Received: from localhost (maia-1.hub.org [200.46.204.191]) by postgresql.org (Postfix) with ESMTP id D5EE49FB4E1 for ; Sun, 5 Aug 2007 13:08:00 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.191]) (amavisd-maia, port 10024) with ESMTP id 57606-04 for ; Sun, 5 Aug 2007 13:07:57 -0300 (ADT) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.5 Received: from fk-out-0910.google.com (fk-out-0910.google.com [209.85.128.187]) by postgresql.org (Postfix) with ESMTP id E16069FB474 for ; Sun, 5 Aug 2007 13:07:56 -0300 (ADT) Received: by fk-out-0910.google.com with SMTP id b27so1404362fka for ; Sun, 05 Aug 2007 09:07:55 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:user-agent:mime-version:to:cc:subject:references:in-reply-to:content-type:content-transfer-encoding:sender; b=nLxpMKArF60bnXHbmmmPYiJtxdgtUVoyMyXUdFba6kOA93j7BivDNcKVRLgtIOpkqvqeUpJa2dNrCCjnrX9SN/1GY9zLv1Q302B/gahzEcYSz9LJ2NjwAgJiHpmvSCkFzt+8KJkcq/JWeJvAbR8zY8fPhY2yn1eplL55kBDstT4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:user-agent:mime-version:to:cc:subject:references:in-reply-to:content-type:content-transfer-encoding:sender; b=ltCLeXFnpJr/Vsf5Xe6tgSFwPXNsPf5hb/5MlaJRDRRE/cN6SnBEyxb+ebMDQT/oJ0j9szWCQrrTrs+t9aD/bbnEbk1/LMv7AM5aseYqPp32aK4eSmsg52qUKuy7eAbTxW3DZkk+vdoVBvNjmexqUP3FrQnwrkpSmCbS7B9oMx0= Received: by 10.86.3.2 with SMTP id 2mr3758079fgc.1186330075371; Sun, 05 Aug 2007 09:07:55 -0700 (PDT) Received: from ?192.168.0.199? ( [80.222.48.97]) by mx.google.com with ESMTPS id b17sm10775058fka.2007.08.05.09.07.46 (version=SSLv3 cipher=RC4-MD5); Sun, 05 Aug 2007 09:07:54 -0700 (PDT) Message-ID: <46B5F5C7.1070901@enterprisedb.com> Date: Sun, 05 Aug 2007 17:07:35 +0100 From: Heikki Linnakangas User-Agent: Icedove 1.5.0.10 (X11/20070329) MIME-Version: 1.0 To: Sven Clement CC: Tom Lane , Andrew Kroeger , Mark Lewis , pgsql-performance@postgresql.org Subject: Re: Performance problems with large telemetric datasets on 7.4.2 References: <881035ea0708030652r37b25a86g61e88e1f5e95eab2@mail.gmail.com> <1186150836.19184.194.camel@archimedes> <881035ea0708030857s621af020r4d3d7b994e2ca9a3@mail.gmail.com> <46B39A77.8050105@sprocks.gotdns.com> <4770.1186180449@sss.pgh.pa.us> <881035ea0708041303h4ea256b3q4b40c5291f8cd3b7@mail.gmail.com> In-Reply-To: <881035ea0708041303h4ea256b3q4b40c5291f8cd3b7@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200708/34 X-Sequence-Number: 26164 Sven Clement wrote: > OK so beginning on Monday I will test the config on a 8.2.x to verify the > performance issues, but I also found some disturbing info's on the net, that > the index may be corrupted because of the big difference between an index > entry which is deleted and the new value inserted afterwards, which should > not be an issue with a btree, but do you guys know something more about it, > sorry I'm really good in SQL but in Postgre I'm still a beginner. I don't remember a bug like that. Where did you read that from? -- Heikki Linnakangas EnterpriseDB http://www.enterprisedb.com