Received: from localhost (maia-1.hub.org [200.46.204.191]) by postgresql.org (Postfix) with ESMTP id EACC49FBC5A for ; Thu, 22 Mar 2007 10:52:18 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.191]) (amavisd-new, port 10024) with ESMTP id 03525-04 for ; Thu, 22 Mar 2007 10:52:08 -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 E73BF9FBC23 for ; Thu, 22 Mar 2007 10:52:08 -0300 (ADT) Received: from perhan.alvh.no-ip.org (201-221-219-96.bk12-dsl.surnet.cl [201.221.219.96]) (authenticated bits=0) by lists.commandprompt.com (8.13.7/8.13.6) with ESMTP id l2MDq55m031536; Thu, 22 Mar 2007 06:52:06 -0700 Received: by perhan.alvh.no-ip.org (Postfix, from userid 1000) id CC9D3329EA; Thu, 22 Mar 2007 09:52:05 -0400 (CLT) Date: Thu, 22 Mar 2007 09:52:05 -0400 From: Alvaro Herrera To: Dimitri Cc: pgsql-performance@postgresql.org Subject: Re: Parallel Vacuum Message-ID: <20070322135205.GD4102@alvh.no-ip.org> Mail-Followup-To: Dimitri , pgsql-performance@postgresql.org References: <200703221435.54408.dimitrik.fr@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <200703221435.54408.dimitrik.fr@gmail.com> User-Agent: Mutt/1.5.13 (2006-08-11) X-Virus-Scanned: ClamAV 0.88.5/2865/Sun Mar 18 08:27:48 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]); Thu, 22 Mar 2007 06:52:07 -0700 (PDT) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200703/318 X-Sequence-Number: 23723 Dimitri escribió: > Folks, > > is there any constrains/problems/etc. to run several vacuum processes in > parallel while each one is 'vaccuming' one different table? No, no problem. Keep in mind that if one of them takes a very long time, the others will not be able to remove dead tuples that were killed while the long vacuum was running -- unless you are in 8.2. -- Alvaro Herrera http://www.CommandPrompt.com/ The PostgreSQL Company - Command Prompt, Inc.