Hi everyone, My system during idle sometimes has high sysload in 2,3 seconds (around 70% sysload) and then come back to normal after that. I see it happen in some conditions and try to use top commands to debug and see one of processes in my system consume CPU. I would like to investigate more what code causes CPU high. However the spike only happens 2,3 seconds so I have no ideas to continue debugging. I thought about perf tool, but I am not sure how to profile with perf to identify exactly what happens in 2,3 seconds during high CPU. Because I can reproduce the issue to see it, but only during 3 or 4 minutes, I can see CPU increase in 2,3 seconds. So I worry that using perf to profile in 3,4 minutes cannot identify the code causing CPU increase in a short time. Could you help to advise how I can debug in this case? Thanks, Brs, Naruto _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
