Received: from localhost (unknown [200.46.204.182]) by postgresql.org (Postfix) with ESMTP id 267589F9605 for ; Fri, 9 Nov 2007 12:41:07 -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 97864-01 for ; Fri, 9 Nov 2007 12:40:50 -0400 (AST) Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.185]) by postgresql.org (Postfix) with ESMTP id A9CF89F94A0 for ; Fri, 9 Nov 2007 12:40:56 -0400 (AST) Received: by nf-out-0910.google.com with SMTP id f5so409629nfh for ; Fri, 09 Nov 2007 08:40:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=WEtnCPeJBbzksrNYGTvWSoyku4MFbaD9Eio867n0r3M=; b=H5cP04lgd1eLxLaUJrvd3aj74YIiCZzHiDKgso29fFh7phhW8WKHzYK4ti3fV5pN4GDibHRImo/tlRtqWQN1bwyZfQwhTIsOirpudvkHObPp0Tiumqad2KeW8fRNgIMr6/Xd/pBWzR7/RDgfDE6CNB/5ldtYEPB/h+oNVCNwpbc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=KpZimF2TJ6sy0UD/zsOCYiwEofl8zaH1aYXejIs2L8VySUYBmF6HRBWATUBtDQKJ1J2Xqm4sNwIoshHKyBoN4w0Gsj9VCwZ1F93PNLY6xAi7fllWpZaRIrhL2IaMF1iKRGFA81vQEXkHaSpD5RU31vkYC0qdIhSqlL2P7tn29V4= Received: by 10.78.183.15 with SMTP id g15mr2613559huf.1194626450803; Fri, 09 Nov 2007 08:40:50 -0800 (PST) Received: by 10.78.146.10 with HTTP; Fri, 9 Nov 2007 08:40:50 -0800 (PST) Message-ID: Date: Fri, 9 Nov 2007 17:40:50 +0100 From: "Claus Guttesen" To: "Jurgen Haan" Subject: Re: dell versus hp Cc: "Tore Halset" , pgsql-performance@postgresql.org In-Reply-To: <47348444.6000700@easyflex.nl> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <82607932-FC46-4B73-BF78-2290EE55F7F5@pvv.ntnu.no> <47348444.6000700@easyflex.nl> X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200711/142 X-Sequence-Number: 27557 > Apart from the disks, you might also investigate using Opterons instead > of Xeons. there appears to be some significant dent in performance > between Opteron and Xeon. Xeons appear to spend more time in passing > around ownership of memory cache lines in case of a spinlock. > It's not yet clear whether or not here has been worked around the issue. > You should at least investigate it a bit. > > We're using a HP DL385 ourselves which performs quite well. Not atm. Until new benchmarks are published comparing AMD's new quad-core with Intel's ditto, Intel has the edge. http://tweakers.net/reviews/657/6 -- regards Claus When lenity and cruelty play for a kingdom, the gentlest gamester is the soonest winner. Shakespeare