linux-kernel - Re: [PATCH 00/45] Automatic NUMA Balancing V7

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Message-ID: <20121210090730.GF1009@suse.de>
Date:	Mon, 10 Dec 2012 09:07:30 +0000
From:	Mel Gorman <mgorman@...e.de>
To:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Ingo Molnar <mingo@...nel.org>, Rik van Riel <riel@...hat.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: [PATCH 00/45] Automatic NUMA Balancing V7

On Fri, Dec 07, 2012 at 04:15:39PM +0530, Srikar Dronamraju wrote:
> 
> Got a chance to run autonuma-benchmark on a 8 node, 64 core machine. 
> the results are as below. (for each kernel I ran 5 iterations of
> autonuma-benchmark)
> 

Thanks, a test of v10 would also be appreciated. The differences between
V7 and V10 are small but do include a change in how migrate rate-limiting
is handled. It is unlikely it'll make a difference to this test but I'd
like to rule it out.

> KernelVersion: 3.7.0-rc3-mainline_v37rc7()

What kernel is this? The name begins with 3.7-rc3 but then says
v37rc7. v37rc7 of what? I thought it might be v3.7-rc7 but it already said
it's 3.7-rc3 so I'm confused. Would it be possible to base the tests on
a similar baseline kernel such as 3.7.0-rc7 or 3.7.0-rc8? The
balancenuma patches should apply and the autonuma patches can be taken
from the mm-autonuma-v28fastr4-mels-rebase branch in
git://git.kernel.org/pub/scm/linux/kernel/git/mel/linux-balancenuma.git

Either way, the figures look bad. I'm trying to find a similar machine
but initially at least I have not had much luck. Can you post the .config
you used for balancenuma in case I can reproduce the problem on a 4-node
machine please? Are all the nodes the same size?

Thanks!

-- 
Mel Gorman
SUSE Labs
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