Received: from localhost (maia-4.hub.org [200.46.204.183]) by postgresql.org (Postfix) with ESMTP id DFA959FB2DE for ; Sat, 31 Mar 2007 08:41:33 -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 20529-08 for ; Sat, 31 Mar 2007 08:41:30 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.4 Received: from vms040pub.verizon.net (vms040pub.verizon.net [206.46.252.40]) by postgresql.org (Postfix) with ESMTP id CA0B39FB2D8 for ; Sat, 31 Mar 2007 08:41:30 -0300 (ADT) Received: from osgiliath.mathom.us ([72.66.31.15]) by vms040.mailsrvcs.net (Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006)) with ESMTPA id <0JFR006ZJN4L5UP4@vms040.mailsrvcs.net> for pgsql-performance@postgresql.org; Sat, 31 Mar 2007 06:41:10 -0500 (CDT) Received: from localhost (localhost [127.0.0.1]) by osgiliath.mathom.us (Postfix) with ESMTP id 1D8191F82A for ; Sat, 31 Mar 2007 07:41:08 -0400 (EDT) Received: from osgiliath.mathom.us ([127.0.0.1]) by localhost (osgiliath.home.mathom.us [127.0.0.1]) (amavisd-new, port 10024) with LMTP id upXVmbVwoMhP for ; Sat, 31 Mar 2007 07:41:07 -0400 (EDT) Received: by osgiliath.mathom.us (Postfix, from userid 1000) id 3DC8D1F81C; Sat, 31 Mar 2007 07:41:07 -0400 (EDT) Date: Sat, 31 Mar 2007 07:41:06 -0400 From: Michael Stone Subject: Re: scalablility problem In-reply-to: <54F3EA5A-EFB0-4537-9344-EA929BC9C4E8@event-s.net> To: pgsql-performance@postgresql.org Mail-followup-to: pgsql-performance@postgresql.org Message-id: <20070331114104.GD11402@mathom.us> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii; format=flowed Content-disposition: inline X-Virus-Scanned: Debian amavisd-new at mathom.us X-Pgp-Fingerprint: 53 FF 38 00 E7 DD 0A 9C 84 52 84 C5 EE DF 7C 88 References: <460D7220.9010302@cse.ohio-state.edu> <874po2tdlx.fsf@wolfe.cbbrowne.com> <54F3EA5A-EFB0-4537-9344-EA929BC9C4E8@event-s.net> User-Agent: Mutt/1.5.13 (2006-08-11) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200703/464 X-Sequence-Number: 23869 On Fri, Mar 30, 2007 at 10:00:30PM -0600, Guido Neitzer wrote: >On 30.03.2007, at 19:18, Christopher Browne wrote: >>2. There are known issues with the combination of Xeon processors and >>PAE memory addressing; that sort of hardware tends to be *way* less >>speedy than the specs would suggest. > >That is not true as the current series of processors (Woodcrest and >the like) are also called Xeon. You probably mean the Pentium IV era >Xeons. Well, the newer ones can address large amounts of memory directly, without using PAE, but the original comment was correct--PAE is slow regardless of what processor implements it. Mike Stone