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: 4a057549d6044c2dea47e80f8369a76225ec9d90 ("alarmtimer: Add tracepoints for alarm timers") https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master in testcase: netperf on test machine: 8 threads Intel(R) Atom(TM) CPU C2750 @ 2.40GHz with 16G memory with following parameters: ip: ipv4 runtime: 300s nr_threads: 200% cluster: cs-localhost test: TCP_SENDFILE cpufreq_governor: performance test-description: Netperf is a benchmark that can be use to measure various aspect of networking performance. test-url: http://www.netperf.org/netperf/ 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: netperf/ipv4-300s-200%-cs-localhost-TCP_SENDFILE-performance/lkp-avoton3 2924ecd441f3c12d 4a057549d6044c2dea47e80f83 ---------------- -------------------------- %stddev change %stddev \ | \ 0.44 40% 0.62 perf-stat.iTLB-load-miss-rate% 1.169e+10 39% 1.63e+10 perf-stat.iTLB-load-misses 2.36 3% 2.43 perf-stat.branch-miss-rate% 1.11e+10 1.137e+10 perf-stat.branch-misses 3.00 3.06 perf-stat.cache-miss-rate% 2.292e+11 2.263e+11 perf-stat.cache-references 224 -29% 159 perf-stat.instructions-per-iTLB-miss perf-stat.instructions-per-iTLB-miss 250 ++--------------------------------------------------------------------+ 240 *******.*************.************ | | : | 230 ++ : | 220 ++ : ********.*************.******* | : * : | 210 ++ *.*** * | 200 ++ OOOOOOOOOO OO | 190 ++ OO OO | | O OOOOOOO OO | 180 ++ OO | 170 ++ | OOOOO | 160 ++ OOOOOOOOOO | 150 ++--------------------------------------------------------------------+ [*] 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