Re: Dual core Opterons beating quad core Xeons?

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От Scott Marlowe
Тема Re: Dual core Opterons beating quad core Xeons?
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Msg-id dcc563d10712191114t55f4d12ava87b1894aca2a098@mail.gmail.com
обсуждение исходный текст
Ответ на Re: Dual core Opterons beating quad core Xeons?  ("Joshua D. Drake" <jd@commandprompt.com>)
Ответы Re: Dual core Opterons beating quad core Xeons?  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-performance
On Dec 19, 2007 1:07 PM, Joshua D. Drake <jd@commandprompt.com> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> 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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