linux-kernel - Re: [PATCH v4] sched: automated per session task groups

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Date:	Sun, 28 Nov 2010 21:18:51 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Mike Galbraith <efault@....de>, Oleg Nesterov <oleg@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4] sched: automated per session task groups


* Linus Torvalds <torvalds@...ux-foundation.org> wrote:

> On Sun, Nov 28, 2010 at 6:24 AM, Mike Galbraith <efault@....de> wrote:
> >
> > Something else is seriously wrong though.  36.1 with attached (plus
> > sched, cgroup: Fixup broken cgroup movement) works a treat, whereas
> > 37.git and tip with fixlet below both suck rocks.  With a make -j40
> > running, wakeup-latency is showing latencies of >100ms, amarok skips,
> > mouse lurches badly.. generally horrid.  Something went south.
> 
> Can you test -rc3? Is that still ok? And are you perhaps using
> Nouveau? There's a report of some graphics (?) regression since -rc3
> about bad desktop performance:
> 
>    https://bugzilla.kernel.org/show_bug.cgi?id=23912
> 
> but it doesn't have any more information yet (so if -rc3 _is_ good for
> you, and you can add anything to that report, it would be good. The
> original reporter is hopefully bisecting it now)

Mike, the last pure -rc3 -tip commit is 92c883adf03b - you could try to check that 
out too: it has most of the current sched/core commits, but has none of the post-rc3 
DRM changes.

Thanks,

	Ingo
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