Hi, On 03/17, Ye Xiaolong wrote: > On 03/15, Jaegeuk Kim wrote: > >On 03/14, Ye Xiaolong wrote: > >> On 03/14, Chao Yu wrote: > >> >On 2017/3/14 3:22, Jaegeuk Kim wrote: > >> >> On 03/13, Thorsten Leemhuis wrote: > >> >>> @Chao Yu/@Jaegeuk 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 > >> > > >> >Sorry for late repay. > >> > > >> >I expect below patches in Jaegeuk's tree could help to recover the performance > >> >as well > >> > > >> > f2fs: skip scanning free nid bitmap of full NAT blocks > >> > f2fs: combine nat_bits and free_nid_bitmap cache > >> > >> These 2 patches do help recover the performance back. Details as below. > >> > >> Tested-by: Xiaolong Ye > >> > >> commit: > >> 4ac912427c4214d8031d9ad6fbc3bc75e71512df ("f2fs: introduce free nid bitmap") > >> ced2c7ea8e99b46755a270872cd5ba61c27cffad <= parent commit of 4ac912427c > >> c0e39d642e41be12937f4532721fc2538182e264 ("f2fs: combine nat_bits and free_nid_bitmap cache") > > > >Thank you for testing them. > > > >BTW, I found one missing clear_bit_le conversion from c0e39d642e41b. > >I updated the original patch and uploaded it into f2fs.git. > > > > d00030cf9cd0bb9 ("f2fs: use __set{__clear}_bit_le") > > 1382c0f3f9d3f93 ("f2fs: combine nat_bits and free_nid_bitmap cache") > > > >Could you please test the above patches from f2fs.git one more time? > >I need to confirm there-in root-cause for next upstream. > > > > Here is the comparison results, each commit has been tested for 5 times. > > commit: > 4ac912427c4214d8031d9ad6fbc3bc75e71512df ("f2fs: introduce free nid bitmap") > d00030cf9cd0bb96fdccc41e33d3c91dcbb672ba ("f2fs: use __set{__clear}_bit_le") > 1382c0f3f9d3f936c8bc42ed1591cf7a593ef9f7 ("f2fs: combine nat_bits and free_nid_bitmap cache") Got it. I'll prepare upstream with them. Thank you so much. > > 4ac912427c4214d8 d00030cf9cd0bb96fdccc41e33 1382c0f3f9d3f936c8bc42ed15 > ---------------- -------------------------- -------------------------- > %stddev %change %stddev %change %stddev > \ | \ | \ > 77863 ± 0% +2.1% 79485 ± 1% +50.8% 117404 ± 0% aim7.jobs-per-min > 231.63 ± 0% -2.0% 227.01 ± 1% -33.6% 153.80 ± 0% aim7.time.elapsed_time > 231.63 ± 0% -2.0% 227.01 ± 1% -33.6% 153.80 ± 0% aim7.time.elapsed_time.max > 896604 ± 0% -0.8% 889221 ± 3% -20.2% 715260 ± 1% aim7.time.involuntary_context_switches > 2394 ± 1% +4.6% 2503 ± 1% +3.7% 2481 ± 2% aim7.time.maximum_resident_set_size > 6240 ± 0% -1.5% 6145 ± 1% -14.1% 5360 ± 1% aim7.time.system_time > 1111357 ± 3% +1.9% 1132509 ± 2% -6.2% 1041932 ± 2% aim7.time.voluntary_context_switches > 5600256 ± 9% -4.7% 5339136 ± 8% -9.4% 5074534 ± 0% meminfo.DirectMap2M > 78738 ± 8% +10.0% 86602 ± 8% +25.0% 98448 ± 2% meminfo.Dirty > 20625 ± 0% +18.3% 24403 ± 11% +11.4% 22985 ± 6% meminfo.Mapped > 393582 ± 85% -84.9% 59547 ± 2% -86.1% 54561 ± 9% meminfo.Shmem > 1328 ± 18% +786.4% 11771 ± 18% +440.6% 7179 ± 26% softirqs.NET_RX > 669152 ± 3% -0.7% 664708 ± 2% -11.9% 589420 ± 2% softirqs.RCU > 170724 ± 0% +0.1% 170929 ± 7% -19.8% 136921 ± 7% softirqs.SCHED > 2688290 ± 0% -1.6% 2646510 ± 1% -13.8% 2317797 ± 1% softirqs.TIMER > 4948 ± 3% +5.9% 5240 ± 1% +55.6% 7700 ± 0% vmstat.io.bo > 39.00 ± 2% -69.2% 12.00 ± 15% -67.2% 12.80 ± 15% vmstat.procs.b > 171.50 ± 2% +17.6% 201.75 ± 12% +41.0% 241.80 ± 9% vmstat.procs.r > 13425 ± 1% +24.4% 16706 ± 9% +41.3% 18974 ± 9% vmstat.system.cs > 45100 ± 1% +1.4% 45733 ± 0% +6.8% 48162 ± 0% vmstat.system.in > 231.63 ± 0% -2.0% 227.01 ± 1% -33.6% 153.80 ± 0% time.elapsed_time > 231.63 ± 0% -2.0% 227.01 ± 1% -33.6% 153.80 ± 0% time.elapsed_time.max > 896604 ± 0% -0.8% 889221 ± 3% -20.2% 715260 ± 1% time.involuntary_context_switches > 2701 ± 0% +0.5% 2713 ± 0% +29.3% 3492 ± 0% time.percent_of_cpu_this_job_got > 6240 ± 0% -1.5% 6145 ± 1% -14.1% 5360 ± 1% time.system_time > 16.66 ± 0% -4.2% 15.96 ± 7% -26.0% 12.34 ± 5% time.user_time > > Thanks, > Xiaolong > > >Thanks, > > > >> > >> 4ac912427c4214d8 ced2c7ea8e99b46755a270872c c0e39d642e41be12937f453272 > >> ---------------- -------------------------- -------------------------- > >> %stddev %change %stddev %change %stddev > >> \ | \ | \ > >> 77863 ± 0% +50.8% 117419 ± 1% +50.9% 117500 ± 0% aim7.jobs-per-min > >> 231.63 ± 0% -33.6% 153.78 ± 1% -33.7% 153.67 ± 0% aim7.time.elapsed_time > >> 231.63 ± 0% -33.6% 153.78 ± 1% -33.7% 153.67 ± 0% aim7.time.elapsed_time.max > >> 896604 ± 0% -10.1% 805644 ± 3% -20.8% 710207 ± 1% aim7.time.involuntary_context_switches > >> 6240 ± 0% -13.3% 5408 ± 1% -14.2% 5353 ± 1% aim7.time.system_time > >> 1111357 ± 3% -1.3% 1097209 ± 2% -7.8% 1024716 ± 0% aim7.time.voluntary_context_switches > >> 5600256 ± 9% -9.5% 5066069 ± 0% -9.3% 5078220 ± 13% meminfo.DirectMap2M > >> 78738 ± 8% +72.1% 135538 ± 8% +23.2% 96995 ± 6% meminfo.Dirty > >> 315.50 ± 12% +210.8% 980.67 ± 16% +123.9% 706.40 ± 22% meminfo.Writeback > >> 1328 ± 18% +357.1% 6069 ± 57% +231.1% 4397 ± 75% softirqs.NET_RX > >> 669152 ± 3% -7.4% 619333 ± 4% -14.4% 572896 ± 1% softirqs.RCU > >> 170724 ± 0% -25.0% 128030 ± 2% -23.0% 131531 ± 4% softirqs.SCHED > >> 2688290 ± 0% -13.3% 2331994 ± 1% -14.7% 2292443 ± 1% softirqs.TIMER > >> 4948 ± 3% +55.6% 7701 ± 1% +55.8% 7710 ± 0% vmstat.io.bo > >> 39.00 ± 2% +65.8% 64.67 ± 2% -52.8% 18.40 ± 30% vmstat.procs.b > >> 171.50 ± 2% +94.4% 333.33 ± 7% +29.7% 222.40 ± 7% vmstat.procs.r > >> 13425 ± 1% +30.6% 17530 ± 1% +43.9% 19321 ± 10% vmstat.system.cs > >> 45100 ± 1% +5.6% 47642 ± 1% +6.3% 47957 ± 0% vmstat.system.in > >> 19068 ± 0% +75.8% 33522 ± 4% +24.5% 23745 ± 5% proc-vmstat.nr_dirty > >> 80.00 ± 3% +195.0% 236.00 ± 14% +126.0% 180.80 ± 23% proc-vmstat.nr_writeback > >> 19222 ± 0% +76.4% 33907 ± 4% +24.9% 24004 ± 5% proc-vmstat.nr_zone_write_pending > >> > >> Thanks, > >> Xiaolong > >> > > >> >Xiaolong, Thorsten > >> > > >> >Could you help to test these patches? > >> > > >> >Thanks, > >> > > >> >> > >> >> 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 > >> >>>> > >> >> > >> >> . > >> >> > >> >