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Re: Will Postgres ever lock with read only queries?

From: Chris <dmagick(at)gmail(dot)com>
To: Robert James <srobertjames(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Will Postgres ever lock with read only queries?
Date: 2009-07-28 22:36:12
Message-ID: 4A6F7D5C.9050301@gmail.com (view raw or flat)
Thread:
Lists: pgsql-performance
Robert James wrote:
> Thanks for the replies.  I'm running Postgres 8.2 on Windows XP, Intel 
> Core Duo (though Postgres seems to use only one 1 core).

A single query can only use one core, but it will use both if multiple 
queries come in.

> The queries are self joins on very large tables, with lots of nested loops.

If you want help optimizing them, you'll need to send through
- explain analyze
- table definitions
and of course
- the query itself

-- 
Postgresql & php tutorials
http://www.designmagick.com/

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