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Re: bad performances using hashjoin

From: David Brown <time(at)bigpond(dot)net(dot)au>
To: Gaetano Mendola <pgsql-performance(at)postgresql(dot)org>
Subject: Re: bad performances using hashjoin
Date: 2005-02-21 14:03:03
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance
Gaetano Mendola wrote:

>I think is due the fact that first queries were performed in peakhours.
A memory intensive operation takes 7.5 times longer during heavy loads.
Doesn't this suggest that swapping of working memory is occurring?

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Subject: Re: seq scan cache vs. index cache smackdown
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