| From: | Greg Smith <gsmith(at)gregsmith(dot)com> |
|---|---|
| To: | Lionel <lionel(at)art-informatique(dot)com> |
| Cc: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Which hardware ? |
| Date: | 2008-06-17 21:15:14 |
| Message-ID: | Pine.GSO.4.64.0806171710340.9151@westnet.com |
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| Lists: | pgsql-performance |
On Tue, 17 Jun 2008, Lionel wrote:
> I did some test with a 20 millions lines database on a single disk dual core
> 2GB win XP system (default postgresql config), most of the time is spent in
> I/O: 50-100 secs for statements that scan 6 millions of lines, which will
> happen. Almost no CPU activity.
I hope you're aware that the default config is awful, and there are all
sorts of possible causes for heavy I/O churn that might improve if you
setup the postgresql.conf file to use the server's resources more
aggressively (the default is setup for machines with a very small amount
of RAM). There are lots of links to articles that cover the various areas
you might improve at
http://wiki.postgresql.org/wiki/Performance_Optimization
--
* Greg Smith gsmith(at)gregsmith(dot)com http://www.gregsmith.com Baltimore, MD
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