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Message-ID: <20120924155259.GB23478@x1.osrc.amd.com>
Date: Mon, 24 Sep 2012 17:53:01 +0200
From: Borislav Petkov <bp@...en8.de>
To: Nikolay Ulyanitsky <lystor@...il.com>
Cc: linux-kernel@...r.kernel.org, Mike Galbraith <efault@....de>,
Andreas Herrmann <andreas.herrmann3@....com>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...nel.org>
Subject: Re: 20% performance drop on PostgreSQL 9.2 from kernel 3.5.3 to
3.6-rc5 on AMD chipsets - bisected
On Mon, Sep 24, 2012 at 06:23:37PM +0300, Nikolay Ulyanitsky wrote:
> On 24 September 2012 18:00, Mel Gorman <mgorman@...e.de> wrote:
> > Reverting Mike's patch might fix this Postgres regression but it reintroduces the overhead caused
> > by commit 4dcfe102 for other cases.
>
> I just tested pgbench on kernel 3.6-rc7.
> There is no performance regression between 3.5.3 and 3.6-rc7 on AMD X6.
Yes,
what I'm seeing here too. Thanks for testing.
Just one thing, please hit reply-to-all when you reply to the thread so
that everybody can get your mail. I'm readding them for now.
Thanks.
--
Regards/Gruss,
Boris.
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