Re: Dual core Opterons beating quad core Xeons? - Mailing list pgsql-performance

From Scott Marlowe
Subject Re: Dual core Opterons beating quad core Xeons?
Date
Msg-id dcc563d10712191114t55f4d12ava87b1894aca2a098@mail.gmail.com
Whole thread Raw
In response to Re: Dual core Opterons beating quad core Xeons?  ("Joshua D. Drake" <jd@commandprompt.com>)
Responses Re: Dual core Opterons beating quad core Xeons?
List pgsql-performance
On Dec 19, 2007 1:07 PM, Joshua D. Drake <jd@commandprompt.com> wrote:
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> Hash: SHA1
>
> On Wed, 19 Dec 2007 13:03:32 -0600
> "Scott Marlowe" <scott.marlowe@gmail.com> wrote:
>
>
> > > Actually this is not true. Although I have yet to test 8.3. It is
> > > pretty much common knowledge that after 8 cores the acceleration of
> > > performance drops with PostgreSQL...
> >
> > I thought Tom had played with some simple hacks that got the scaling
> > pretty close to linear for up to 16 cores earlier this year...
> >
>
> See.. have not tested 8.3 above and 8.2 is better than 8.1 etc...

Well, I'm not even sure if those got applied or were just Tom hacking
in the basement or, heck, my fevered imagination. :)

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