[lkml]   [2019]   [Nov]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH v2 1/3] sched/numa: advanced per-cgroup numa statistic
On Fri, Nov 29, 2019 at 01:19:33PM +0800, 王贇 <> 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).

[unhandled content-type:application/pgp-signature]
 \ /
  Last update: 2019-11-29 11:07    [W:0.082 / U:1.708 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site