| From: | Greg Smith <gsmith(at)gregsmith(dot)com> |
|---|---|
| To: | Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc> |
| Cc: | Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>, Merlin Moncure <mmoncure(at)gmail(dot)com>, Dave Youatt <dave(at)meteorsolutions(dot)com>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: hyperthreaded cpu still an issue in 8.4? |
| Date: | 2009-07-29 06:35:22 |
| Message-ID: | alpine.GSO.2.01.0907290229290.29351@westnet.com |
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| Lists: | pgsql-performance |
On Wed, 29 Jul 2009, Stefan Kaltenbrunner wrote:
> oh - the 90k tps are with the new multithreaded pgbench? missed that fact. As
> you can see from my results I managed to get 83k with the 8.4 pgbench on a
> slightly slower Nehalem which does not sound too impressive for the new
> code...
I got 96K with the default postgresql.conf - 32MB shared_buffers etc. -
and I didn't even try to find the sweet spot yet for things like number of
threads, that's just the first useful number that popped out. I saw as
much as 87K with the regular one too. I already planned to run the test
set you did for comparison sake at some point.
--
* Greg Smith gsmith(at)gregsmith(dot)com http://www.gregsmith.com Baltimore, MD
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