From: John A Meinel <john@arbash-meinel.com>
To: Anjan Dave <adave@vantage.com>
Cc: Geoffrey <esoteric@3times25.net>
Cc: Mischa Sandberg <mischa.sandberg@telus.net>
Cc: pgsql-performance@postgresql.org
Subject: Re: Whence the Opterons?
Date: Mon, 09 May 2005 10:22:03 -0500
Message-ID: <427F801B.7070601@arbash-meinel.com> (raw)
In-Reply-To: <4BAFBB6B9CC46F41B2AD7D9F4BBAF7850989F3@vt-pe2550-001.vantage.vantage.com>
References: <4BAFBB6B9CC46F41B2AD7D9F4BBAF7850989F3@vt-pe2550-001.vantage.vantage.com>
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
=:->
Attachments:
signature.asc (application/pgp-signature, 250B) download
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: john@arbash-meinel.com, adave@vantage.com, esoteric@3times25.net, mischa.sandberg@telus.net
Subject: Re: Whence the Opterons?
In-Reply-To: <427F801B.7070601@arbash-meinel.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox