Received: from maia.hub.org (maia-5.hub.org [200.46.204.29]) by mail.postgresql.org (Postfix) with ESMTP id 18639B5DC43 for ; Wed, 25 May 2011 23:48:01 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.29]) (amavisd-maia, port 10024) with ESMTP id 59316-01-9 for ; Thu, 26 May 2011 02:47:52 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from www.postnewspapers.com.au (www.postnewspapers.com.au [173.230.139.50]) by mail.postgresql.org (Postfix) with ESMTP id 86454B5DD26 for ; Wed, 25 May 2011 23:47:32 -0300 (ADT) Received: from localhost (localhost [127.0.0.1]) by www.postnewspapers.com.au (Postfix) with ESMTP id 0BC63823; Wed, 25 May 2011 22:40:30 -0400 (EDT) X-Virus-Scanned: amavisd-new at postnewspapers.com.au.com Received: from www.postnewspapers.com.au ([127.0.0.1]) by localhost (www.postnewspapers.com.au [127.0.0.1]) (amavisd-new, port 10024) with LMTP id FTtZ3p0VlniQ; Wed, 25 May 2011 22:40:29 -0400 (EDT) Received: from mail.postnewspapers.com.au (ppp171-128.static.internode.on.net [150.101.171.128]) by www.postnewspapers.com.au (Postfix) with ESMTP id 4BE6E2D; Wed, 25 May 2011 22:40:29 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mail.postnewspapers.com.au (Postfix) with ESMTP id 4EE08AEE6B; Thu, 26 May 2011 10:40:28 +0800 (WST) X-Virus-Scanned: Debian amavisd-new at postnewspapers.com.au Received: from mail.postnewspapers.com.au ([127.0.0.1]) by localhost (mail.postnewspapers.com.au [127.0.0.1]) (amavisd-new, port 10024) with LMTP id U1FBqwGy+sHx; Thu, 26 May 2011 10:40:23 +0800 (WST) Received: from [10.1.1.5] (203-206-49-57.dyn.iinet.net.au [203.206.49.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "Craig Ringer", Issuer "POST Certificate Authority" (verified OK)) by mail.postnewspapers.com.au (Postfix) with ESMTPSA id AD3D6AEE6A; Thu, 26 May 2011 10:40:23 +0800 (WST) Message-ID: <4DDDBD96.4010809@postnewspapers.com.au> Date: Thu, 26 May 2011 10:40:22 +0800 From: Craig Ringer User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110428 Fedora/3.1.10-1.fc14 Thunderbird/3.1.10 MIME-Version: 1.0 To: panam CC: pgsql-performance@postgresql.org Subject: Re: Hash Anti Join performance degradation References: <1306210464806-4420974.post@n5.nabble.com> <4DDB47BC.8030504@postnewspapers.com.au> <1306247697267-4422247.post@n5.nabble.com> <4DDC6109.7060708@postnewspapers.com.au> <1306341749094-4425890.post@n5.nabble.com> In-Reply-To: <1306341749094-4425890.post@n5.nabble.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-1.91 tagged_above=-10 required=5 tests=BAYES_00=-1.9, T_RP_MATCHES_RCVD=-0.01 X-Spam-Level: X-Archive-Number: 201105/357 X-Sequence-Number: 43866 On 05/26/2011 12:42 AM, panam wrote: > So, would you like to further investigate my previous issue (I think it is > still strange that performance suddenly dropped that dramatically)? It's a bit beyond me, but I suspect that it'd be best if you could hang onto the dump file in case someone has the time and enthusiasm to investigate it. I take it you can't distribute the dump file, even privately? -- Craig Ringer