linux-kernel - Re: [patch] CFS scheduler, -v5

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Message-ID: <20070423012509.GA25162@wotan.suse.de>
Date:	Mon, 23 Apr 2007 03:25:09 +0200
From:	Nick Piggin <npiggin@...e.de>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Con Kolivas <kernel@...ivas.org>,
	Mike Galbraith <efault@....de>,
	Arjan van de Ven <arjan@...radead.org>,
	Peter Williams <pwil3058@...pond.net.au>,
	Thomas Gleixner <tglx@...utronix.de>, caglar@...dus.org.tr,
	Willy Tarreau <w@....eu>,
	Gene Heskett <gene.heskett@...il.com>, Mark Lord <lkml@....ca>,
	Ulrich Drepper <drepper@...hat.com>
Subject: Re: [patch] CFS scheduler, -v5

On Mon, Apr 23, 2007 at 03:12:29AM +0200, Ingo Molnar wrote:
> 
> i'm pleased to announce release -v5 of the CFS scheduler patchset. The 
> patch against v2.6.21-rc7 and v2.6.20.7 can be downloaded from:
> 
>     http://redhat.com/~mingo/cfs-scheduler/
> 
> this CFS release mainly fixes regressions and improves interactivity:
> 
>     13 files changed, 211 insertions(+), 199 deletions(-)
> 
> the biggest user-visible change in -v5 are various interactivity 
> improvements (especially under higher load) to fix reported regressions, 
> and an improved way of handling nice levels. There's also a new 
> sys_sched_yield_to() syscall implementation for i686 and x86_64.
> 
> All known regressions have been fixed. (knock on wood)

I think the granularity is still much too low. Why not increase it to
something more reasonable as a default?

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