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Re: Dual core Opterons beating quad core Xeons?

From: "Scott Marlowe" <scott(dot)marlowe(at)gmail(dot)com>
To: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>
Cc: "Greg Smith" <gsmith(at)gregsmith(dot)com>, "Stuart Bishop" <stuart(at)stuartbishop(dot)net>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Dual core Opterons beating quad core Xeons?
Date: 2007-12-19 19:14:37
Message-ID: dcc563d10712191114t55f4d12ava87b1894aca2a098@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-performance
On Dec 19, 2007 1:07 PM, Joshua D. Drake <jd(at)commandprompt(dot)com> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On Wed, 19 Dec 2007 13:03:32 -0600
> "Scott Marlowe" <scott(dot)marlowe(at)gmail(dot)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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Next:From: Joshua D. DrakeDate: 2007-12-19 20:02:57
Subject: Re: Dual core Opterons beating quad core Xeons?
Previous:From: Ron MayerDate: 2007-12-19 19:14:08
Subject: Re: Dual core Opterons beating quad core Xeons?

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