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Message-ID: <20170313192223.GC41055@jaegeuk.local>
Date: Mon, 13 Mar 2017 12:22:23 -0700
From: Jaegeuk Kim <jaegeuk@...nel.org>
To: Thorsten Leemhuis <regressions@...mhuis.info>
Cc: Chao Yu <yuchao0@...wei.com>,
kernel test robot <xiaolong.ye@...el.com>, lkp@...org,
linux-kernel@...r.kernel.org
Subject: Re: [lkp-robot] [f2fs] 4ac912427c: -33.7% aim7.jobs-per-min
regression
On 03/13, Thorsten Leemhuis wrote:
> @Chao Yu/@...geuk Kim: I'm considering to add this to the regressions
> report for 4.11; or is there a reason why it shouldn't be considered a
> regression? Ciao, Thorsten
Hi,
I'm planning to submit f2fs updates for 4.11-rcX including a patch which
resolves this issue as well, as I expect.
https://lkml.org/lkml/2017/3/7/813
Thanks,
>
> On 08.03.2017 02:21, kernel test robot wrote:
> >
> > Greeting,
> >
> > We noticed a -33.7 regression of aim7.jobs-per-min due to commit:
> >
> > commit: 4ac912427c4214d8031d9ad6fbc3bc75e71512df ("f2fs: introduce free nid bitmap")
> > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
> >
> > in testcase: aim7
> > on test machine: 40 threads Intel(R) Xeon(R) CPU E5-2690 v2 @ 3.00GHz with 384G memory
> > with following parameters:
> >
> > disk: 1BRD_48G
> > fs: f2fs
> > test: disk_wrt
> > load: 3000
> > cpufreq_governor: performance
> >
> > test-description: AIM7 is a traditional UNIX system level benchmark suite which is used to test and measure the performance of multiuser system.
> > test-url: https://sourceforge.net/projects/aimbench/files/aim-suite7/
> >
> >
> >
> > 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
> >
> > testcase/path_params/tbox_group/run: aim7/1BRD_48G-f2fs-disk_wrt-3000-performance/lkp-ivb-ep01
> >
> > ced2c7ea8e99b467 4ac912427c4214d8031d9ad6fb
> > ---------------- --------------------------
> > %stddev change %stddev
> > \ | \
> > 117419 ± 1% -33.7% 77863 ± 0% aim7.jobs-per-min
> > 153.78 ± 1% +50.6% 231.63 ± 0% aim7.time.elapsed_time
> > 153.78 ± 1% +50.6% 231.63 ± 0% aim7.time.elapsed_time.max
> > 805644 ± 3% +11.3% 896604 ± 0% aim7.time.involuntary_context_switches
> > 5408 ± 1% +15.4% 6240 ± 0% aim7.time.system_time
> > 5066069 ± 0% +10.5% 5600256 ± 9% meminfo.DirectMap2M
> > 135538 ± 8% -41.9% 78738 ± 8% meminfo.Dirty
> > 980.67 ± 16% -67.8% 315.50 ± 12% meminfo.Writeback
> > 71322 ± 10% -44.0% 39953 ± 1% numa-meminfo.node0.Dirty
> > 11158 ± 18% -27.1% 8132 ± 0% numa-meminfo.node0.Mapped
> > 56776 ± 6% -32.5% 38309 ± 0% numa-meminfo.node1.Dirty
> > 9684 ± 22% +30.9% 12676 ± 0% numa-meminfo.node1.Mapped
> > 6069 ± 57% -78.1% 1328 ± 18% softirqs.NET_RX
> > 619333 ± 4% +8.0% 669152 ± 3% softirqs.RCU
> > 128030 ± 2% +33.3% 170724 ± 0% softirqs.SCHED
> > 2331994 ± 1% +15.3% 2688290 ± 0% softirqs.TIMER
> > 7701 ± 1% -35.7% 4948 ± 3% vmstat.io.bo
> > 64.67 ± 2% -39.7% 39.00 ± 2% vmstat.procs.b
> > 333.33 ± 7% -48.5% 171.50 ± 2% vmstat.procs.r
> > 17530 ± 1% -23.4% 13425 ± 1% vmstat.system.cs
> > 47642 ± 1% -5.3% 45100 ± 1% vmstat.system.in
> > 33522 ± 4% -43.1% 19068 ± 0% proc-vmstat.nr_dirty
> > 236.00 ± 14% -66.1% 80.00 ± 3% proc-vmstat.nr_writeback
> > 33907 ± 4% -43.3% 19222 ± 0% proc-vmstat.nr_zone_write_pending
> > 28194 ± 10% +10.4% 31131 ± 6% proc-vmstat.pgactivate
> > 746402 ± 2% +24.6% 929960 ± 3% proc-vmstat.pgfault
> > 153.78 ± 1% +50.6% 231.63 ± 0% time.elapsed_time
> > 153.78 ± 1% +50.6% 231.63 ± 0% time.elapsed_time.max
> > 805644 ± 3% +11.3% 896604 ± 0% time.involuntary_context_switches
> > 3524 ± 0% -23.4% 2701 ± 0% time.percent_of_cpu_this_job_got
> > 5408 ± 1% +15.4% 6240 ± 0% time.system_time
> > 12.19 ± 1% +36.7% 16.66 ± 0% time.user_time
> > 48260939 ± 3% +12.1% 54110616 ± 2% cpuidle.C1-IVT.time
> > 33149237 ± 5% +52.6% 50597349 ± 1% cpuidle.C1E-IVT.time
> > 89642 ± 4% +52.8% 136976 ± 0% cpuidle.C1E-IVT.usage
> > 13534795 ± 6% +276.3% 50934566 ± 55% cpuidle.C3-IVT.time
> > 42893 ± 6% +138.8% 102439 ± 30% cpuidle.C3-IVT.usage
> > 6.431e+08 ± 2% +390.1% 3.152e+09 ± 10% cpuidle.C6-IVT.time
> > 802009 ± 2% +375.3% 3811880 ± 10% cpuidle.C6-IVT.usage
> > 1535987 ± 4% +156.3% 3936830 ± 4% cpuidle.POLL.time
> > 88.14 ± 0% -24.9% 66.17 ± 3% turbostat.%Busy
> > 2659 ± 0% -44.7% 1471 ± 3% turbostat.Avg_MHz
> > 3016 ± 0% -26.3% 2224 ± 0% turbostat.Bzy_MHz
> > 5.20 ± 5% +127.0% 11.80 ± 2% turbostat.CPU%c1
> >
> >
> >
> > perf-stat.page-faults
> >
> > 1e+06 ++-----------------------------------------------------------------+
> > 900000 O+O O O O O O O O |
> > | O O O O O O O O O O |
> > 800000 ++ .*.*. .*. .*. .*.. |
> > 700000 ++*.*.*.*.*..*.* *.*.*.*.*.*..*.* * *.*.*.*.* *.*.*.* *
> > | : : |
> > 600000 ++: : |
> > 500000 ++ : :|
> > 400000 ++ : :|
> > |: : :|
> > 300000 ++ : :|
> > 200000 ++ : :|
> > | : |
> > 100000 ++ : |
> > 0 *+------------------------------------O-O------------------------*-+
> >
> >
> > perf-stat.minor-faults
> >
> > 1e+06 ++-----------------------------------------------------------------+
> > 900000 O+O O O O O O O O |
> > | O O O O O O O O O O |
> > 800000 ++ .*.*. .*. .*. .*.. |
> > 700000 ++*.*.*.*.*..*.* *.*.*.*.*.*..*.* * *.*.*.*.* *.*.*.* *
> > | : : |
> > 600000 ++: : |
> > 500000 ++ : :|
> > 400000 ++ : :|
> > |: : :|
> > 300000 ++ : :|
> > 200000 ++ : :|
> > | : |
> > 100000 ++ : |
> > 0 *+------------------------------------O-O------------------------*-+
> >
> >
> > aim7.jobs-per-min
> >
> > 140000 ++-----------------------------------------------------------------+
> > | *. .*.. .*.*.*.*.*.*.*..*.*.*.*.*.*. |
> > 120000 ++: *.*.* *.*.* *.*.*.*.*..*.*.*. *
> > | : * |
> > 100000 ++: : |
> > |: : |
> > 80000 O+O O O O O O O O O O O O O O O O O O : :|
> > |: : :|
> > 60000 ++ : :|
> > |: : :|
> > 40000 ++ : :|
> > | : :|
> > 20000 ++ : |
> > | : |
> > 0 *+------------------------------------O-O------------------------*-+
> >
> >
> >
> > [*] 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,
> > Xiaolong
> >
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