linux-kernel - Re: [Announce] [patch] Modular Scheduler Core and Completely Fair Scheduler [CFS]

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Date:	Sun, 15 Apr 2007 09:54:48 +0200
From:	Mike Galbraith <efault@....de>
To:	Willy Tarreau <w@....eu>
Cc:	Ingo Molnar <mingo@...e.hu>, Nick Piggin <npiggin@...e.de>,
	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Con Kolivas <kernel@...ivas.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [Announce] [patch] Modular Scheduler Core and Completely Fair
	Scheduler [CFS]

On Sat, 2007-04-14 at 15:01 +0200, Willy Tarreau wrote:

> Well, I'll stop heating the room for now as I get out of ideas about how
> to defeat it. I'm convinced. I'm impatient to read about Mike's feedback
> with his workload which behaves strangely on RSDL. If it works OK here,
> it will be the proof that heuristics should not be needed.

You mean the X + mp3 player + audio visualization test?  X+Gforce
visualization have problems getting half of my box in the presence of
two other heavy cpu using tasks.  Behavior is _much_ better than
RSDL/SD, but the synchronous nature of X/client seems to be a problem.  

With this scheduler, renicing X/client does cure it, whereas with SD it
did not help one bit.  (I know a trivial way to cure that, and this
framework makes that possible without dorking up fairness as a general
policy.)

	-Mike

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