Greeting, There is no primary kpi change in this test, below is the data collected through multiple monitors running background just for your information. commit: 4612741fb9c9814efc0feaf7c6bcc3475b5c2b5a ("fs: track whether the i_version has been queried with an i_state flag") git://git.samba.org/jlayton/linux iversion in testcase: vm-scalability on test machine: 48 threads Intel(R) Xeon(R) CPU E5-2697 v2 @ 2.70GHz with 64G memory with following parameters: runtime: 300s size: 1T test: msync-mt cpufreq_governor: performance test-description: The motivation behind this suite is to exercise functions and regions of the mm/ of the Linux kernel which are of interest to us. test-url: https://git.kernel.org/cgit/linux/kernel/git/wfg/vm-scalability.git/ 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: vm-scalability/300s-1T-msync-mt-performance/ivb43 20e9b896c1909981 4612741fb9c9814efc0feaf7c6 ---------------- -------------------------- %stddev change %stddev \ | \ 4.163e+08 20% 4.978e+08 vm-scalability.time.minor_page_faults 1425 ± 3% 9% 1556 vm-scalability.time.user_time 2.346e+08 4% 2.429e+08 vm-scalability.time.voluntary_context_switches 484051 4% 501356 vmstat.system.cs 7709995 ± 47% -8e+06 12940 ± 36% latency_stats.sum.call_rwsem_down_write_failed.xfs_ilock.xfs_vn_update_time.file_update_time.xfs_filemap_page_mkwrite.do_page_mkwrite.do_wp_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 7963680 ± 48% -8e+06 187867 ± 27% latency_stats.sum.call_rwsem_down_write_failed.xfs_ilock.xfs_file_iomap_begin_delay.xfs_file_iomap_begin.iomap_apply.iomap_page_mkwrite.xfs_filemap_page_mkwrite.do_page_mkwrite.do_wp_page.handle_mm_fault.__do_page_fault.do_page_fault 8.18 ± 3% 13% 9.24 perf-stat.cache-miss-rate% 95305755 7% 1.021e+08 perf-stat.cpu-migrations 3.32e+09 6% 3.507e+09 perf-stat.iTLB-loads 0.48 -3% 0.46 perf-stat.ipc 4.469e+08 3% 4.624e+08 perf-stat.context-switches 4.158e+08 20% 4.972e+08 perf-stat.minor-faults 4.158e+08 20% 4.972e+08 perf-stat.page-faults 4.277e+12 -5% 4.061e+12 perf-stat.dTLB-loads 1.868e+10 -6% 1.751e+10 perf-stat.branch-misses 1.442e+12 -5% 1.367e+12 perf-stat.dTLB-stores 1.823e+11 -14% 1.568e+11 perf-stat.cache-references 6.405e+09 -6% 5.997e+09 ± 3% perf-stat.node-loads 4.691e+09 ± 3% -10% 4.244e+09 ± 4% perf-stat.node-load-misses perf-stat.page-faults 6e+08 ++------------------------------------------------------------------+ | | 5e+08 O+O O O O O OO O O O O O O O O O O O O OO O | | O O O O O O | *.*.*.*.* *.*.**.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.**.*.*.*.*.*.*.*.* 4e+08 ++ : : | | : : | 3e+08 ++ : : | | : : | 2e+08 ++ : : | | : : | | : : | 1e+08 ++ : | | : | 0 ++--------*---------------------------------------------------------+ vm-scalability.time.minor_page_faults 6e+08 ++------------------------------------------------------------------+ | | 5e+08 O+O O O O O OO O O O O O O O O O O O O OO O | | O O O O O O | *.*.*.*.* *.*.**.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.**.*.*.*.*.*.*.*.* 4e+08 ++ : : | | : : | 3e+08 ++ : : | | : : | 2e+08 ++ : : | | : : | | : : | 1e+08 ++ : | | : | 0 ++--------*---------------------------------------------------------+ [*] 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, Ying Huang