linux-kernel - Re: Results for balancenuma v8, autonuma-v28fast and numacore-20121126

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Message-ID: <50B8DA2D.8030604@redhat.com>
Date:	Fri, 30 Nov 2012 11:09:17 -0500
From:	Rik van Riel <riel@...hat.com>
To:	Mel Gorman <mgorman@...e.de>
CC:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Ingo Molnar <mingo@...nel.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Hugh Dickins <hughd@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Paul Turner <pjt@...gle.com>, Hillf Danton <dhillf@...il.com>,
	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	Alex Shi <lkml.alex@...il.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Aneesh Kumar <aneesh.kumar@...ux.vnet.ibm.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Results for balancenuma v8, autonuma-v28fast and numacore-20121126

On 11/30/2012 06:41 AM, Mel Gorman wrote:
> This is an another insanely long mail. Short summary, based on the results
> of what is in tip/master right now, I think if we're going to merge
> anything for v3.8 it should be the "Automatic NUMA Balancing V8". It does
> reasonably well for many of the workloads and AFAIK there is no reason why
> numacore or autonuma could not be rebased on top with the view to merging
> proper scheduling and placement policies in 3.9.

Given how minimalistic balancenuma is, and how there does not seem
to be anything significant in the way of performance regressions
with balancenuma, I have no objections to Linus merging all of
balancenuma for 3.8.

That could significantly reduce the amount of NUMA code we need
to "fight over" for the 3.9 kernel :)

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