linux-kernel - Re: [PATCH] CFS: Fix missing digit off in wmult table

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Message-ID: <alpine.LFD.0.999.0707161045520.20061@woody.linux-foundation.org>
Date:	Mon, 16 Jul 2007 10:47:06 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Roman Zippel <zippel@...ux-m68k.org>
cc:	Ingo Molnar <mingo@...e.hu>, James Bruce <bruce@...rew.cmu.edu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Mike Galbraith <efault@....de>,
	Andrea Arcangeli <andrea@...e.de>,
	Andi Kleen <andi@...stfloor.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Arjan van de Ven <arjan@...radead.org>,
	Chris Wright <chrisw@...s-sol.org>
Subject: Re: [PATCH] CFS: Fix missing digit off in wmult table



On Mon, 16 Jul 2007, Roman Zippel wrote:
>
> To illustrate the problem a little different: a task with a nice level -20 
> got around 700% more cpu time (or 8 times more), now it gets 8500% more 
> cpu time (or 86.7 times more).

Ingo, that _does_ sound excessive. 

How about trying a much less aggressive nice-level (and preferably linear, 
not exponential)?

		Linus
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