Re: PGSQL 7.4 -> 8.1 migration & performance problem

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Philippe Lang" <philippe(dot)lang(at)attiksystem(dot)ch>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: PGSQL 7.4 -> 8.1 migration & performance problem
Date: 2006-05-31 14:39:11
Message-ID: 12183.1149086351@sss.pgh.pa.us
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"Philippe Lang" <philippe(dot)lang(at)attiksystem(dot)ch> writes:
> http://www.attiksystem.ch/postgresql-general.txt

Please provide EXPLAIN ANALYZE, not just EXPLAIN, output ... and try to
post it in an un-line-wrapped form.

Also, as Ludwig mentioned, a common gotcha is to forget to ANALYZE your
data after moving it to a new database.

regards, tom lane

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