Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1U9Huj-00009Z-3O for pgsql-bugs@arkaria.postgresql.org; Sat, 23 Feb 2013 16:25:29 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.72) (envelope-from ) id 1U9Hui-00069e-J2 for pgsql-bugs@arkaria.postgresql.org; Sat, 23 Feb 2013 16:25:28 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1U9Huh-00069Y-OO for pgsql-bugs@postgresql.org; Sat, 23 Feb 2013 16:25:27 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by magus.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1U9Hug-0000z7-3v for pgsql-bugs@postgresql.org; Sat, 23 Feb 2013 16:25:27 +0000 Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1]) by sss.pgh.pa.us (8.14.5/8.14.5) with ESMTP id r1NGPOdC002934; Sat, 23 Feb 2013 11:25:24 -0500 (EST) From: Tom Lane To: Jeff Janes cc: Claude Speed , "pgsql-bugs@postgresql.org" Subject: Re: new BUG: "postgresql 9.2.3: very long query time" In-reply-to: References: <5124D2BE.5090001@gmail.com> <5015.1361558088@sss.pgh.pa.us> Comments: In-reply-to Jeff Janes message dated "Sat, 23 Feb 2013 08:02:44 -0800" Date: Sat, 23 Feb 2013 11:25:24 -0500 Message-ID: <2933.1361636724@sss.pgh.pa.us> X-Pg-Spam-Score: -2.6 (--) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-bugs Precedence: bulk Sender: pgsql-bugs-owner@postgresql.org Jeff Janes writes: > On Friday, February 22, 2013, Tom Lane wrote: >> Try increasing from_collapse_limit to 11 or more. > I've increased it to 20 and still no luck. Huh --- that improved the results for me. > I've stripped it down to this: I'm not sure if that's exactly the same issue the OP is hitting, but will take a look at it. Thanks for the simpler test case. regards, tom lane -- Sent via pgsql-bugs mailing list (pgsql-bugs@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-bugs