> 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