From: Joshua D. Drake <jd@commandprompt.com>
To: Scott Marlowe <scott.marlowe@gmail.com>
Cc: Greg Smith <gsmith@gregsmith.com>
Cc: Stuart Bishop <stuart@stuartbishop.net>
Cc: pgsql-performance@postgresql.org
Subject: Re: Dual core Opterons beating quad core Xeons?
Date: Wed, 19 Dec 2007 11:07:44 -0800
Message-ID: <20071219110744.32f9192a@commandprompt.com> (raw)
In-Reply-To: <dcc563d10712191103p1224b6c2vc51f70a85fae5c49@mail.gmail.com>
References: <476908BB.5090408@stuartbishop.net>
<Pine.GSO.4.64.0712191322410.29296@westnet.com>
<20071219105921.07b45a36@commandprompt.com>
<dcc563d10712191103p1224b6c2vc51f70a85fae5c49@mail.gmail.com>
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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...
Sincerely,
Joshua D. Drake
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To: pgsql-performance@postgresql.org
Cc: jd@commandprompt.com, scott.marlowe@gmail.com, gsmith@gregsmith.com, stuart@stuartbishop.net
Subject: Re: Dual core Opterons beating quad core Xeons?
In-Reply-To: <20071219110744.32f9192a@commandprompt.com>
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