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

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Message-ID: <AANLkTin5Z_WdAPDfcS3V3DCcN40HLDfpzK-o0XeSMiQh@mail.gmail.com>
Date:	Sun, 28 Nov 2010 11:31:41 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Mike Galbraith <efault@....de>
Cc:	Ingo Molnar <mingo@...e.hu>, 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

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)

                     Linus
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