Received: from localhost (maia-5.hub.org [200.46.204.182]) by postgresql.org (Postfix) with ESMTP id 16DC59FB60D for ; Wed, 28 Feb 2007 15:30:14 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.182]) (amavisd-new, port 10024) with ESMTP id 24211-08 for ; Wed, 28 Feb 2007 15:29:42 -0400 (AST) X-Greylist: from auto-whitelisted by SQLgrey-1.7.4 Received: from relais.videotron.ca (relais.videotron.ca [24.201.245.36]) by postgresql.org (Postfix) with ESMTP id 60EFF9FB5F9 for ; Wed, 28 Feb 2007 15:30:01 -0400 (AST) Received: from [207.253.108.107] by VL-MO-MR002.ip.videotron.ca (Sun Java System Messaging Server 6.2-2.05 (built Apr 28 2005)) with ESMTP id <0JE600IA8U5ZQ620@VL-MO-MR002.ip.videotron.ca> for pgsql-performance@postgresql.org; Wed, 28 Feb 2007 14:30:00 -0500 (EST) Date: Wed, 28 Feb 2007 14:36:55 -0500 From: Carlos Moreno Subject: Re: Upgraded to 8.2.3 --- still having performance issues In-reply-to: <5279.1172683250@sss.pgh.pa.us> To: PostgreSQL Performance Message-id: <45E5D9D7.5090608@mochima.com> MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7BIT X-Accept-Language: en-us, en References: <45E5B7D2.5020306@mochima.com> <5279.1172683250@sss.pgh.pa.us> User-Agent: Mozilla Thunderbird 1.0.8-1.1.fc4 (X11/20060501) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0.05 tagged_above=0 required=5 tests=AWL, BAYES_50, SPF_HELO_PASS X-Spam-Level: X-Archive-Number: 200702/345 X-Sequence-Number: 23399 Tom Lane wrote: >Carlos Moreno writes: > > >>I would have expected a mind-blowing increase in responsiveness and >>overall performance. However, that's not the case --- if I didn't know >>better, I'd probably tend to say that it is indeed the opposite >>(performance seems to have deteriorated) >> >> > >Did you remember to re-ANALYZE everything after loading up the new >database? That's a frequent gotcha ... > > I had done it, even though I was under the impression that it wouldn't be necessary with 8.2.x (I still chose to do it just in case). I've since discovered a problem that *may* be related to the deterioration of the performance *now* --- but that still does not explain the machine choking since last night, so any comments or tips are still most welcome. Thanks, Carlos --