Re: Performance question (PostgreSQL 7.1.3)

From: Jochem van Dieten <jochemd(at)oli(dot)tudelft(dot)nl>
To: Medve Gábor <GMedve(at)PGSM(dot)HU>
Cc: pgsql-novice(at)postgresql(dot)org
Subject: Re: Performance question (PostgreSQL 7.1.3)
Date: 2001-10-23 23:08:57
Message-ID: 3BD5F889.5030202@oli.tudelft.nl
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Medve Gábor wrote:

> Hi there,
>
> I have no experiences with big databases. Now I have a database that's size
> is appr. 7,6GB (HW/OS: Intel Pentium III 600MHz, 512MB RAM, GNU/Linux 2.2.19
> kernel). There is a big table in it with 25318267 tuples today. If I make a
> simple query (SELECT x,y,z FROM table WHERE x = something) then it takes
> 2m42s to get the results. Is it a good value?

I don't know, you tell me ;) How many results are exactly returned? Can
you run an EXPLAIN query? Did you VACUUM ANALYZE? Any indices defined on
"x"?

Jochem

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