X-Original-To: pgsql-performance-postgresql.org@postgresql.org Received: from localhost (mx1.hub.org [200.46.208.251]) by postgresql.org (Postfix) with ESMTP id 4A8C99FB328 for ; Wed, 2 Aug 2006 20:34:15 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.208.251]) (amavisd-new, port 10024) with ESMTP id 03966-01 for ; Wed, 2 Aug 2006 20:34:04 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey- Received: from vms042pub.verizon.net (vms042pub.verizon.net [206.46.252.42]) by postgresql.org (Postfix) with ESMTP id 768DD9FB28E for ; Wed, 2 Aug 2006 20:34:05 -0300 (ADT) Received: from osgiliath.mathom.us ([72.66.113.236]) by vms042.mailsrvcs.net (Sun Java System Messaging Server 6.2-4.02 (built Sep 9 2005)) with ESMTPA id <0J3E00HVL9G6DNE7@vms042.mailsrvcs.net> for pgsql-performance@postgresql.org; Wed, 02 Aug 2006 18:33:43 -0500 (CDT) Received: from localhost (localhost [127.0.0.1]) by osgiliath.mathom.us (Postfix) with ESMTP id 9D7276FA9A for ; Wed, 02 Aug 2006 19:33:41 -0400 (EDT) Received: from osgiliath.mathom.us ([127.0.0.1]) by localhost (osgiliath.home.mathom.us [127.0.0.1]) (amavisd-new, port 10024) with LMTP id BqdrIyQ8mD8d for ; Wed, 02 Aug 2006 19:33:40 -0400 (EDT) Received: by osgiliath.mathom.us (Postfix, from userid 1000) id 8814D6FA9C; Wed, 02 Aug 2006 19:33:39 -0400 (EDT) Date: Wed, 02 Aug 2006 19:33:39 -0400 From: Michael Stone Subject: Re: XFS filessystem for Datawarehousing In-reply-to: <721b21dc0608021426p26d2a79ap37e0f55b2328b453@mail.gmail.com> To: pgsql-performance@postgresql.org Mail-followup-to: pgsql-performance@postgresql.org Message-id: <20060802233336.GN2900@mathom.us> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii; format=flowed Content-disposition: inline X-Virus-Scanned: Debian amavisd-new at mathom.us X-Pgp-Fingerprint: 53 FF 38 00 E7 DD 0A 9C 84 52 84 C5 EE DF 7C 88 References: <01cb01c6b676$8ef67330$0a00a8c0@trivadis.com> <721b21dc0608021426p26d2a79ap37e0f55b2328b453@mail.gmail.com> User-Agent: Mutt/1.5.12-2006-07-14 X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=1.249 tagged_above=0 required=5 tests=AWL, FORGED_RCVD_HELO, SPF_PASS X-Spam-Level: * X-Archive-Number: 200608/31 X-Sequence-Number: 20216 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