| From: | "Medora Schauer" <mschauer(at)fairfield(dot)com> |
|---|---|
| To: | <josh(at)agliodbs(dot)com>, "postgresql" <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: slow select |
| Date: | 2003-10-22 21:16:08 |
| Message-ID: | 906E2C446A276048A1BE283F17BCB12CDB4230@encounter.fairind.fairfield.com |
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| Lists: | pgsql-performance |
Josh,
> > So why did were the indices not used before when they yield
> a better plan?
>
> Your .conf settings, most likely. I'd lower your
> random_page_cost and raise
> your effective_cache_size.
Increasing effective_cache_size to 10000 did it. The query now
takes 4 secs. I left random_page_cost at the default value of 4.
I thought, mistakenly apparently, that our database was relatively
itty bitty and so haven't messed with the .conf file. Guess I
better take a look at all the settings (I know where the docs are).
Thanks for your help,
Medora
***********************************************************************
Medora Schauer
Sr. Software Engineer
Fairfield Industries
***********************************************************************
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