| From: | Ron Mayer <rm_pg(at)cheapcomplexdevices(dot)com> |
|---|---|
| To: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Dual core Opterons beating quad core Xeons? |
| Date: | 2007-12-19 19:14:08 |
| Message-ID: | fkbqho$1jsp$1@news.hub.org |
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| Lists: | pgsql-performance |
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.
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