On Fri, Nov 29, 2019 at 01:19:33PM +0800, 王贇 <yun.wang@xxxxxxxxxxxxxxxxx> wrote: > I did some research regarding cpuacct, and find cpuacct_charge() is a good > place to do hierarchical update, however, what we get there is the execution > time delta since last update_curr(). I wouldn't extend cpuacct, I'd like to look into using the rstat mechanism for per-CPU runtime collection. (Most certainly I won't get down to this until mid December though.) > I'm afraid we can't just do local/remote accumulation since the sample period > now is changing, still have to accumulate the execution time into locality > regions. My idea was to decouple time from the locality counters completely. It'd be up to the monitoring application to normalize differences wrt sampling rate (and handle wrap arounds). Michal
Attachment:
signature.asc
Description: Digital signature
