Received: from localhost (unknown [200.46.204.182]) by postgresql.org (Postfix) with ESMTP id 48B492E2D6C for ; Tue, 11 Dec 2007 18:27:59 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.182]) (amavisd-maia, port 10024) with ESMTP id 79503-04 for ; Tue, 11 Dec 2007 18:27:51 -0400 (AST) Received: from lists.commandprompt.com (host-159.commandprompt.net [207.173.203.159]) by postgresql.org (Postfix) with ESMTP id DE6152E2D5B for ; Tue, 11 Dec 2007 18:27:54 -0400 (AST) Received: from perhan.alvh.no-ip.org (200-126-76-117.bk5-dsl.surnet.cl [200.126.76.117]) (authenticated bits=0) by lists.commandprompt.com (8.13.8/8.13.8) with ESMTP id lBBMRoBT024255 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 11 Dec 2007 14:27:52 -0800 Received: by perhan.alvh.no-ip.org (Postfix, from userid 1000) id CE5F247C87; Tue, 11 Dec 2007 19:27:48 -0300 (CLST) Date: Tue, 11 Dec 2007 19:27:48 -0300 From: Alvaro Herrera To: kelvan Cc: pgsql-performance@postgresql.org Subject: Re: database tuning Message-ID: <20071211222748.GA31196@alvh.no-ip.org> References: <1197016760.4255.474.camel@ebony.site> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.0 (lists.commandprompt.com [207.173.203.159]); Tue, 11 Dec 2007 14:27:53 -0800 (PST) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200712/151 X-Sequence-Number: 27967 kelvan wrote: I wonder where did all the punctuation symbols on your keyboard went. Your email is amazingly hard to read. > overhead information i would to know is row overheads column overheads and > header overheads for blocks and anything else i have missed As for storage overhead, see here: http://www.postgresql.org/docs/8.3/static/storage-page-layout.html -- Alvaro Herrera http://www.amazon.com/gp/registry/DXLWNGRJD34J "Siempre hay que alimentar a los dioses, aunque la tierra esté seca" (Orual)