linux-kernel - Re: [PATCH 0/2] fix the itimer regression (BZ 12618)

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Message-ID: <20090211125931.GL16535@elte.hu>
Date:	Wed, 11 Feb 2009 13:59:31 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Lin Ming <lin@...ggr.cn>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>, tglx@...utronix.de,
	oleg@...hat.com, linux-kernel@...r.kernel.org,
	yanmin_zhang@...ux.intel.com, seto.hidetoshi@...fujitsu.com
Subject: Re: [PATCH 0/2] fix the itimer regression (BZ 12618)


* Lin Ming <lin@...ggr.cn> wrote:

> On Thu, Feb 5, 2009 at 8:06 PM, Ingo Molnar <mingo@...e.hu> wrote:
> >
> > * Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:
> >
> >> This should hopefully address all the itimer borkage.
> >
> > Applied to tip:timers/urgent, thanks Peter!
> >
> > Yanmin: could you check hacbench_pth with latest tip/master, do
> > these fixes resolve that 3% regression you reported?
> 
> hacbench_pth still has regression with 2.6.29-rc4.
> Below 2 patches that fixed the regression are not merged into 2.6.29-rc4.
> 
> commit 32bd671d6cbeda60dc73be77fa2b9037d9a9bfa0
> Author: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> Date:   Thu Feb 5 12:24:15 2009 +0100
> 
>     signal: re-add dead task accumulation stats.
> 
> commit 4cd4c1b40d40447fb5e7ba80746c6d7ba91d7a53
> Author: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> Date:   Thu Feb 5 12:24:16 2009 +0100
> 
>     timers: split process wide cpu clocks/timers

they are queued up but not fully baken yet. Maybe in -rc5.

	Ingo
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