Greeting, FYI, we noticed a -8% regression of aim7.jobs-per-min due to commit: commit: eea944687acd9061a1e75e3dbe6823dfd2c4034b ("f2fs: drop exist_data for inline_data when truncated to 0") https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.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: creat-clo load: 1500 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-creat-clo-1500-performance/lkp-ivb-ep01 fb7d218589a77a55 eea944687acd9061a1e75e3dbe ---------------- -------------------------- %stddev change %stddev \ | \ 68975 ± 3% -8% 63748 aim7.jobs-per-min 225590 ± 4% 116% 488016 ± 6% aim7.time.involuntary_context_switches 4549 ± 3% 13% 5122 aim7.time.system_time 130 ± 3% 8% 141 aim7.time.elapsed_time 130 ± 3% 8% 141 aim7.time.elapsed_time.max 686619 ± 13% -36% 441007 ± 5% aim7.time.voluntary_context_switches 2610 7% 2780 turbostat.Avg_MHz 127 5% 133 turbostat.CorWatt 154 4% 161 turbostat.PkgWatt 87.32 4% 91.04 turbostat.%Busy 6237 ± 70% -6e+03 289 ±120% latency_stats.avg.build_free_nids.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_setattr.[f2fs].notify_change.do_truncate.path_openat.do_filp_open.do_sys_open.SyS_creat.entry_SYSCALL_64_fastpath 22719 ± 64% -2e+04 452 ±110% latency_stats.max.build_free_nids.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_setattr.[f2fs].notify_change.do_truncate.path_openat.do_filp_open.do_sys_open.SyS_creat.entry_SYSCALL_64_fastpath 246491 ± 71% -2e+05 36668 ±166% latency_stats.sum.build_free_nids.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_setattr.[f2fs].notify_change.do_truncate.path_openat.do_filp_open.do_sys_open.SyS_creat.entry_SYSCALL_64_fastpath 1.045e+08 ± 9% -8e+07 26256181 ± 15% latency_stats.sum.call_rwsem_down_write_failed.path_openat.do_filp_open.do_sys_open.SyS_creat.do_syscall_64.return_from_SYSCALL_64 0.19 ± 3% 26% 0.24 perf-stat.branch-miss-rate% 1.375e+13 ± 3% 15% 1.575e+13 perf-stat.cpu-cycles 1.187e+09 ± 3% 8% 1.284e+09 perf-stat.node-store-misses 2.348e+09 ± 3% 7% 2.517e+09 perf-stat.branch-misses 516928 ± 7% 7% 553150 perf-stat.minor-faults 516930 ± 7% 7% 553090 perf-stat.page-faults 3.131e+11 4% 3.254e+11 perf-stat.dTLB-stores 42.60 3% 43.92 perf-stat.node-store-miss-rate% 45.70 44.95 perf-stat.node-load-miss-rate% 26.01 -5% 24.70 perf-stat.cache-miss-rate% 1.213e+12 ± 3% -15% 1.029e+12 perf-stat.branch-instructions 5.911e+12 ± 3% -21% 4.66e+12 perf-stat.instructions 1.589e+12 ± 3% -22% 1.236e+12 perf-stat.dTLB-loads 182459 ± 6% -28% 130643 ± 12% perf-stat.instructions-per-iTLB-miss 0.43 -31% 0.30 ± 3% perf-stat.ipc perf-stat.cpu-cycles 1.65e+13 ++---------------------------------------------------------------+ | | 1.6e+13 O+ O O O O O O 1.55e+13 ++ O O O O O O O O O O O O O O O O O O O O | | | 1.5e+13 ++ | | | 1.45e+13 ++ .* | | .*. *. : *..*. .*. *.. | 1.4e+13 ++ *.* *. * : : : *. *..* *.* : *.*..* | 1.35e+13 ++: : : + : : : : + : : :| | : : : + : : : : + : : :| 1.3e+13 ++ : : * *..* * :: * * * * | 1.25e+13 ++---------------------------------------------------------------+ perf-stat.node-store-miss-rate_ 44.4 ++-----------------O-------------------------------------------------+ 44.2 O+ O O | | O O O O 44 ++ O O O O O O O O O O O O O O | 43.8 ++ O O O O O | | | 43.6 ++ | 43.4 ++ | 43.2 ++ | | *. | 43 ++ .*.*.. .. *.. | 42.8 ++ .*.. *..*. * *.. .* | *..* + .*.. .*.. *..*. + .*..| 42.6 ++ *..* * * *.. + *..*..* * 42.4 ++----------------------------------------------*--------------------+ perf-stat.ipc 0.44 ++-----------*--*----------------------------*-----------------------+ | .*.*..*..* .*..*.. *..*.*..*.*. *.*..*..*.*..*..*.*..* 0.42 *+ * *. .. | 0.4 ++ * | | | 0.38 ++ | | | 0.36 ++ | | | 0.34 ++ | 0.32 ++ | | O O O O O O O O | 0.3 ++ O O O O O | | O O O O O O O O O O O O 0.28 O+--------------------------------------------------------O----------+ aim7.jobs-per-min 74000 *+---------------------------*--------------------------------------+ |: * * *. : * * * 72000 ++ : :: : : :: : | | : : : : : : : : : : : :| | : : : : : : : : : : : :| 70000 ++ : : : : : : : : : : : : | | * : : : : : : : : : : : | 68000 ++ +: *..*..* *..* *.. : *.* : .*.: | | * *..*.*..*.* :.*. * | 66000 ++ * | | | | O O O O | 64000 ++ O O O O O O O O O O O O O O O O O | O O O O O O 62000 ++------------------------------------------------------------------+ aim7.time.system_time 5300 ++-------------------------------------------------------------------+ 5200 O+ O O | | O O O O O O O O O O O O O O O O O 5100 ++ O O O O O O O | 5000 ++ | 4900 ++ | 4800 ++ | | *..* *.. | 4700 ++ * .*..* : : : *.*..*.*..* *.. .*.* | 4600 ++ + : * : : : : : *..* : *. : | 4500 ++ * : : : : : : : : : : : | 4400 +++ : : :: : : : : : : :| |+ : : * *.* : : :: :| 4300 *+ * * * * 4200 ++-------------------------------------------------------------------+ aim7.time.elapsed_time 145 ++--------------------------------------------------------------------+ O O O O O O | O O O O O O O O O O O O O O O O O | 140 ++ O O O O | | | | *.. | 135 ++ * .*..*.*..*..* : *.. .* | | + : *.*..* *.* *. : *..* : * : | 130 ++ * : : : : : : : : : : : | | : : : : : : : : : : : :| | : : : : : : : : : : : :| 125 ++ :: : : : : :: :: | |: * * *..: * * * * * | 120 ++--------------------------------------------------------------------+ aim7.time.elapsed_time.max 145 ++--------------------------------------------------------------------+ O O O O O O | O O O O O O O O O O O O O O O O O | 140 ++ O O O O | | | | *.. | 135 ++ * .*..*.*..*..* : *.. .* | | + : *.*..* *.* *. : *..* : * : | 130 ++ * : : : : : : : : : : : | | : : : : : : : : : : : :| | : : : : : : : : : : : :| 125 ++ :: : : : : :: :: | |: * * *..: * * * * * | 120 ++--------------------------------------------------------------------+ aim7.time.involuntary_context_switches 600000 ++-----------------------------------------------------------------+ O | 550000 ++ O | 500000 ++ O O O O O O O O O | O O O O | 450000 ++ O O O O O O O O O O | 400000 ++ O O | | | 350000 ++ | 300000 ++ | | *.. *. .*.. | 250000 ++ + .*.*.. .. *..* *..*. .*. .*. .*.. .*. .*. | 200000 *+.* *.*. * *. *. *. *.*. *. *..* | | 150000 ++-----------------------------------------------------------------+ [*] 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