Received: from localhost (maia-2.hub.org [200.46.204.187]) by postgresql.org (Postfix) with ESMTP id 6D79F9FB540 for ; Fri, 29 Jun 2007 10:34:14 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.187]) (amavisd-maia, port 10024) with ESMTP id 52150-02 for ; Fri, 29 Jun 2007 10:34:02 -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 65CAB9FB4F9 for ; Fri, 29 Jun 2007 10:34:04 -0300 (ADT) Received: from perhan.alvh.no-ip.org (201-221-218-82.bk12-dsl.surnet.cl [201.221.218.82]) (authenticated bits=0) by lists.commandprompt.com (8.13.7/8.13.6) with ESMTP id l5TDXrjC019396; Fri, 29 Jun 2007 06:33:58 -0700 Received: by perhan.alvh.no-ip.org (Postfix, from userid 1000) id 3FA4C47C42; Fri, 29 Jun 2007 09:33:51 -0400 (CLT) Date: Fri, 29 Jun 2007 09:33:51 -0400 From: Alvaro Herrera To: Richard Huxton Cc: Ho Fat Tsang , pgsql-performance@postgresql.org Subject: Re: PostgreSQL 8.0 occasionally slow down Message-ID: <20070629133351.GE5184@alvh.no-ip.org> References: <97e6e20f0706272354m5e42c91em177c8b80abb2ea52@mail.gmail.com> <468361A9.1040308@archonet.com> <97e6e20f0706280101y543b871ao4cbf85e57f07f7e9@mail.gmail.com> <46836B66.7050109@archonet.com> <97e6e20f0706280117h20ab2e03n770abc588f17742@mail.gmail.com> <46837C50.20603@archonet.com> <97e6e20f0706281904v4b7c4a97p570deda85e590ee4@mail.gmail.com> <4684CF12.5010003@archonet.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <4684CF12.5010003@archonet.com> User-Agent: Mutt/1.5.13 (2006-08-11) X-Virus-Scanned: ClamAV 0.90.3/3553/Fri Jun 29 03:29:59 2007 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]); Fri, 29 Jun 2007 06:33:58 -0700 (PDT) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200706/641 X-Sequence-Number: 25674 Richard Huxton escribió: > Ho Fat Tsang wrote: > > Correct me if i am wrong. It seems postgresql 8.0 does not bundle > >auto-vacuum by default. So all vacuum and analyse are done manually ? So > >what i have tested related to vaccuum is running auto-vacuum (a executeable > >located in /bin) parallel under normal production load but it seems won't > >help. > > Can't remember whether 8.0 had autovacuum bundled and turned off or not > bundled at all. If it's not running it can't be causing this problem though. The separate binary he found is the contrib pg_autovacuum. Integrated autovac got into 8.1. -- Alvaro Herrera http://www.CommandPrompt.com/ The PostgreSQL Company - Command Prompt, Inc.