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: a966ff5e8eb57208523f0eacb8ab46008688b1b2 ("x86/mm: Factor out remote TLB flushing") https://git.kernel.org/cgit/linux/kernel/git/luto/linux.git x86/pcid in testcase: pixz on test machine: 80 threads Intel(R) Xeon(R) CPU E7- 8870 @ 2.40GHz with 128G memory with following parameters: nr_threads: 100% cpufreq_governor: performance 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: pixz/100%-performance/lkp-wsx02 b760342527f665dc a966ff5e8eb57208523f0eacb8 ---------------- -------------------------- %stddev change %stddev \ | \ 1.893e+09 ± 3% 136% 4.466e+09 perf-stat.dTLB-store-misses 0.11 ± 3% 135% 0.26 perf-stat.dTLB-store-miss-rate% 4.303e+08 26% 5.427e+08 perf-stat.iTLB-load-misses 0.00 26% 0.00 perf-stat.iTLB-load-miss-rate% 2.223e+10 11% 2.476e+10 perf-stat.dTLB-load-misses 0.52 11% 0.57 perf-stat.dTLB-load-miss-rate% 33341 -20% 26518 perf-stat.instructions-per-iTLB-miss 201596 ±171% 1e+06 1396125 ±163% latency_stats.avg.max 213975 ±157% 1e+06 1404448 ±162% latency_stats.max.max perf-stat.dTLB-store-misses 6e+09 ++------------------------------------------------------------------+ | | 5e+09 ++ O O O | O O O O O O O O O O O O O O O O O O | | O O O O O | 4e+09 ++ | | | 3e+09 ++ | | *.*.. *..* | 2e+09 *+ .*. .*.*..* : + + .*..*.| | *..*.* *..*.* : *.* : *.*.* *.*.* *.* * | : : : : : : | 1e+09 ++ : : : : : : | | :: :: : : | 0 ++-----------------------*-O----*------------------------*----------+ perf-stat.dTLB-store-miss-rate_ 0.3 ++------------O-----------------O------------------------------------+ O O O O O O O O O O O O | 0.25 ++O O O O O O O O O O O O | | | | | 0.2 ++ | | | 0.15 ++ | | .*.. .*.. | 0.1 *+*..*.* *.*.* *.* *.* *.*.*.*..*.*.*..*.*.* *.*.*..*.* | : : : : : : | | : : : : : : | 0.05 ++ : : : : : : | | :: :: :: | 0 ++-----------------------*--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