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

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Message-ID: <20070418181218.GA13628@elte.hu>
Date:	Wed, 18 Apr 2007 20:12:18 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	William Lee Irwin III <wli@...omorphy.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Matt Mackall <mpm@...enic.com>, Nick Piggin <npiggin@...e.de>,
	Peter Williams <pwil3058@...pond.net.au>,
	Mike Galbraith <efault@....de>,
	Con Kolivas <kernel@...ivas.org>, ck list <ck@....kolivas.org>,
	Bill Huey <billh@...ppy.monkey.org>,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.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]


* William Lee Irwin III <wli@...omorphy.com> wrote:

> It does largely achieve the sort of fairness it set out for itself as 
> its design goal. One should also note that the queueing mechanism is 
> more than flexible enough to handle prioritization by a number of 
> different methods, and the large precision of its priorities is useful 
> there. So a rather broad variety of policies can be implemented by 
> changing the ->fair_key calculations.

yeah. Note that i concentrated on the bit that makes the largest 
interactivity improvement: to implement "precise scheduling" (a'ka 
complete fairness) between the 100+ user tasks that do a complex 
scheduling dance on a typical desktop on various workloads.

	Ingo
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