linux-kernel - Re: Major performance regressions in 3.7rc1/2

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Message-ID: <CAJL_dMtS-rc1b3s9YZ+9Eapc21vF06aCT23GV8eMp13ZxURvBA@mail.gmail.com>
Date:	Wed, 24 Oct 2012 02:15:34 +0300
From:	Anca Emanuel <anca.emanuel@...il.com>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Julian Wollrath <jwollrath@....de>,
	Hugh Dickins <hughd@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Patrik Kullman <patrik.kullman@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>, linux-mm@...ck.org
Subject: Re: Major performance regressions in 3.7rc1/2

On Wed, Oct 24, 2012 at 1:42 AM, David Rientjes <rientjes@...gle.com> wrote:
> On Tue, 23 Oct 2012, Anca Emanuel wrote:
>
>> I have the same problem.
>> Reverting
>> https://github.com/torvalds/linux/commit/957f822a0ab95e88b146638bad6209bbc315bedd
>> solves the problem for me.
>>
>
> If you don't revert anything and do
>
>         echo 0 > /proc/sys/vm/zone_reclaim_mode
>
> after boot, does this also fix the issue?

Yes.
http://imgur.com/JJwiJ
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