FYI, we noticed the below changes on git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master commit c9dc4c6578502c2085705347375b82089aad18d0 ("Btrfs: two stage dirty block group writeout") testcase/path_params/tbox_group: fsmark/performance-1x-1t-1HDD-btrfs-4M-60G-NoSync/ivb44 4c6d1d85ad89fd8e c9dc4c6578502c208570534737 ---------------- -------------------------- 462211 ± 1% +16.8% 539707 ± 0% fsmark.app_overhead 35.27 ± 0% +9.8% 38.74 ± 1% fsmark.files_per_sec 9 ± 0% +17.8% 10 ± 4% fsmark.time.percent_of_cpu_this_job_got 9864 ± 2% +156.9% 25345 ± 4% fsmark.time.voluntary_context_switches 435 ± 0% -9.0% 396 ± 1% fsmark.time.elapsed_time 435 ± 0% -9.0% 396 ± 1% fsmark.time.elapsed_time.max 21057 ± 0% -9.0% 19165 ± 1% uptime.idle 68983 ± 2% +19.1% 82190 ± 4% softirqs.RCU 129619 ± 0% +3.2% 133743 ± 0% vmstat.io.bo 1 ± 0% +100.0% 2 ± 0% vmstat.procs.b 18873 ± 0% +14.9% 21692 ± 1% vmstat.system.cs 1787510 ± 1% +117.0% 3878984 ± 2% meminfo.Dirty 5585235 ± 0% +25.5% 7011242 ± 0% meminfo.Writeback 8276795 ± 10% +15.9% 9592682 ± 0% numa-numastat.node0.local_node 8287205 ± 10% +16.0% 9611684 ± 0% numa-numastat.node0.numa_hit 2447873 ± 42% -67.9% 785086 ± 33% numa-numastat.node1.numa_hit 2413662 ± 43% -68.1% 771115 ± 31% numa-numastat.node1.local_node 435 ± 0% -9.0% 396 ± 1% time.elapsed_time 435 ± 0% -9.0% 396 ± 1% time.elapsed_time.max 9 ± 0% +17.8% 10 ± 4% time.percent_of_cpu_this_job_got 0.41 ± 1% +17.1% 0.48 ± 4% time.user_time 9864 ± 2% +156.9% 25345 ± 4% time.voluntary_context_switches 5.189e+08 ± 0% +72.6% 8.956e+08 ± 1% cpuidle.C1-IVT.time 4626942 ± 19% +49.6% 6924087 ± 22% cpuidle.C1E-IVT.time 2646692 ± 7% +75.0% 4630890 ± 23% cpuidle.C3-IVT.time 2.028e+10 ± 0% -11.1% 1.803e+10 ± 1% cpuidle.C6-IVT.time 268137 ± 0% +12.2% 300911 ± 2% cpuidle.C6-IVT.usage 222 ± 11% +47.0% 326 ± 25% cpuidle.POLL.usage 0.69 ± 2% +7.2% 0.74 ± 3% turbostat.%Busy 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