% 3085 ± 7% interrupts.CPU35.TLB:TLB_shootdowns
3588 ± 3% -12.7% 3131 ± 9% interrupts.CPU56.TLB:TLB_shootdowns
3664 ± 5% -14.3% 3142 ± 10% interrupts.CPU59.TLB:TLB_shootdowns
3542 ± 6% -13.0% 3082 ± 5% interrupts.CPU64.TLB:TLB_shootdowns
3539 ± 5% +12.4% 3977 ± 11% interrupts.CPU7.TLB:TLB_shootdowns
3485 ± 5% -13.0% 3033 ± 10% interrupts.CPU70.TLB:TLB_shootdowns
3651 ± 4% -16.1% 3062 ± 9% interrupts.CPU71.TLB:TLB_shootdowns
1.557e+10 ± 2% -8.1% 1.431e+10 ± 3% perf-stat.i.branch-instructions
1.887e+08 ± 9% -21.4% 1.484e+08 perf-stat.i.cache-misses
5.026e+08 ± 2% -8.6% 4.595e+08 ± 4% perf-stat.i.cache-references
2609 ± 3% +6.0% 2766 perf-stat.i.cycles-between-cache-misses
7.344e+09 -6.6% 6.861e+09 ± 3% perf-stat.i.dTLB-stores
6.969e+10 -7.6% 6.44e+10 ± 3% perf-stat.i.instructions
0.37 ± 2% -7.2% 0.34 perf-stat.i.ipc
43.29 ± 5% +3.7 46.94 ± 4% perf-stat.i.node-load-miss-rate%
15474576 ± 8% -23.9% 11782653 ± 13% perf-stat.i.node-load-misses
28.50 ± 6% +3.2 31.74 ± 3% perf-stat.i.node-store-miss-rate%
26447212 ± 5% -11.6% 23382361 ± 4% perf-stat.i.node-stores
0.61 +0.0 0.65 perf-stat.overall.branch-miss-rate%
37.58 ± 8% -5.2 32.39 ± 4% perf-stat.overall.cache-miss-rate%
2.91 ± 2% +3.4% 3.00 perf-stat.overall.cpi
1091 ± 10% +19.5% 1303 ± 3% perf-stat.overall.cycles-between-cache-misses
0.17 +0.0 0.18 ± 3% perf-stat.overall.dTLB-store-miss-rate%
5922 -6.6% 5533 ± 2% perf-stat.overall.instructions-per-iTLB-miss
0.34 ± 2% -3.3% 0.33 perf-stat.overall.ipc
1.462e+10 ± 2% -5.3% 1.384e+10 ± 3% perf-stat.ps.branch-instructions
1.765e+08 ± 10% -18.7% 1.435e+08 perf-stat.ps.cache-misses
6.926e+09 -4.0% 6.648e+09 ± 3% perf-stat.ps.dTLB-stores
6.555e+10 -5.0% 6.229e+10 ± 3% perf-stat.ps.instructions
14736035 ± 8% -21.6% 11547658 ± 14% perf-stat.ps.node-load-misses
2.703e+12 -4.4% 2.585e+12 ± 2% perf-stat.total.instructions
stress-ng.madvise.ops
7000 +-+------------------------------------------------------------------+
6800 +-+ + |
| : |
6600 +-+.+ ++.+ +.+ ++ + ++. : :+.+ +. ++ .++ +. ++ + +. + |
6400 +-+ ++ ++ + +.+ + ++ + ++ + : + ++ + ++.+ + ++ :+.++|
| + + |
6200 +-+ |
6000 +-+ |
5800 +-+ |
| |
5600 +-+ |
5400 +-+ |
OO OOO O O O O O O O O O O |
5200 +-O O O OO OO OO O OOO O OO O O OOOO O O |
5000 +-+------------------------------------------------------------------+
stress-ng.madvise.ops_per_sec
7000 +-+------------------------------------------------------------------+
6800 +-+ + |
| : |
6600 +-+ : : |
6400 +-+.+++++.++++.+++++.+++++.++ ++.++++.+ +++.+++++.+++++.++++.++ ++.++|
| + + |
6200 +-+ |
6000 +-+ |
5800 +-+ |
| |
5600 +-+ |
5400 +-+ |
|O O O O O O |
5200 O-O O OOO O OO OO OOOOO OOOOO OOOO OO O O O |
5000 +-+---------O---------------------------OO---------------------------+
[*] bisect-good sample
[O] bisect-bad sample
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,
Rong Chen
View attachment "config-5.3.0-11872-g87eaceb3faa59" of type "text/plain" (200456 bytes)
View attachment "job-script" of type "text/plain" (7680 bytes)
View attachment "job.yaml" of type "text/plain" (5317 bytes)
View attachment "reproduce" of type "text/plain" (382 bytes)
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