Received: from localhost (maia-1.hub.org [200.46.204.191]) by postgresql.org (Postfix) with ESMTP id 1F3B29FB641; Thu, 25 Jan 2007 12:33:39 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.191]) (amavisd-new, port 10024) with ESMTP id 86772-08; Thu, 25 Jan 2007 12:33:29 -0400 (AST) X-Greylist: from auto-whitelisted by SQLgrey-1.7.4 X-Greylist: from auto-whitelisted by SQLgrey-1.7.4 Received: from locust.cns.vt.edu (locust.cns.vt.edu [198.82.169.14]) by postgresql.org (Postfix) with ESMTP id 827479FB4DF; Thu, 25 Jan 2007 12:33:29 -0400 (AST) Received: by locust.cns.vt.edu (Postfix, from userid 986) id 17989118A32; Thu, 25 Jan 2007 11:33:29 -0500 (EST) Date: Thu, 25 Jan 2007 11:33:29 -0500 From: Ray Stell To: "Joshua D. Drake" Cc: "Jim C. Nasby" , Galy Lee , pgsql-performance@postgresql.org, Hackers Subject: Re: [HACKERS] how to plan for vacuum? Message-ID: <20070125163329.GD19599@cns.vt.edu> References: <45B6F0A8.1050705@oss.ntt.co.jp> <20070125033917.GD64372@nasby.net> <20070125035202.GI26006@alvh.no-ip.org> <45B8D521.8010405@commandprompt.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <45B8D521.8010405@commandprompt.com> User-Agent: Mutt/1.5.11 X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200701/372 X-Sequence-Number: 22973 On Thu, Jan 25, 2007 at 08:04:49AM -0800, Joshua D. Drake wrote: > > It really depends on the system. Most of our systems run anywhere from > 10-25ms. I find that any more than that, Vacuum takes too long. How do you measure the impact of setting it to 12 as opposed to 15?