From: Ron Mayer <rm_pg@cheapcomplexdevices.com>
To: pgsql-performance@postgresql.org
Subject: Re: Dual core Opterons beating quad core Xeons?
Date: Wed, 19 Dec 2007 11:14:08 -0800
Message-ID: <fkbqho$1jsp$1@news.hub.org> (raw)
In-Reply-To: <20071219105921.07b45a36@commandprompt.com>
References: <476908BB.5090408@stuartbishop.net>
<Pine.GSO.4.64.0712191322410.29296@westnet.com>
<20071219105921.07b45a36@commandprompt.com>
Joshua D. Drake 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...
>
> This has gotten better every release. 8.1 for example handles 8 cores
> very well, 8.0 didn't and 7.4 well.... :)
I agree with the spirit of what you say, but are you overstating
things a bit?
Benchmarks I see[1] suggest that 8.1.2 scaled pretty reasonably to 16
cores (from the chart on page 9 in the link below). But yeah, 8.0
scaled to maybe 2 cores if you're lucky. :-)
Agree with the rest of the things you say, tho. It's getting
way better every recent release.
[1] http://www.pgcon.org/2007/schedule/attachments/22-Scaling%20PostgreSQL%20on%20SMP%20Architectures%20...
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To: pgsql-performance@postgresql.org
Cc: rm_pg@cheapcomplexdevices.com
Subject: Re: Dual core Opterons beating quad core Xeons?
In-Reply-To: <fkbqho$1jsp$1@news.hub.org>
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