Received: from localhost (maia-3.hub.org [200.46.204.184]) by postgresql.org (Postfix) with ESMTP id 719349F939F for ; Tue, 2 Jan 2007 10:35:47 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.184]) (amavisd-new, port 10024) with ESMTP id 09894-03 for ; Tue, 2 Jan 2007 10:35:28 -0400 (AST) X-Greylist: delayed 00:30:49.576084 by SQLgrey-1.7.4 Received: from svr4.postgresql.org (svr4.postgresql.org [66.98.251.159]) by postgresql.org (Postfix) with ESMTP id E9B599FA217 for ; Tue, 2 Jan 2007 10:35:33 -0400 (AST) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.3 Received: from www.3times25.net (66-23-211-34.clients.speedfactory.net [66.23.211.34]) by svr4.postgresql.org (Postfix) with ESMTP id B360F5AF882 for ; Tue, 2 Jan 2007 14:04:43 +0000 (GMT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by www.3times25.net (Postfix) with ESMTP id 793915401F for ; Tue, 2 Jan 2007 09:04:30 -0500 (EST) Message-ID: <459A666E.9090508@3times25.net> Date: Tue, 02 Jan 2007 09:04:30 -0500 From: Geoffrey User-Agent: Thunderbird 1.5.0.8 (X11/20061025) MIME-Version: 1.0 To: PostgreSQL Performance Subject: Re: High update activity, PostgreSQL vs BigDBMS References: <45935A49.6080602@burntmail.com> <20061229220747.GB15429@alvh.no-ip.org> In-Reply-To: <20061229220747.GB15429@alvh.no-ip.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200701/11 X-Sequence-Number: 22612 Alvaro Herrera wrote: > Ron wrote: > >> C= What file system are you using? Unlike BigDBMS, pg does not have >> its own native one, so you have to choose the one that best suits >> your needs. For update heavy applications involving lots of small >> updates jfs and XFS should both be seriously considered. > > Actually it has been suggested that a combination of ext2 (for WAL) and > ext3 (for data, with data journalling disabled) is a good performer. > AFAIK you don't want the overhead of journalling for the WAL partition. I'm curious as to why ext3 for data with journalling disabled? Would that not be the same as ext2? -- Until later, Geoffrey Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety. - Benjamin Franklin