linux-kernel - Re: 20% performance drop on PostgreSQL 9.2 from kernel 3.5.3 to 3.6-rc5 on AMD chipsets

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Message-ID: <CA+MedizYAzdKDkGb0qX5XXTTodgWPuX4=ttCY103UXYLi_0Ocg@mail.gmail.com>
Date:	Mon, 24 Sep 2012 18:23:37 +0300
From:	Nikolay Ulyanitsky <lystor@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: 20% performance drop on PostgreSQL 9.2 from kernel 3.5.3 to
 3.6-rc5 on AMD chipsets - bisected

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.
Thx

--
With best regards,
Nikolay
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