Re: Question on Opteron performance

On Tue, 2004-03-09 at 21:01, Nick Barr wrote:
> Stephen Robert Norris wrote:
>
> >On Tue, 2004-03-09 at 14:50, Joseph Shraibman wrote:
> >
> >
> >>Stephen Robert Norris wrote:
> >>
> >>
> >>
> >>>Is this true? Did they really double the size of the memory bus, or is
> >>>it a case of 4 CPUs fighting for the same memory bandwidth that 2 had
> >>>before?
> >>>
> >>>
> >>>
> >>Opertons have built in memory controllers so they scale better than
> >>intel chips. See http://www.anandtech.com/IT/showdoc.html?i=1982
> >>
> >>
> >
> >I didn't realise that. Thanks for the pointer. We're going to be buying
> >some more servers soon, I should look at Opterons I guess...
> >
> >    Stephen
> >
> >
> And here is a nice pretty picture of the architecture of a 4 way Opteron.
>
> http://www.amd.com/us-en/assets/content_type/DownloadableAssets/AM190_briefv3.pdf
>
> I know which architecture I prefer, the one without a central hub.
> Whether the Opteron will perform well for PG I have no idea but we also
> are planning some 4 way Opteron boxes to beef up our data center. We
> will probably do some benchmarking on those bad boys when we get them
> and post it to pgsql-performance if anyone is interested.
>
> Nick

I'd be fascinated.

--
Stephen Norris      srn@fn.com.au
Farrow Norris Pty Ltd    +61 417 243 239