Messages in this thread |  | | | Date | Tue, 25 Mar 2008 13:38:44 -0700 | | From | "Ray Lee" <> | | Subject | Re: Poor performance now? Please, put weighted velocities ctxts/s to the sched.decision! |
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On Tue, Mar 25, 2008 at 1:29 PM, J.C. Pizarro <jcpiza@gmail.com> wrote: > [2] "Re: Serious performance regression in Wine applications and Linux 2.6.24.*" > http://lkml.org/lkml/2008/3/25/181 > On Tue, 25 Mar 2008 08:49:13 -0700, "Ray Lee" wrote: > > Andi's idea of looking for excessive context switches is good -- I > > didn't see a response to that one. Other than that, if you're only > > noticing the issue in 3d games, then it could be several things (not > > just the scheduler). > > The kernel needed the velocity parameter to gain it: ctxts per interval > (normally ctxts/s or ctxts/minute).
We don't know that's the problem yet. The reporter is doing more testing.
> "Please, put 64-bit counter per task and incr.by.one each ctxt switch." > http://lkml.org/lkml/2008/2/23/398 > http://lkml.org/lkml/2008/2/23/401 > http://lkml.org/lkml/2008/2/23/406 > http://lkml.org/lkml/2008/2/24/1 > http://lkml.org/lkml/2008/2/24/103 > http://lkml.org/lkml/2008/2/24/157 > http://lkml.org/lkml/2008/2/26/159
There are already counters recording the switches: http://lkml.org/lkml/2008/2/25/314
> My proposal is free for yours, quasi-bastards, I won't charge you!
My parents were married.
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