Received: from magus.postgresql.org (magus.postgresql.org [87.238.57.229]) by mail.postgresql.org (Postfix) with ESMTP id D133B11C7C00 for ; Wed, 7 Dec 2011 00:14:10 -0400 (AST) Received: from smtp.01.com ([216.115.88.169]) by magus.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1RY8tU-0001yg-Oq for pgsql-performance@postgresql.org; Wed, 07 Dec 2011 04:14:10 +0000 Received: from localhost (localhost.localdomain [127.0.0.1]) by smtp-out-1.01.com (Postfix) with ESMTP id 0B5469D0231 for ; Tue, 6 Dec 2011 22:13:56 -0600 (CST) X-Virus-Scanned: amavisd-new at smtp-out-1.01.com Received: from smtp.01.com ([127.0.0.1]) by localhost (smtp-out-1.01.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 354GqSy6UDTC for ; Tue, 6 Dec 2011 22:13:55 -0600 (CST) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp-out-1.01.com (Postfix) with ESMTP id E16FA9D05B2 for ; Tue, 6 Dec 2011 22:13:55 -0600 (CST) Received: from Sidney-Stratton.local (unknown [70.88.219.5]) by smtp-out-1.01.com (Postfix) with ESMTPSA id 9BC2F9D0231 for ; Tue, 6 Dec 2011 22:13:55 -0600 (CST) Message-ID: <4EDEE802.1040202@agliodbs.com> Date: Tue, 06 Dec 2011 23:13:54 -0500 From: Josh Berkus Organization: PostgreSQL Experts Inc. User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.2.24) Gecko/20111103 Lightning/1.0b2 Thunderbird/3.1.16 MIME-Version: 1.0 To: pgsql-performance@postgresql.org Subject: Re: Question about VACUUM References: <4ED9F32A02000025000437EC@gw.wicourts.gov> <4EDCBAD2020000250004384F@gw.wicourts.gov> In-Reply-To: <4EDCBAD2020000250004384F@gw.wicourts.gov> X-Enigmail-Version: 1.1.1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Pg-Spam-Score: -1.9 (-) X-Archive-Number: 201112/54 X-Sequence-Number: 45853 On 12/5/11 1:36 PM, Kevin Grittner wrote: > I understand the impulse to run autovacuum less frequently or less > aggressively. When we first started running PostgreSQL the default > configuration was very cautious. The default settings are deliberately cautious, as default settings should be. But yes, anyone with a really large/high-traffic database will often want to make autovac more aggressive. -- Josh Berkus PostgreSQL Experts Inc. http://pgexperts.com