Re: Opteron vs. Xeon performance differences

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От Scott Marlowe
Тема Re: Opteron vs. Xeon performance differences
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Msg-id dcc563d10810100650j2d2d8fcsfac67ae0e808d0f8@mail.gmail.com
обсуждение исходный текст
Ответ на Opteron vs. Xeon performance differences  (Bart Grantham <bg@logicworks.net>)
Ответы Re: Opteron vs. Xeon performance differences  ("postgres Emanuel CALVO FRANCO" <postgres.arg@gmail.com>)
Список pgsql-general
On Thu, Oct 9, 2008 at 3:34 PM, Bart Grantham <bg@logicworks.net> wrote:
> Forgive me if this has been beaten into the ground, but my team and I
> couldn't find much conclusive study or posts on this issue.  To make a long
> story short: we're experiencing Xeons as 50% slower than Opterons, even when
> the Xeon has twice as much cache and a slight clock speed advantage.

I'm not sure what causes this issue either, although I suspect it's
the inter-CPU / CPU to memory communication speeds that make the
difference.  It seems that as the number of CPUs increase, the opteron
lead increases over the xeon.

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