linux-kernel - Re: [patch] CFS scheduler, -v8

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Message-ID: <1178217867.7475.23.camel@tongli.jf.intel.com>
Date:	Thu, 3 May 2007 11:44:27 -0700
From:	"Li, Tong N" <tong.n.li@...el.com>
To:	William Lee Irwin III <wli@...omorphy.com>
CC:	Srivatsa Vaddagiri <vatsa@...ibm.com>,
	Damien Wyart <damien.wyart@...e.fr>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	torvalds@...ux-foundation.org
Subject: Re: [patch] CFS scheduler, -v8

On Thu, 2007-05-03 at 08:53 -0700, William Lee Irwin III wrote:
> On Thu, May 03, 2007 at 03:29:32PM +0200, Damien Wyart wrote:
> >> What are your thoughts/plans concerning merging CFS into mainline ? Is
> >> it a bit premature to get it into 2.6.22 ? I remember Linus was ok to
> >> change the default scheduler rapidly (the discussion was about sd at
> >> that time) to get more testing than in -mm.
> 
> On Thu, May 03, 2007 at 08:23:18PM +0530, Srivatsa Vaddagiri wrote:
> > And what about group scheduling extensions? Do you have plans to work on
> > it? I was begining to work on a prototype to do group scheduling based
> > on CFS, basically on the lines of what you and Linus had outlined
> > earlier:
> > 	http://lkml.org/lkml/2007/4/18/271
> > 	http://lkml.org/lkml/2007/4/18/244
> 
> Tong Li's Trio scheduler does a bit of this, though it doesn't seem to
> have the mindshare cfs seems to have acquired.
> 
> The hyperlink seems to have broken, though:
> 	http://www.cs.duke.edu/~tongli/linux/linux-2.6.19.2-trio.patch

Yeah, I just fixed the link. The code was written based on the 2.6.19.2
scheduler. I could forward-port it to the latest kernel if there's
interest and I can find time. :) Here's a description of the design:

http://lkml.org/lkml/2007/4/20/286

Thanks,

  tong
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