X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (mx1.hub.org [200.46.208.251]) by postgresql.org (Postfix) with ESMTP id D4BEA9FA5DC for ; Thu, 1 Jun 2006 12:06:03 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.208.251]) (amavisd-new, port 10024) with ESMTP id 16685-06 for ; Thu, 1 Jun 2006 12:05:59 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey- Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130]) by postgresql.org (Postfix) with ESMTP id 5C4079FA040 for ; Thu, 1 Jun 2006 12:05:57 -0300 (ADT) Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1]) by sss.pgh.pa.us (8.13.6/8.13.6) with ESMTP id k51F5t1f012385; Thu, 1 Jun 2006 11:05:55 -0400 (EDT) To: Antoine cc: pgsql-performance@postgresql.org Subject: Re: vacuuming problems continued In-reply-to: <92d3a4950606010454y67293765o56001e8996975b45@mail.gmail.com> References: <92d3a4950606010454y67293765o56001e8996975b45@mail.gmail.com> Comments: In-reply-to Antoine message dated "Thu, 01 Jun 2006 13:54:08 +0200" Date: Thu, 01 Jun 2006 11:05:55 -0400 Message-ID: <12384.1149174355@sss.pgh.pa.us> From: Tom Lane X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200606/4 X-Sequence-Number: 19361 Antoine writes: > We just don't seem to be getting much benefit from autovacuum. Running > a manual vacuum seems to still be doing a LOT, which suggests to me > that I should either run a cron job and disable autovacuum, or just > run a cron job on top of autovacuum. The default autovac parameters are very unaggressive --- have you experimented with changing them? Do you have the FSM set large enough? regards, tom lane