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Date: Tue, 24 Apr 2007 09:25:20 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Gene Heskett <gene.heskett@gmail.com>
Cc: Peter Williams <pwil3058@bigpond.net.au>,
       Arjan van de Ven <arjan@infradead.org>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Nick Piggin <npiggin@suse.de>, Juliusz Chroboczek <jch@pps.jussieu.fr>,
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       Bill Davidsen <davidsen@tmr.com>, Willy Tarreau <w@1wt.eu>,
       William Lee Irwin III <wli@holomorphy.com>,
       linux-kernel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>,
       Mike Galbraith <efault@gmx.de>, Thomas Gleixner <tglx@linutronix.de>,
       caglar@pardus.org.tr
Subject: Re: [REPORT] cfs-v4 vs sd-0.44
Message-ID: <20070424072520.GA28387@elte.hu>
References: <200704220959.34978.kernel@kolivas.org> <462DA1E8.9080201@bigpond.net.au> <20070424063633.GA17257@elte.hu> <200704240300.07689.gene.heskett@gmail.com> <20070424070800.GA23463@elte.hu>
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* Ingo Molnar <mingo@elte.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