X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (unknown [200.46.204.144]) by svr1.postgresql.org (Postfix) with ESMTP id 0B32953609 for ; Mon, 9 May 2005 12:22:17 -0300 (ADT) Received: from svr1.postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 36084-05 for ; Mon, 9 May 2005 15:22:09 +0000 (GMT) Received: from server07.icaen.uiowa.edu (server07.icaen.uiowa.edu [128.255.17.47]) by svr1.postgresql.org (Postfix) with ESMTP id 0AB4653604 for ; Mon, 9 May 2005 12:22:08 -0300 (ADT) Received: from server11.icaen.uiowa.edu (server11.icaen.uiowa.edu [128.255.17.51]) by server07.icaen.uiowa.edu (8.13.3/8.12.9) with ESMTP id j49FM7GG007458; (envelope-from ) Mon, 9 May 2005 10:22:07 -0500 (CDT) Received: from [192.168.1.11] (12-215-118-172.client.mchsi.com [12.215.118.172]) (authenticated user=jfmeinel) by server11.icaen.uiowa.edu (8.13.2/smtp-serv-1.7) with ESMTP id j49FM58h006766 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256); (envelope-from ) Mon, 9 May 2005 10:22:06 -0500 (CDT) Message-ID: <427F801B.7070601@arbash-meinel.com> Date: Mon, 09 May 2005 10:22:03 -0500 From: John A Meinel User-Agent: Mozilla Thunderbird 1.0.2-1.3.2 (X11/20050324) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Anjan Dave Cc: Geoffrey , Mischa Sandberg , pgsql-performance@postgresql.org Subject: Re: Whence the Opterons? References: <4BAFBB6B9CC46F41B2AD7D9F4BBAF7850989F3@vt-pe2550-001.vantage.vantage.com> In-Reply-To: <4BAFBB6B9CC46F41B2AD7D9F4BBAF7850989F3@vt-pe2550-001.vantage.vantage.com> X-Enigmail-Version: 0.89.6.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig68F584A6B6A3E6B4D551E210" X-Virus-Scanned: ClamAV version 0.83, clamav-milter version 0.83 on clamav.icaen.uiowa.edu X-Virus-Scanned: ClamAV version 0.83, clamav-milter version 0.83 on clamav.icaen.uiowa.edu X-Virus-Status: Clean X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, hits=0 tagged_above=0 required=5 tests= X-Spam-Level: X-Archive-Number: 200505/105 X-Sequence-Number: 12269 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig68F584A6B6A3E6B4D551E210 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Anjan Dave wrote: > You also want to consider any whitebox opteron system being on the > compatibility list of your storage vendor, as well as RedHat, etc. With > EMC you can file an RPQ via your sales contacts to get it approved, > though not sure how lengthy/painful that process might be, or if it's > gonna be worth it. > > Read the article devoted to the v40z on anandtech.com. > > I am also trying to get a quad-Opteron versus the latest quad-XEON from > Dell (6850), but it's hard to justify a difference between a 15K dell > versus a 30k v40z for a 5-8% performance gain (read the XEON Vs. Opteron > Database comparo on anandtech.com)... > > Thanks, > Anjan > 15k vs 30k is indeed a big difference. But also realize that Postgres has a specific benefit to Opterons versus Xeons. The context switching storm happens less on an Opteron for some reason. I would venture a much greater benefit than 5-8%, more like 10-50%. John =:-> --------------enig68F584A6B6A3E6B4D551E210 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iD8DBQFCf4AbJdeBCYSNAAMRAtESAJ0aYD5575f1F2b7vIbSY/wJaAPWTQCgt8oe 3gNXJoSGlAXNNPQQyNjk1zw= =fwp+ -----END PGP SIGNATURE----- --------------enig68F584A6B6A3E6B4D551E210--