Received: from maia.hub.org (unknown [200.46.204.183]) by mail.postgresql.org (Postfix) with ESMTP id 64CDF799309 for ; Wed, 17 Mar 2010 04:36:28 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 54899-06 for ; Wed, 17 Mar 2010 07:36:17 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from 27.mail-out.ovh.net (27.mail-out.ovh.net [91.121.30.210]) by mail.postgresql.org (Postfix) with SMTP id 46793799302 for ; Wed, 17 Mar 2010 04:36:16 -0300 (ADT) Received: (qmail 17833 invoked by uid 503); 17 Mar 2010 07:39:23 -0000 Received: from b9.ovh.net (HELO mail626.ha.ovh.net) (213.186.33.59) by 27.mail-out.ovh.net with SMTP; 17 Mar 2010 07:39:23 -0000 Received: from b0.ovh.net (HELO queueout) (213.186.33.50) by b0.ovh.net with SMTP; 17 Mar 2010 07:36:51 -0000 Received: from par69-8-88-161-102-87.fbx.proxad.net (HELO localhost) (lists%peufeu.com@88.161.102.87) by ns0.ovh.net with SMTP; 17 Mar 2010 07:36:51 -0000 Content-Type: text/plain; charset=utf-8; format=flowed; delsp=yes To: "Alvaro Herrera" , "Dave Crooke" Cc: pgsql-performance@postgresql.org Subject: Re: Block at a time ... References: <20100317001405.GL3037@alvh.no-ip.org> Date: Wed, 17 Mar 2010 08:32:09 +0100 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: "Pierre C" Message-ID: In-Reply-To: <20100317001405.GL3037@alvh.no-ip.org> User-Agent: Opera Mail/10.10 (Linux) X-Ovh-Tracer-Id: 9697094422854698632 X-Ovh-Remote: 88.161.102.87 (par69-8-88-161-102-87.fbx.proxad.net) X-Ovh-Local: 213.186.33.20 (ns0.ovh.net) X-Spam-Check: DONE|U 0.5/N X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-2.599 tagged_above=-10 required=5 tests=BAYES_00=-2.599 X-Spam-Level: X-Archive-Number: 201003/189 X-Sequence-Number: 38014 > I was thinking in something like that, except that the factor I'd use > would be something like 50% or 100% of current size, capped at (say) 1 > GB. Using fallocate() ?