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 3BCE25376D for ; Thu, 21 Apr 2005 20:51:11 -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 22247-03 for ; Thu, 21 Apr 2005 23:51:08 +0000 (GMT) Received: from davinci.ethosmedia.com (server227.ethosmedia.com [209.128.84.227]) by svr1.postgresql.org (Postfix) with ESMTP id C608653488 for ; Thu, 21 Apr 2005 20:51:06 -0300 (ADT) X-EthosMedia-Virus-Scanned: no infections found Received: from [64.81.245.111] (account josh@agliodbs.com HELO temoku.sf.agliodbs.com) by davinci.ethosmedia.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 7265281; Thu, 21 Apr 2005 16:53:08 -0700 From: Josh Berkus Reply-To: josh@agliodbs.com Organization: Aglio Database Solutions To: Bill Chandler Subject: Re: Index bloat problem? Date: Thu, 21 Apr 2005 16:56:18 -0700 User-Agent: KMail/1.7.1 Cc: Mischa Sandberg , pgsql-perform References: <20050421225926.11937.qmail@web51404.mail.yahoo.com> In-Reply-To: <20050421225926.11937.qmail@web51404.mail.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200504211656.18324.josh@agliodbs.com> X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, hits=0.048 tagged_above=0 required=5 tests=AWL, FORGED_RCVD_HELO X-Spam-Level: X-Archive-Number: 200504/600 X-Sequence-Number: 11997 Bill, > If I deleted 75% of the rows but had a max_fsm_pages > setting that still exceeded the pages required (as > indicated in VACUUM output), would that solve my > indexing problem or would I still need to REINDEX > after such a purge? Depends on the performance you're expecting. The FSM relates the the re-use of nodes, not taking up free space. So after you've deleted 75% of rows, the index wouldn't shrink. It just wouldn't grow when you start adding rows. -- --Josh Josh Berkus Aglio Database Solutions San Francisco