linux-kernel - Re: [RFC PATCH 00/10] Improve numa scheduling by consolidating tasks

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Message-ID: <20130730082001.GG3008@twins.programming.kicks-ass.net>
Date:	Tue, 30 Jul 2013 10:20:01 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
Cc:	Mel Gorman <mgorman@...e.de>, Ingo Molnar <mingo@...nel.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Preeti U Murthy <preeti@...ux.vnet.ibm.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [RFC PATCH 00/10] Improve numa scheduling by consolidating tasks

On Tue, Jul 30, 2013 at 10:17:55AM +0200, Peter Zijlstra wrote:
> On Tue, Jul 30, 2013 at 01:18:15PM +0530, Srikar Dronamraju wrote:
> > Here is an approach that looks to consolidate workloads across nodes.
> > This results in much improved performance. Again I would assume this work
> > is complementary to Mel's work with numa faulting.
> 
> I highly dislike the use of task weights here. It seems completely
> unrelated to the problem at hand.

I also don't particularly like the fact that it's purely process based.
The faults information we have gives much richer task relations.
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