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Date: Mon, 5 Dec 2022 13:54:18 +0800
From: kernel test robot <yujie.liu@...el.com>
To: Shakeel Butt <shakeelb@...gle.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Marek Szyprowski <m.szyprowski@...sung.com>,
Linux Memory Management List <linux-mm@...ck.org>,
<linux-kernel@...r.kernel.org>, <ying.huang@...el.com>,
<feng.tang@...el.com>, <zhengjun.xing@...ux.intel.com>,
<fengwei.yin@...el.com>
Subject: [linux-next:master] [mm] f1a7941243: unixbench.score -5.1% regression
Greeting,
FYI, we noticed a -5.1% regression of unixbench.score due to commit:
commit: f1a7941243c102a44e8847e3b94ff4ff3ec56f25 ("mm: convert mm's rss stats into percpu_counter")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: unixbench
on test machine: 128 threads 4 sockets Intel(R) Xeon(R) Gold 6338 CPU @ 2.00GHz (Ice Lake) with 256G memory
with following parameters:
runtime: 300s
nr_task: 1
test: shell8
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:
=========================================================================================
compiler/cpufreq_governor/kconfig/nr_task/rootfs/runtime/tbox_group/test/testcase:
gcc-11/performance/x86_64-rhel-8.3/1/debian-11.1-x86_64-20220510.cgz/300s/lkp-icl-2sp2/shell8/unixbench
commit:
9cd6ffa602 ("selftests/damon: add tests for DAMON_LRU_SORT's enabled parameter")
f1a7941243 ("mm: convert mm's rss stats into percpu_counter")
9cd6ffa60256e931 f1a7941243c102a44e8847e3b94
---------------- ---------------------------
%stddev %change %stddev
\ | \
7917 -5.1% 7509 unixbench.score
10485 -12.1% 9216 unixbench.time.maximum_resident_set_size
37236706 -5.1% 35324104 unixbench.time.minor_page_faults
567.67 -1.3% 560.50 unixbench.time.percent_of_cpu_this_job_got
215.51 +3.7% 223.41 unixbench.time.system_time
143.81 -8.0% 132.23 unixbench.time.user_time
1075861 -4.0% 1033025 unixbench.time.voluntary_context_switches
299268 -4.9% 284627 unixbench.workload
13368320 ± 7% +18.1% 15788032 ± 6% meminfo.DirectMap2M
44104 -3.2% 42701 vmstat.system.cs
0.98 ± 20% +0.7 1.64 ± 38% perf-profile.calltrace.cycles-pp.link_path_walk.path_openat.do_filp_open.do_sys_openat2.__x64_sys_openat
2.12 ± 19% +0.8 2.96 ± 13% perf-profile.calltrace.cycles-pp.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
2.35 ± 13% +0.9 3.28 ± 13% perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.do_user_addr_fault.exc_page_fault.asm_exc_page_fault
0.14 ± 74% +0.4 0.55 ± 32% perf-profile.children.cycles-pp.do_task_dead
0.04 ±223% +0.4 0.47 ± 49% perf-profile.children.cycles-pp.__mmdrop
25909747 -5.1% 24594282 proc-vmstat.numa_hit
25735224 -5.1% 24419554 proc-vmstat.numa_local
46218815 -5.1% 43858849 proc-vmstat.pgalloc_normal
37577543 -5.1% 35663315 proc-vmstat.pgfault
46035593 -5.1% 43669821 proc-vmstat.pgfree
1592335 -3.9% 1529709 proc-vmstat.pgreuse
38041 -5.1% 36089 proc-vmstat.thp_fault_alloc
532220 -5.1% 504893 proc-vmstat.unevictable_pgs_culled
11.43 +7.9% 12.34 perf-stat.i.MPKI
4.415e+09 -3.2% 4.272e+09 perf-stat.i.branch-instructions
1.71 -0.0 1.67 perf-stat.i.branch-miss-rate%
74672466 -5.3% 70687323 perf-stat.i.branch-misses
14.90 +1.3 16.18 perf-stat.i.cache-miss-rate%
38201955 +14.5% 43725695 perf-stat.i.cache-misses
2.517e+08 +5.0% 2.644e+08 perf-stat.i.cache-references
46317 -3.8% 44553 perf-stat.i.context-switches
0.94 +1.7% 0.96 perf-stat.i.cpi
2.032e+10 -1.5% 2.002e+10 perf-stat.i.cpu-cycles
2760 -6.3% 2585 perf-stat.i.cpu-migrations
0.05 +0.0 0.07 ± 34% perf-stat.i.dTLB-load-miss-rate%
2687620 +37.3% 3690868 ± 35% perf-stat.i.dTLB-load-misses
5.592e+09 -3.0% 5.422e+09 perf-stat.i.dTLB-loads
0.09 +0.0 0.09 ± 8% perf-stat.i.dTLB-store-miss-rate%
3.295e+09 -3.6% 3.175e+09 perf-stat.i.dTLB-stores
2.162e+10 -2.9% 2.1e+10 perf-stat.i.instructions
1.06 -1.5% 1.05 perf-stat.i.ipc
0.16 -1.5% 0.16 perf-stat.i.metric.GHz
188.29 +21.3% 228.40 perf-stat.i.metric.K/sec
105.85 -3.1% 102.57 perf-stat.i.metric.M/sec
580192 -5.4% 548596 perf-stat.i.minor-faults
7332887 +14.4% 8388008 perf-stat.i.node-load-misses
197858 +2.4% 202553 perf-stat.i.node-loads
77.77 +4.8 82.56 perf-stat.i.node-store-miss-rate%
8653164 +45.4% 12581116 perf-stat.i.node-store-misses
2454964 +5.3% 2585143 perf-stat.i.node-stores
580247 -5.4% 548650 perf-stat.i.page-faults
11.64 +8.1% 12.59 perf-stat.overall.MPKI
1.69 -0.0 1.65 perf-stat.overall.branch-miss-rate%
15.18 +1.4 16.54 perf-stat.overall.cache-miss-rate%
0.94 +1.4% 0.95 perf-stat.overall.cpi
531.91 -13.9% 457.79 perf-stat.overall.cycles-between-cache-misses
0.05 +0.0 0.07 ± 34% perf-stat.overall.dTLB-load-miss-rate%
0.09 +0.0 0.10 ± 8% perf-stat.overall.dTLB-store-miss-rate%
1.06 -1.4% 1.05 perf-stat.overall.ipc
77.90 +5.1 82.95 perf-stat.overall.node-store-miss-rate%
4574083 +2.5% 4688385 perf-stat.overall.path-length
4.344e+09 -3.2% 4.203e+09 perf-stat.ps.branch-instructions
73479648 -5.3% 69558968 perf-stat.ps.branch-misses
37586020 +14.5% 43024951 perf-stat.ps.cache-misses
2.477e+08 +5.0% 2.601e+08 perf-stat.ps.cache-references
45573 -3.8% 43840 perf-stat.ps.context-switches
1.999e+10 -1.5% 1.97e+10 perf-stat.ps.cpu-cycles
2715 -6.3% 2543 perf-stat.ps.cpu-migrations
2644325 +37.3% 3631630 ± 35% perf-stat.ps.dTLB-load-misses
5.502e+09 -3.0% 5.336e+09 perf-stat.ps.dTLB-loads
3.242e+09 -3.6% 3.124e+09 perf-stat.ps.dTLB-stores
2.127e+10 -2.9% 2.066e+10 perf-stat.ps.instructions
570836 -5.4% 539805 perf-stat.ps.minor-faults
7214650 +14.4% 8253560 perf-stat.ps.node-load-misses
194668 +2.4% 199305 perf-stat.ps.node-loads
8513681 +45.4% 12379540 perf-stat.ps.node-store-misses
2415376 +5.3% 2543709 perf-stat.ps.node-stores
570889 -5.4% 539858 perf-stat.ps.page-faults
1.369e+12 -2.5% 1.334e+12 perf-stat.total.instructions
If you fix the issue, kindly add following tag
| Reported-by: kernel test robot <yujie.liu@...el.com>
| Link: https://lore.kernel.org/oe-lkp/202212051324.182a6363-yujie.liu@intel.com
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
sudo bin/lkp install job.yaml # job file is attached in this email
bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
sudo bin/lkp run generated-yaml-file
# if come across any failure that blocks the test,
# please remove ~/.lkp and /lkp dir to run from a clean state.
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.
--
0-DAY CI Kernel Test Service
https://01.org/lkp
View attachment "config-6.1.0-rc4-00152-gf1a7941243c1" of type "text/plain" (166068 bytes)
View attachment "job-script" of type "text/plain" (7950 bytes)
View attachment "job.yaml" of type "text/plain" (5416 bytes)
View attachment "reproduce" of type "text/plain" (277 bytes)
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