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From: Frans Pop on 7 May 2008 04:30
On Friday 02 May 2008, Peter Zijlstra wrote:
> > Under kernel compilation load (make -j8) audio is very much unusable
> > on current linux-2.6.git - The stutter is so bad I can hardly tell
> > what song I am listening to :)
> > Even with make -j4 it still skips but not that badly.

What's the current status here?
With mainline v2.6.26-rc1-110-ga153063 (which has latest sched patches), I
still get very bad audio skips with GROUP_SCHED enabled.

Cheers,
FJP
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From: Ingo Molnar on 7 May 2008 04:40

* Frans Pop <elendil(a)planet.nl> wrote:

> On Friday 02 May 2008, Peter Zijlstra wrote:
> > > Under kernel compilation load (make -j8) audio is very much unusable
> > > on current linux-2.6.git - The stutter is so bad I can hardly tell
> > > what song I am listening to :)
> > > Even with make -j4 it still skips but not that badly.
>
> What's the current status here?
> With mainline v2.6.26-rc1-110-ga153063 (which has latest sched
> patches), I still get very bad audio skips with GROUP_SCHED enabled.

there's no solution for now, the latency targets are still not working
under the group scheduler. Upstream we've made it non-default and marked
it EXPERIMENTAL.

Peter has a new updated group scheduler queue that i'm testing right
now, perhaps it can be pushed out to sched-devel/latest later today. But
that is v2.6.27 material.

Ingo
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