I would suggest simply doing an EXPLAIN on your query and examining the
output. It will tell you whether your index is being used or not. That's
a big first step in determining what your optimal performance expectations
should be.
Marc Mitchell - Senior Application Architect
Enterprise Information Solutions, Inc.
4910 Main Street
Downers Grove, IL 60515
(630) 512-0570
marcm@eisolution.com
----- Original Message -----
From: "Derek Hamilton" <derek@capweb.com>
To: <pgsql-admin@postgresql.org>
Sent: Friday, April 18, 2003 1:24 PM
Subject: [ADMIN] Performance Expectations
> Hello all,
>
> We're using PostgresQL with a fairly large database (about 2GB). I have
one
> table that currently exceeds 4.5 million records and will probably grow
to
> well over 5 fairly soon. The searching of this table is basically done
on
> one field, which field I have set up a btree index on. My question is,
if I
> search this table and get the results back in about 6-7 seconds is that
> pretty good, not so good...? What are the things I should look at in
> determining the performance on this?
>
> BTW, forgive the lack of information. I'd be happy to post more info on
the
> table, hardware, etc. I just didn't want to overwhelm the initial
question.
>
> Thanks,
> Derek Hamilton
>
>
> ---------------------------(end of broadcast)---------------------------
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