Received: from localhost (unknown [200.46.204.183]) by postgresql.org (Postfix) with ESMTP id 746B92E00A6 for ; Thu, 20 Mar 2008 17:23:26 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 58503-08-2 for ; Thu, 20 Mar 2008 17:22:39 -0300 (ADT) Received: from mx3.hub.org (mx3.hub.org [206.223.169.73]) by postgresql.org (Postfix) with ESMTP id 99B902E0039 for ; Thu, 20 Mar 2008 17:22:38 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.5 Received: from mail63.csoft.net (leary.csoft.net [205.205.214.5]) by mx3.hub.org (Postfix) with SMTP id 7C6C437BEAB for ; Thu, 20 Mar 2008 17:22:25 -0300 (ADT) Received: (qmail 12245 invoked by uid 1112); 20 Mar 2008 20:22:15 -0000 Date: Thu, 20 Mar 2008 16:22:14 -0400 (EDT) From: Kris Jurka X-X-Sender: books@leary.csoft.net To: Albe Laurenz cc: Laurent Raufaste *EXTERN* , pgsql-performance@postgresql.org Subject: Re: PG writes a lot to the disk In-Reply-To: Message-ID: References: <669dc9710803190418g45002e87k19cb742579c1eeac@mail.gmail.com> <669dc9710803200348x64122249jd2ac5924d78a6da0@mail.gmail.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200803/411 X-Sequence-Number: 29365 On Thu, 20 Mar 2008, Albe Laurenz wrote: > PostgreSQL doesn't write into the table files when it SELECTs data. > It could easily be hint bit updates that are set by selects getting written. Kris Jurka