linux-kernel - Re: [git] CFS-devel, group scheduler, fixes

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Message-Id: <1190630535.7406.2.camel@Homer.simpson.net>
Date:	Mon, 24 Sep 2007 12:42:15 +0200
From:	Mike Galbraith <efault@....de>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Tong Li <tong.n.li@...el.com>, Ingo Molnar <mingo@...e.hu>,
	dimm <dmitry.adamushko@...il.com>, linux-kernel@...r.kernel.org,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>
Subject: Re: [git] CFS-devel, group scheduler, fixes

On Mon, 2007-09-24 at 12:24 +0200, Peter Zijlstra wrote:

> how about something like:
> 
>  s64 delta = (s64)(vruntime - min_vruntime);
>  if (delta > 0)
>   min_vruntime += delta;
> 
> That would rid us of most of the funny conditionals there.

That still left me with negative min_vruntimes.  The pinned hogs didn't
lock my box up, but I quickly got the below, so hastily killed it.

se.wait_max              :             7.846949
se.wait_max              :           301.951601
se.wait_max              :             7.071359

	-Mike

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