Received: from localhost (maia-1.hub.org [200.46.204.191]) by postgresql.org (Postfix) with ESMTP id 7E9FC9FB766 for ; Mon, 4 Jun 2007 15:08:22 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.191]) (amavisd-maia, port 10024) with ESMTP id 14704-03 for ; Mon, 4 Jun 2007 15:08:17 -0300 (ADT) 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 5EA5F9FB1F0 for ; Mon, 4 Jun 2007 15:08:18 -0300 (ADT) Received: from perhan.alvh.no-ip.org (201-221-217-243.bk12-dsl.surnet.cl [201.221.217.243]) (authenticated bits=0) by lists.commandprompt.com (8.13.7/8.13.6) with ESMTP id l54I8HVT017391; Mon, 4 Jun 2007 11:08:18 -0700 Received: by perhan.alvh.no-ip.org (Postfix, from userid 1000) id E1D6932A1A; Mon, 4 Jun 2007 14:08:13 -0400 (CLT) Date: Mon, 4 Jun 2007 14:08:13 -0400 From: Alvaro Herrera To: Douglas J Hunley Cc: pgsql-performance@postgresql.org Subject: Re: upgraded to pgsql 8.2.4, getting worse performance then 7.4.x Message-ID: <20070604180813.GR4779@alvh.no-ip.org> References: <200706020913.32241.doug@hunley.homeip.net> <200706031324.15605.doug@hunley.homeip.net> <200706041305.12740.doug@hunley.homeip.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200706041305.12740.doug@hunley.homeip.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]); Mon, 04 Jun 2007 11:08:18 -0700 (PDT) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200706/35 X-Sequence-Number: 25068 Douglas J Hunley wrote: > On a side note, is there any real benefit to using autovacuum over a > periodically scheduled vacuum? I ask because we have the latter already coded > up and cron'd and it seems to keep things fairly optimized. No, not really. Maybe autovacuum could get to specific highly-updated tables quickier than the cron job, or slow down when there's no activity; but your current setup is good enough for you there's no reason to change. > BTW, I'm on the list, so there's no need to reply direct. I can get the > replies from the list Huh, sorry, this is just the customary way to use these lists. Personally, I prefer to get several copies of each message and have my software (procmail) deliver only one to me discarding the duplicates. That way, if one is lost or takes long to get home, I don't even notice it (it used to happen a lot on the lists). Look at the "eliminatecc" option in the Majordomo user web pages. -- Alvaro Herrera http://www.CommandPrompt.com/ The PostgreSQL Company - Command Prompt, Inc.