Re: [PATCHSET 0/6] perf sched timehist: Introduce --idle-hist option (v2)

David Ahern
2016-12-12T17:37:40Z

On 12/12/16 10:26 AM, Namhyung Kim wrote:
> Do you mean adding an elapsed time so that it can see the cpu utilization (or
> something similar)? Then we need to expose the elapsed time during record or
> maybe just use time difference between first and last sample?

I was thinking tstart = time of first sample analyzed, tend = time of last sample analyzed, dt = tend - tstart.

If the analysis window (dt) is 5 seconds and each cpu is idle for 0.1 seconds of that 5 second window then the system is under high load.