Re: Poor delete performance AFTER vacuum analyze

From: Dennis Björklund <db(at)zigo(dot)dhs(dot)org>
To: "Jeremy M(dot) Guthrie" <jeremy(dot)guthrie(at)berbee(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Poor delete performance AFTER vacuum analyze
Date: 2003-07-20 05:42:07
Message-ID: Pine.LNX.4.44.0307200738560.4146-100000@zigo.dhs.org
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On Sat, 19 Jul 2003, Jeremy M. Guthrie wrote:

> 100megs of new data each day. However, the instant the system finishes only
> a 'vacuum analyze', the whole thing slows WAY down to where each run can take
> 10-15 minutes.

Have you run EXPLAIN ANALYZE on the delete query before and after the
vacuum? Does it explain why it goes slower?

--
/Dennis

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