Re: Linux filesystem performance and checkpoint sorting

From: "Stephen J(dot) Butler" <stephen(dot)butler(at)gmail(dot)com>
To: Greg Smith <greg(at)2ndquadrant(dot)com>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Linux filesystem performance and checkpoint sorting
Date: 2011-02-04 23:55:13
Message-ID: AANLkTikhtKXkGZPsXj2sA1QLta3f8aGHGVbnrF8FBGFB@mail.gmail.com
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On Fri, Feb 4, 2011 at 12:31 PM, Greg Smith <greg(at)2ndquadrant(dot)com> wrote:
> -Switching from ext3 to xfs gave over a 3X speedup on the smaller test set:
>  from the 600-700 TPS range to around 2200 TPS.  TPS rate on the larger data
> set actually slowed down a touch on XFS, around 10%.  Still, such a huge win
> when it's better makes it easy to excuse the occasional cases where it's a
> bit slower.

Did you see that they improved XFS scalability in 2.6.37?

http://kernelnewbies.org/Linux_2_6_37#head-dfa29df2b21f5a72fb17f041a7356deeea3d159e

Looks like there's more XFS improvements in store for 2.6.38.

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