X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (av.hub.org [200.46.204.144]) by svr1.postgresql.org (Postfix) with ESMTP id EB96CD71F1 for ; Thu, 22 Sep 2005 20:12:25 -0300 (ADT) Received: from svr1.postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 43240-08 for ; Thu, 22 Sep 2005 23:12:22 +0000 (GMT) Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130]) by svr1.postgresql.org (Postfix) with ESMTP id D64AAD6ECD for ; Thu, 22 Sep 2005 20:12:23 -0300 (ADT) Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1]) by sss.pgh.pa.us (8.13.1/8.13.1) with ESMTP id j8MNCEqY016904; Thu, 22 Sep 2005 19:12:15 -0400 (EDT) To: Michael Fuhr Cc: Josh Berkus , pgsql-performance@postgresql.org, Jean-Pierre Pelletier , John Arbash Meinel Subject: Re: Queries 15 times slower on 8.1 beta 2 than on 8.0 In-reply-to: <20050922225432.GA25103@winnie.fuhr.org> References: <433326A6.8010708@arbash-meinel.com> <200509221519.05555.josh@agliodbs.com> <20050922225432.GA25103@winnie.fuhr.org> Comments: In-reply-to Michael Fuhr message dated "Thu, 22 Sep 2005 16:54:32 -0600" Date: Thu, 22 Sep 2005 19:12:14 -0400 Message-ID: <16903.1127430734@sss.pgh.pa.us> From: Tom Lane X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, hits=0.006 required=5 tests=[AWL=0.006] X-Spam-Level: X-Archive-Number: 200509/262 X-Sequence-Number: 14570 Michael Fuhr writes: > I've created a simplified, self-contained test case for this: I see the problem --- I broke best_inner_indexscan() for some cases where the potential indexscan clause is an outer-join ON clause. regards, tom lane