From: | "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com> |
---|---|
To: | Ron Mayer <rm_pg(at)cheapcomplexdevices(dot)com> |
Cc: | pgsql-performance(at)postgresql(dot)org |
Subject: | Re: Dual core Opterons beating quad core Xeons? |
Date: | 2007-12-19 20:02:57 |
Message-ID: | 20071219120257.32d1fc50@commandprompt.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-performance |
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On Wed, 19 Dec 2007 11:14:08 -0800
Ron Mayer <rm_pg(at)cheapcomplexdevices(dot)com> wrote:
> 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?
My point was :)... which that PDF actually illustrates is the gain
between say 2 cores and 8 cores is greater than 8 and 16 and even
less when you go beyond 16.
>
> 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. :-)
I really need to check this test out more though because their numbers
don't reflect mine. I wonder if that is per connection.
Sincerely,
Joshua D. Drake
- --
The PostgreSQL Company: Since 1997, http://www.commandprompt.com/
Sales/Support: +1.503.667.4564 24x7/Emergency: +1.800.492.2240
Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate
SELECT 'Training', 'Consulting' FROM vendor WHERE name = 'CMD'
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)
iD4DBQFHaXjxATb/zqfZUUQRAhlyAJijNIytenaBH2c5mEivFCT4qRmPAKCiW7Qn
2CDwNUBNd463Kz7G6n68yA==
=bnaL
-----END PGP SIGNATURE-----
From | Date | Subject | |
---|---|---|---|
Next Message | Greg Smith | 2007-12-19 20:31:22 | Re: Dual core Opterons beating quad core Xeons? |
Previous Message | Scott Marlowe | 2007-12-19 19:14:37 | Re: Dual core Opterons beating quad core Xeons? |