Received: from localhost (unknown [200.46.204.183]) by postgresql.org (Postfix) with ESMTP id 3F9989FB82A for ; Fri, 31 Aug 2007 15:47:51 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 83806-03-2 for ; Fri, 31 Aug 2007 15:47:47 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.5 Received: from lists.commandprompt.com (host-254.commandprompt.net [207.173.203.254]) by postgresql.org (Postfix) with ESMTP id 6242C9FB888 for ; Fri, 31 Aug 2007 15:47:46 -0300 (ADT) Received: from perhan.alvh.no-ip.org (201-220-104-109.bk9-dsl.surnet.cl [201.220.104.109]) (authenticated bits=0) by lists.commandprompt.com (8.13.7/8.13.6) with ESMTP id l7VIlkgm028956; Fri, 31 Aug 2007 11:47:47 -0700 Received: by perhan.alvh.no-ip.org (Postfix, from userid 1000) id 2696A47C5F; Fri, 31 Aug 2007 14:47:44 -0400 (CLT) Date: Fri, 31 Aug 2007 14:47:44 -0400 From: Alvaro Herrera To: Mikko Partio Cc: Pallav Kalva , Tom Lane , pgsql-performance@postgresql.org Subject: Re: 8.2 Autovacuum BUG ? Message-ID: <20070831184744.GK8046@alvh.no-ip.org> References: <46D83427.60001@livedatagroup.com> <25038.1188574775@sss.pgh.pa.us> <46D83C50.3040409@livedatagroup.com> <20070831161158.GD8046@alvh.no-ip.org> <2ca799770708311131r5ae5e3eera66a7cea1fc5917d@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <2ca799770708311131r5ae5e3eera66a7cea1fc5917d@mail.gmail.com> User-Agent: Mutt/1.5.16 (2007-06-11) X-Virus-Scanned: ClamAV 0.91.1/4110/Thu Aug 30 16:49:40 2007 on projects.commandprompt.com X-Virus-Status: Clean X-Greylist: Sender succeded SMTP AUTH authentication, not delayed by milter-greylist-1.6 (lists.commandprompt.com [192.168.2.159]); Fri, 31 Aug 2007 11:47:47 -0700 (PDT) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200708/405 X-Sequence-Number: 26535 Mikko Partio escribió: > Off-topic question: the documentation says that XID numbers are 32 bit. > Could the XID be 64 bit when running on a 64 bit platform? That would > effectively prevent wrap-around issues. No, because they would take too much space in tuple headers. -- Alvaro Herrera http://www.amazon.com/gp/registry/5ZYLFMCVHXC Al principio era UNIX, y UNIX habló y dijo: "Hello world\n". No dijo "Hello New Jersey\n", ni "Hello USA\n".