On 11/10/2021 4:52 PM, Mickaël Salaün wrote: >>> ---------------- --------------------------- >>> %stddev %change %stddev >>> \ | \ >>> 555600 -0.1% 555305 netperf.Throughput_total_tps >>> 34725 -0.1% 34706 netperf.Throughput_tps >>> >>> >>> Fengwei also helped review these results and commented: >>> I suppose these three CPUs have different cache policy. It also could be >>> related with netperf throughput testing. >> Does moving the syscall implementation somewhere else change things? >> That's a _huge_ performance change for something that isn't even called. >> What's going on here? > This regression doesn't make sense. I guess this is the result of a > flaky netperf test, maybe because the test machine was overloaded at > that time. I agree the test result looks strange. But I don't think the test machine or test methodology has issue. It's not possible the test box is overloaded when test case is running. We did test several times (> 12 times) on different days. Thanks. Regards Yin, Fengwei
