X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (unknown [200.46.204.144]) by svr1.postgresql.org (Postfix) with ESMTP id A783152938 for ; Wed, 17 Aug 2005 11:52:46 -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 15317-02 for ; Wed, 17 Aug 2005 14:52:45 +0000 (GMT) Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130]) by svr1.postgresql.org (Postfix) with ESMTP id AEEB6528E6 for ; Wed, 17 Aug 2005 11:52:44 -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 j7HEqmF4018976; Wed, 17 Aug 2005 10:52:49 -0400 (EDT) To: Ulrich Wisser Cc: pgsql-performance@postgresql.org Subject: Re: Need for speed In-reply-to: <4303003B.3020407@relevanttraffic.se> References: <4303003B.3020407@relevanttraffic.se> Comments: In-reply-to Ulrich Wisser message dated "Wed, 17 Aug 2005 11:15:39 +0200" Date: Wed, 17 Aug 2005 10:52:48 -0400 Message-ID: <18975.1124290368@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: 200508/204 X-Sequence-Number: 13951 Ulrich Wisser writes: > My machine has 2GB memory, please find postgresql.conf below. > max_fsm_pages = 50000 # min max_fsm_relations*16, 6 bytes each FWIW, that index I've been groveling through in connection with your other problem contains an astonishingly large amount of dead space --- almost 50%. I suspect that you need a much larger max_fsm_pages setting, and possibly more-frequent vacuuming, in order to keep a lid on the amount of wasted space. regards, tom lane