Messages in this thread | | | Subject | Re: [lkp-robot] [iversion] c0cef30e4f: aim7.jobs-per-min -18.0% regression | From | Jeff Layton <> | Date | Sun, 25 Feb 2018 10:41:11 -0500 |
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On Sun, 2018-02-25 at 23:05 +0800, kernel test robot wrote: > Greeting, > > FYI, we noticed a -18.0% regression of aim7.jobs-per-min due to commit: > > > commit: c0cef30e4ff0dc025f4a1660b8f0ba43ed58426e ("iversion: make inode_cmp_iversion{+raw} return bool instead of s64") > 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: 4BRD_12G > md: RAID0 > fs: xfs > test: disk_src > 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/ > >
I'm a bit suspicious of this result.
This patch only changes inode_cmp_iversion{+raw} (since renamed to inode_eq_iversion{+raw}), and that neither should ever be called from xfs. The patch is fairly trivial too, and I wouldn't expect a big performance hit.
Is IMA involved here at all? I didn't see any evidence of it, but the kernel config did have it enabled.
> > 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 > > ========================================================================================= > compiler/cpufreq_governor/disk/fs/kconfig/load/md/rootfs/tbox_group/test/testcase: > gcc-7/performance/4BRD_12G/xfs/x86_64-rhel-7.2/3000/RAID0/debian-x86_64-2016-08-31.cgz/lkp-ivb-ep01/disk_src/aim7 > > commit: > 3da90b159b (" f2fs-for-4.16-rc1") > c0cef30e4f ("iversion: make inode_cmp_iversion{+raw} return bool instead of s64") > > 3da90b159b146672 c0cef30e4ff0dc025f4a1660b8 > ---------------- -------------------------- > %stddev %change %stddev > \ | \ > 40183 -18.0% 32964 aim7.jobs-per-min > 448.60 +21.9% 546.68 aim7.time.elapsed_time > 448.60 +21.9% 546.68 aim7.time.elapsed_time.max > 5615 ± 5% +33.4% 7489 ± 4% aim7.time.involuntary_context_switches > 3086 +14.0% 3518 aim7.time.system_time > 19439782 -5.6% 18359474 aim7.time.voluntary_context_switches > 199333 +14.3% 227794 ± 2% interrupts.CAL:Function_call_interrupts > 0.59 -0.1 0.50 mpstat.cpu.usr% > 2839401 +16.0% 3293688 softirqs.SCHED > 7600068 +15.1% 8747820 softirqs.TIMER > 118.00 ± 43% +98.7% 234.50 ± 15% vmstat.io.bo > 87840 -22.4% 68154 vmstat.system.cs > 552798 ± 6% +15.8% 640107 ± 4% numa-numastat.node0.local_node > 557345 ± 6% +15.7% 644666 ± 4% numa-numastat.node0.numa_hit > 528341 ± 7% +21.7% 642933 ± 4% numa-numastat.node1.local_node > 531604 ± 7% +21.6% 646209 ± 4% numa-numastat.node1.numa_hit > 2.147e+09 -12.4% 1.88e+09 cpuidle.C1.time > 13702041 -14.7% 11683737 cpuidle.C1.usage > 2.082e+08 ± 4% +28.1% 2.667e+08 ± 5% cpuidle.C1E.time > 4.719e+08 ± 2% +23.1% 5.807e+08 ± 4% cpuidle.C3.time > 1.141e+10 +31.0% 1.496e+10 cpuidle.C6.time > 15672622 +27.8% 20031028 cpuidle.C6.usage > 13520572 ± 3% +29.5% 17514398 ± 9% cpuidle.POLL.time > 278.25 ± 5% -46.0% 150.25 ± 73% numa-vmstat.node0.nr_dirtied > 3200 ± 14% -20.6% 2542 ± 19% numa-vmstat.node0.nr_mapped > 277.75 ± 5% -46.2% 149.50 ± 73% numa-vmstat.node0.nr_written > 28.50 ± 52% +448.2% 156.25 ± 70% numa-vmstat.node1.nr_dirtied > 2577 ± 19% +26.3% 3255 ± 15% numa-vmstat.node1.nr_mapped > 634338 ± 4% +7.8% 683959 ± 4% numa-vmstat.node1.numa_hit > 457411 ± 6% +10.8% 506800 ± 5% numa-vmstat.node1.numa_local > 3734 ± 8% -11.5% 3306 ± 6% proc-vmstat.numa_hint_faults_local > 1114538 +18.3% 1318978 proc-vmstat.numa_hit > 1106722 +18.5% 1311136 proc-vmstat.numa_local > 22100 +7.5% 23753 ± 4% proc-vmstat.numa_pages_migrated > 1174556 +18.0% 1386359 proc-vmstat.pgalloc_normal > 1241445 +18.1% 1466086 proc-vmstat.pgfault > 1138310 +19.3% 1358132 proc-vmstat.pgfree > 22100 +7.5% 23753 ± 4% proc-vmstat.pgmigrate_success > 53332 ± 43% +143.0% 129617 ± 14% proc-vmstat.pgpgout > 1.42 ± 2% +1.7 3.07 perf-stat.branch-miss-rate% > 1.064e+10 +123.3% 2.375e+10 perf-stat.branch-misses > 10.79 +0.6 11.43 perf-stat.cache-miss-rate% > 5.583e+09 +5.9% 5.915e+09 perf-stat.cache-misses > 39652092 -5.0% 37662545 perf-stat.context-switches > 1.29 +11.7% 1.44 perf-stat.cpi > 4.637e+12 +12.8% 5.23e+12 perf-stat.cpu-cycles > 8.653e+11 +9.8% 9.498e+11 ± 2% perf-stat.dTLB-loads > 3.654e+11 +12.4% 4.109e+11 perf-stat.dTLB-stores > 0.78 -10.5% 0.70 perf-stat.ipc > 1214932 +17.9% 1432266 perf-stat.minor-faults > 1.334e+09 -1.8% 1.31e+09 perf-stat.node-store-misses > 1.651e+09 -1.8% 1.62e+09 perf-stat.node-stores > 1214954 +17.9% 1432313 perf-stat.page-faults > 256.75 -100.0% 0.00 turbostat.Avg_MHz > 21.39 -21.4 0.00 turbostat.Busy% > 1200 -100.0% 0.00 turbostat.Bzy_MHz > 13695007 -100.0% 0.00 turbostat.C1 > 11.92 -11.9 0.00 turbostat.C1% > 2116683 ± 2% -100.0% 0.00 turbostat.C1E > 1.16 ± 4% -1.2 0.00 turbostat.C1E% > 3112269 -100.0% 0.00 turbostat.C3 > 2.62 ± 2% -2.6 0.00 turbostat.C3% > 15671277 -100.0% 0.00 turbostat.C6 > 63.38 -63.4 0.00 turbostat.C6% > 49.46 -100.0% 0.00 turbostat.CPU%c1 > 1.42 ± 2% -100.0% 0.00 turbostat.CPU%c3 > 27.73 -100.0% 0.00 turbostat.CPU%c6 > 31.41 -100.0% 0.00 turbostat.CorWatt > 63.25 -100.0% 0.00 turbostat.CoreTmp > 18919351 -100.0% 0.00 turbostat.IRQ > 1.21 ± 18% -100.0% 0.00 turbostat.Pkg%pc2 > 0.67 ± 31% -100.0% 0.00 turbostat.Pkg%pc6 > 63.25 -100.0% 0.00 turbostat.PkgTmp > 57.63 -100.0% 0.00 turbostat.PkgWatt > 30.73 -100.0% 0.00 turbostat.RAMWatt > 36030 -100.0% 0.00 turbostat.SMI > 3000 -100.0% 0.00 turbostat.TSC_MHz > > > aim7.jobs-per-min > > 41000 +-+-----------------------------------------------------------------+ > | ..+....+.... ..+....+....+.... ..+....+....+...+.... | > 40000 +-+ +. +.. + | > 39000 +-+ | > | | > 38000 +-+ | > 37000 +-+ | > | | > 36000 +-+ | > 35000 +-+ | > | | > 34000 +-+ | > 33000 +-+ O O | > O O O O O O O O O O O O O > 32000 +-+-----------------------------------------------------------------+ > > > > [*] 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 -- Jeff Layton <jlayton@redhat.com>
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