linux-kernel - Re: [RFC PATCH 0/5] Improve hugepage allocation success rates under load V3

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Date:	Tue, 14 Aug 2012 10:23:58 +0100
From:	Mel Gorman <mgorman@...e.de>
To:	Jim Schutt <jaschut@...dia.gov>
Cc:	Linux-MM <linux-mm@...ck.org>, Rik van Riel <riel@...hat.com>,
	Minchan Kim <minchan@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 0/5] Improve hugepage allocation success rates under
 load V3

On Mon, Aug 13, 2012 at 02:35:46PM -0600, Jim Schutt wrote:
> Hi Mel,
> 
> On 08/12/2012 02:22 PM, Mel Gorman wrote:
> 
> >
> >I went through the patch again but only found the following which is a
> >weak candidate. Still, can you retest with the following patch on top and
> >CONFIG_PROVE_LOCKING set please?
> >
> 
> I've gotten in several hours of testing on this patch with
> no issues at all, and no output from CONFIG_PROVE_LOCKING
> (I'm assuming it would show up on a serial console).  So,
> it seems to me this patch has done the trick.
> 

Super.

> CPU utilization is staying under control, and write-out rate
> is good.
> 

Even better.

> You can add my Tested-by: as you see fit.  If you work
> up any refinements and would like me to test, please
> let me know.
> 

I'll be adding your Tested-by and I'll keep you cc'd on the series. It'll
look a little different because I'm expect to adjust it slightly to match
Andrew's tree but there should be no major surprises and my expectation is
that testing a -rc kernel after it gets merged is all that is necessary. I'm
planning to backport this to -stable but it'll remain to be seen if I can
convince the relevant maintainers that it should be merged.

Thanks.

-- 
Mel Gorman
SUSE Labs
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