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 D847052812 for ; Tue, 21 Jun 2005 14:11:52 -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 57604-04 for ; Tue, 21 Jun 2005 17:11:47 +0000 (GMT) Received: from davinci.ethosmedia.com (server227.ethosmedia.com [209.128.84.227]) by svr1.postgresql.org (Postfix) with ESMTP id E942052833 for ; Tue, 21 Jun 2005 14:11:41 -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 7512446; Tue, 21 Jun 2005 10:13:48 -0700 From: Josh Berkus Reply-To: josh@agliodbs.com Organization: Aglio Database Solutions To: Alex Stapleton Subject: Re: autovacuum suggestions for 500,000,000+ row tables? Date: Tue, 21 Jun 2005 10:13:40 -0700 User-Agent: KMail/1.8 Cc: pgsql-performance@postgresql.org References: <200506201046.42062.josh@agliodbs.com> <7E161634-29A0-4DBC-A303-3675D705A965@advfn.com> In-Reply-To: <7E161634-29A0-4DBC-A303-3675D705A965@advfn.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200506211013.40993.josh@agliodbs.com> X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, hits=0.045 tagged_above=0 required=5 tests=AWL, FORGED_RCVD_HELO X-Spam-Level: X-Archive-Number: 200506/403 X-Sequence-Number: 13040 Alex, > Downtime is something I'd rather avoid if possible. Do you think we > will need to run VACUUM FULL occasionally? I'd rather not lock tables > up unless I cant avoid it. We can probably squeeze an automated > vacuum tied to our data inserters every now and then though. As long as your update/deletes are less than 10% of the table for all time, you should never have to vacuum, pending XID wraparound. > Is this an 8.0 thing? I don't have a pg_controldata from what I can > see. Thats nice to hear though. 'fraid so, yes. -- --Josh Josh Berkus Aglio Database Solutions San Francisco