Re: Poor delete performance AFTER vacuum analyze

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: 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 04:44:51
Message-ID: 19929.1058676291@sss.pgh.pa.us
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"Jeremy M. Guthrie" <jeremy(dot)guthrie(at)berbee(dot)com> writes:
> My system will run great after a full vacuum(as I would expect). It will run
> all day long taking only 3-5 seconds to run and deal with approximately
> 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.

Could we see EXPLAIN ANALYZE for the deletion query in both the fast and
slow states?

regards, tom lane

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