linux-kernel - Re: [REPORT] cfs-v4 vs sd-0.44

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Message-ID: <20070424072520.GA28387@elte.hu>
Date:	Tue, 24 Apr 2007 09:25:20 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Gene Heskett <gene.heskett@...il.com>
Cc:	Peter Williams <pwil3058@...pond.net.au>,
	Arjan van de Ven <arjan@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Nick Piggin <npiggin@...e.de>,
	Juliusz Chroboczek <jch@....jussieu.fr>,
	Con Kolivas <kernel@...ivas.org>, ck list <ck@....kolivas.org>,
	Bill Davidsen <davidsen@....com>, Willy Tarreau <w@....eu>,
	William Lee Irwin III <wli@...omorphy.com>,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mike Galbraith <efault@....de>,
	Thomas Gleixner <tglx@...utronix.de>, caglar@...dus.org.tr
Subject: Re: [REPORT] cfs-v4 vs sd-0.44


* Ingo Molnar <mingo@...e.hu> wrote:

> yeah, i guess this has little to do with X. I think in your scenario 
> it might have been smarter to either stop, or to renice the workloads 
> that took away CPU power from others to _positive_ nice levels. 
> Negative nice levels can indeed be dangerous.

btw., was X itself at nice 0 or nice -10 when the lockup happened?

	Ingo
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