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Re: Performance problem on RH7.1

From: Alvaro Herrera <alvherre(at)dcc(dot)uchile(dot)cl>
To: Együd Csaba <csegyud(at)vnet(dot)hu>
Cc: "Pgsql-General(at)Postgresql(dot)Org (E-mail)" <pgsql-general(at)postgresql(dot)org>
Subject: Re: Performance problem on RH7.1
Date: 2004-06-27 01:37:45
Message-ID: 20040627013745.GB8513@dcc.uchile.cl (view raw or flat)
Thread:
Lists: pgsql-general
On Sat, Jun 26, 2004 at 12:16:17PM +0200, Együd Csaba wrote:

> I've a problem with the perfprmance of the production environment.
> I've two db servers. One on my laptop computer (2Ghz, 1GB, WinXP, Cygwin,
> Postgres 7.3.4) and one on a production server (2GHz, 1GB, Ultra SCSI,
> RH7.1, Postgres 7.3.2).
> 
> I run the same dump and the same query on both of the computers. The
> difference is substantial.
> The query takes 5 times longer on the production server then on the laptop.

Are both databases properly vacuumed?  Did you try a VACUUM FULL?  I'm
wondering why it takes a lot of time seqscanning the t_products table in
the production server compared to the laptop.

-- 
Alvaro Herrera (<alvherre[a]dcc.uchile.cl>)
"Hoy es el primer día del resto de mi vida"


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