From: Scott Marlowe <scott.marlowe@gmail.com>
To: Claus Guttesen <kometen@gmail.com>
Cc: Jurgen Haan <jurgen@easyflex.nl>
Cc: Tore Halset <halset@pvv.ntnu.no>
Cc: pgsql-performance@postgresql.org
Subject: Re: dell versus hp
Date: Fri, 9 Nov 2007 10:55:45 -0600
Message-ID: <dcc563d10711090855j42ce308co1bbbe103ff04c706@mail.gmail.com> (raw)
In-Reply-To: <b41c75520711090840n31114fa8ldf2eb1bd31161205@mail.gmail.com>
References: <82607932-FC46-4B73-BF78-2290EE55F7F5@pvv.ntnu.no>
<47348444.6000700@easyflex.nl>
<b41c75520711090840n31114fa8ldf2eb1bd31161205@mail.gmail.com>
On Nov 9, 2007 10:40 AM, Claus Guttesen <kometen@gmail.com> wrote:
> > 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
For 8 cores, it appears AMD has the lead, read this (stolen from
another thread):
http://people.freebsd.org/~kris/scaling/7.0%20Preview.pdf
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To: pgsql-performance@postgresql.org
Cc: scott.marlowe@gmail.com, kometen@gmail.com, jurgen@easyflex.nl, halset@pvv.ntnu.no
Subject: Re: dell versus hp
In-Reply-To: <dcc563d10711090855j42ce308co1bbbe103ff04c706@mail.gmail.com>
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