Re: XFS filessystem for Datawarehousing - Mailing list pgsql-performance

From Michael Stone
Subject Re: XFS filessystem for Datawarehousing
Date
Msg-id 20060802233336.GN2900@mathom.us
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In response to Re: XFS filessystem for Datawarehousing  ("Steve Poe" <steve.poe@gmail.com>)
Responses Re: XFS filessystem for Datawarehousing  ("Luke Lonergan" <llonergan@greenplum.com>)
List pgsql-performance
On Wed, Aug 02, 2006 at 02:26:39PM -0700, Steve Poe wrote:
>For the past  year, I have been running odbc-bench on a dual-opteron with
>4GB of RAM using a 8GB sample data. I found the performance difference
>between EXT3, JFS, and XFS  is +/- 5-8%.

That's not surprising when your db is only 2x your RAM. You'll find that
filesystem performance is much more important when your database is 10x+
your RAM (which is often the case once your database heads toward a TB).

>Testing newer kernels and read-ahead patches may benefit you as well.

I've been really impressed by the adaptive readahead patches with
postgres.

Mike Stone

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