Hi Kees, On 11/10/2021 1:21 AM, Kees Cook wrote: >> 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? I moved the syscall implementation to a stand alone file and put the file to net directory for testing. The new patch is like: https://zerobin.net/?a2b782afadf3c428#Me8l4AJuhiSCfaLVWVzydAVIK6ves0EVIVD76wLnVQo= The test result is like following: - on Cascade Lake: -10.4% 356365 -10.4% 319180 netperf.Throughput_total_tps 22272 -10.4% 19948 netperf.Throughput_tps - on Cooper Lake: -4.0% 345772 ± 4% -4.0% 331814 netperf.Throughput_total_tps 21610 ± 4% -4.0% 20738 netperf.Throughput_tps - on Ice Lake: -1.1% 509824 -1.1% 504434 netperf.Throughput_total_tps 31864 -1.1% 31527 netperf.Throughput_tps Regards Yin, Fengwei
