Messages in this thread | | | Subject | Re: [PATCH 0/4] delayacct: save max CPU/IO/SWAP/RECLAIM delays | From | Peter Zijlstra <> | Date | Tue, 29 Nov 2011 10:23:32 +0100 |
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On Mon, 2011-11-28 at 17:44 -0500, Satoru Moriya wrote: > In the latency sensitive systems, we usually focus on the worst latency. > And so, it is useful to save max delays into the per-task delay > accounting functionality. > > Example output: > (on 100 concurrent dd reading sparse files w/ 1 dd writing a file) > > CPU count real total virtual total delay total delay_max delay average > 222 45993008 74603882 7637295 3691858 0.034ms > IO count delay total delay max delay average > 2 21812073 12728672 10ms > SWAP count delay total delay max delay average > 0 0 0 0ms > RECLAIM count delay total delay_max delay average > 2 348488 211985 0ms > > Any comments are welcome.
No!!!
Linus told us to be bastards, so there you have it.
There's way too many different accounting crap thingies around. And now I get a patch without any justification what so ever. So no, piss off.
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