Received: from maia.hub.org (maia-3.hub.org [200.46.204.243]) by mail.postgresql.org (Postfix) with ESMTP id D7BE66349EF for ; Mon, 13 Sep 2010 21:54:04 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.243]) (amavisd-maia, port 10024) with ESMTP id 32906-04 for ; Tue, 14 Sep 2010 00:53:55 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from glacier.frostconsultingllc.com (glacier.frostconsultingllc.com [69.36.227.170]) by mail.postgresql.org (Postfix) with ESMTP id 3A8EE634645 for ; Mon, 13 Sep 2010 21:53:57 -0300 (ADT) Received: from dsl081-245-111.sfo1.dsl.speakeasy.net ([64.81.245.111] helo=Sidney-Stratton.local) by glacier.frostconsultingllc.com with esmtpsa (TLSv1:CAMELLIA256-SHA:256) (Exim 4.69) (envelope-from ) id 1OvJmS-0005qB-0K for pgsql-performance@postgresql.org; Mon, 13 Sep 2010 17:53:54 -0700 Message-ID: <4C8EC79F.9080404@agliodbs.com> Date: Mon, 13 Sep 2010 17:53:51 -0700 From: Josh Berkus User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.1b3pre) Gecko/20090223 Thunderbird/3.0b2 MIME-Version: 1.0 To: pgsql-performance@postgresql.org Subject: Re: Where does data in pg_stat_user_tables come from? References: <4C8EAE5E.70201@agliodbs.com> <1284421288.28610.501.camel@jd-desktop.unknown.charter.com> <4C8EB813.6070204@agliodbs.com> <1284423128.28610.592.camel@jd-desktop.unknown.charter.com> In-Reply-To: <1284423128.28610.592.camel@jd-desktop.unknown.charter.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit 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 X-Spam-Level: X-Archive-Number: 201009/67 X-Sequence-Number: 40270 > If you select from pg_stat_user_tables, the counters should be > reasonably close unless your default_statistics_target is way off and > then pg_class.reltuples would be wrong. At least in 8.3, running ANALYZE does not update pg_stat_user_tables in any way. Does it in later versions? -- -- Josh Berkus PostgreSQL Experts Inc. http://www.pgexperts.com