Message-ID: <474F0FC3.4000109@archonet.com>
Date: Thu, 29 Nov 2007 19:15:15 +0000
From: Richard Huxton <dev@archonet.com>
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To: Alex Hochberger <alex@dsgi.us>
CC: pgsql-performance@postgresql.org
Subject: Re: Configuring a Large RAM PostgreSQL Server
References: <C78952BC-8F12-486E-9BD3-368EFAF448AD@dsgi.us>
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Alex Hochberger wrote:
> Does anyone have any white papers or basic guides for a large RAM server?
> 
> We are consolidating two databases to enable better data-mining that 
> currently run on a 4 GB and 2 GB machine.  The data issues on the 4 GB 
> machine are numerous, things like "create index" fail and update queries 
> fail from out of memory issues.

>    Problem Usage: we have a 20GB table with 120m rows that we are 
> splitting into some sub-tables.  Generally, we do large data pulls from 
> here, 1 million - 4 million records at a time, stored in a new table for 
> export.  These queries are problematic because we are unable to index 
> the database for the queries that we run because we get out of memory 
> errors.

Would it not make sense to find out why you are getting these errors first?

It's not normal to get "out of memory" when rebuilding an index.

-- 
   Richard Huxton
   Archonet Ltd