X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (av.hub.org [200.46.204.144]) by postgresql.org (Postfix) with ESMTP id 1E52911F6C3E for ; Tue, 4 Apr 2006 03:09:14 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 68325-04 for ; Tue, 4 Apr 2006 03:09:12 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey- Received: from davinci.ethosmedia.com (server227.ethosmedia.com [209.128.84.227]) by postgresql.org (Postfix) with ESMTP id 5CB6811F6D0C for ; Tue, 4 Apr 2006 03:09:11 -0300 (ADT) X-EthosMedia-Virus-Scanned: no infections found Received: from [63.195.55.98] (account josh@agliodbs.com HELO spooky.sf.agliodbs.com) by davinci.ethosmedia.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 9207459; Mon, 03 Apr 2006 23:12:10 -0700 From: Josh Berkus Organization: Aglio Database Solutions To: pgsql-performance@postgresql.org Subject: Re: bad performance on Solaris 10 Date: Mon, 3 Apr 2006 23:09:43 -0700 User-Agent: KMail/1.8.2 Cc: Mark Kirkwood , Chris Mair References: <1144111178.3723.80.camel@dell.home.lan> <44320024.60908@paradise.net.nz> In-Reply-To: <44320024.60908@paradise.net.nz> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200604032309.44143.josh@agliodbs.com> X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, score=0.103 required=5 tests=[AWL=0.103] X-Spam-Score: 0.103 X-Spam-Level: X-Archive-Number: 200604/42 X-Sequence-Number: 18126 Mark, > I suspect that making a *separate* filesystem for the pg_xlog directory > and mounting that logging + forcedirectio would be a nice way to also > get performance while keeping the advantages of logging + file > buffercache for the *rest* of the postgres components. > Cheers Yes, we tested this. It makes a huge difference in WAL speed. -- Josh Berkus Aglio Database Solutions San Francisco