linux-kernel - Re: [RFC] another scheduler beater

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Message-Id: <1177389393.6299.16.camel@Homer.simpson.net>
Date:	Tue, 24 Apr 2007 06:36:33 +0200
From:	Mike Galbraith <efault@....de>
To:	davidsen@...idon.tmr.com
Cc:	Linux Kernel M/L <linux-kernel@...r.kernel.org>
Subject: Re: [RFC] another scheduler beater

On Mon, 2007-04-23 at 17:55 -0400, Bill Davidsen wrote:

> Based on just this script as load I would say renice on X isn't a good 
> thing. Based on one small test, I would say that renice of X in 
> conjunction with heavy disk i/o and a single fast scrolling xterm (think 
> kernel compile) seems to slow the raid6 thread measurably.

Yeah, I was testing a UP kernel yesterday.  It doesn't take much renice
to severely injure the competition with them having no place else to go.
Nice -19 is definitely overkill.

	-Mike

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