Received: from localhost (maia-3.hub.org [200.46.204.184]) by postgresql.org (Postfix) with ESMTP id 8C6CB9FA3DA; Wed, 24 Jan 2007 23:52:28 -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 60678-09; Wed, 24 Jan 2007 23:52:19 -0400 (AST) X-Greylist: from auto-whitelisted by SQLgrey-1.7.4 X-Greylist: from auto-whitelisted by SQLgrey-1.7.4 Received: from lists.commandprompt.com (host-254.commandprompt.net [207.173.203.254]) by postgresql.org (Postfix) with ESMTP id 37F639FB2E6; Wed, 24 Jan 2007 23:52:25 -0400 (AST) Received: from perhan.alvh.no-ip.org (200-126-100-202.bk7-dsl.surnet.cl [200.126.100.202]) (authenticated bits=0) by lists.commandprompt.com (8.13.7/8.13.6) with ESMTP id l0P3q8qE005310; Wed, 24 Jan 2007 19:52:13 -0800 Received: by perhan.alvh.no-ip.org (Postfix, from userid 1000) id 4B74532A0C; Thu, 25 Jan 2007 00:52:02 -0300 (CLST) Date: Thu, 25 Jan 2007 00:52:02 -0300 From: Alvaro Herrera To: "Jim C. Nasby" Cc: Galy Lee , pgsql-performance@postgresql.org, Hackers Subject: Re: how to plan for vacuum? Message-ID: <20070125035202.GI26006@alvh.no-ip.org> Mail-Followup-To: "Jim C. Nasby" , Galy Lee , pgsql-performance@postgresql.org, Hackers References: <45B6F0A8.1050705@oss.ntt.co.jp> <20070125033917.GD64372@nasby.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070125033917.GD64372@nasby.net> User-Agent: Mutt/1.5.13 (2006-08-11) X-Virus-Scanned: ClamAV version 0.88.5, clamav-milter version 0.88.5 on projects.commandprompt.com X-Virus-Status: Clean X-Greylist: Sender succeded SMTP AUTH authentication, not delayed by milter-greylist-1.6 (lists.commandprompt.com [192.168.2.159]); Wed, 24 Jan 2007 19:52:13 -0800 (PST) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200701/366 X-Sequence-Number: 22967 Jim C. Nasby wrote: > I'll generally start with a cost delay of 20ms and adjust based on IO > utilization. I've been considering set a default autovacuum cost delay to 10ms; does this sound reasonable? -- Alvaro Herrera http://www.CommandPrompt.com/ PostgreSQL Replication, Consulting, Custom Development, 24x7 support