Received: from maia.hub.org (maia-2.hub.org [200.46.204.251]) by mail.postgresql.org (Postfix) with ESMTP id B4E68B5DC09 for ; Wed, 21 Sep 2011 13:13:04 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.251]) (amavisd-maia, port 10024) with ESMTP id 62666-10 for ; Wed, 21 Sep 2011 16:12:58 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0-rc2 Received: from moutng.kundenserver.de (moutng.kundenserver.de [212.227.17.8]) by mail.postgresql.org (Postfix) with ESMTP id 24D2FB5DC24 for ; Wed, 21 Sep 2011 13:12:58 -0300 (ADT) Received: from [192.168.1.7] (mail.highperformancepostgresql.com [71.179.240.8]) by mrelayeu.kundenserver.de (node=mreu2) with ESMTP (Nemesis) id 0LfWo9-1RQf9e49e5-00pZcw; Wed, 21 Sep 2011 18:12:56 +0200 Message-ID: <4E7A0D02.6050808@2ndQuadrant.com> Date: Wed, 21 Sep 2011 12:12:50 -0400 From: Greg Smith User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.16) Gecko/20110818 Icedove/3.0.11 MIME-Version: 1.0 To: pgsql-performance@postgresql.org Subject: Re: Show_database_bloat reliability? [was: Re: REINDEX not working for wastedspace] References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Provags-ID: V02:K0:c1XY05ICV+7GRLv+57Ezz/Pz2AnHfcHuwslLbZ4ovJs 4ppYHqcRdqf9ULc22syj+RdctgrOTARTXcj0QVPJ/XjwiWQ/iw 4bgtWgRHzRoSpVGCAJg42uebFCVwDLPoEty627tqqgjAISDCFb jASAKtGT4JL0GezP+Lwa/UhHvU4ZRPSEsozYqjH1a9RP5Hh7fQ pLXftrooq4PCcDH+xO9E1o7qdtc3lNUr0L0UBqs2nSLCJYFbH3 L5LICB+2a1qipAepBEdZLRu6YrMYEaG50oFZ1qjqvmfhW7qiWF jBCuj7glrBuK8jT+A12SDDoIyiAwdP/hxQrc1mk3DJz6hSzud2 8jzyPSy+PovgxAVSVUbc= X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-1.9 tagged_above=-10 required=5 tests=BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001 X-Spam-Level: X-Archive-Number: 201109/329 X-Sequence-Number: 45105 On 09/21/2011 08:43 AM, Guillaume Cottenceau wrote: > AI Rumman writes: > > >> Using the query http://wiki.postgresql.org/wiki/Show_database_bloat, I got the >> > Is this stuff to show database bloat reliable? Only in that increase and decreases of the number reported can be useful for determining if bloat is likely increasing or decreasing--which is the purpose of that query. The value returned is a rough estimate, and should not be considered useful as any sort of absolute measurement. -- Greg Smith 2ndQuadrant US greg@2ndQuadrant.com Baltimore, MD PostgreSQL Training, Services, and 24x7 Support www.2ndQuadrant.us