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To: Kim <kim@myemma.com>
cc: pgsql-performance@postgresql.org
Subject: Re: unusual performance for vac following 8.2 upgrade 
In-reply-to: <45A671CD.1050706@myemma.com> 
References: <45A671CD.1050706@myemma.com>
Comments: In-reply-to Kim <kim@myemma.com>
	message dated "Thu, 11 Jan 2007 11:20:13 -0600"
Date: Thu, 11 Jan 2007 13:20:52 -0500
Message-ID: <27939.1168539652@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
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Kim <kim@myemma.com> writes:
> size of pg_class: 535,226
> number of relations: 108,694

Oh, I shoulda read all the way to the bottom of your email :-(.  What
version of PG were you running before?  I would think that pretty much
any version of pgstat_vacuum_tabstats would have had a performance issue
with pg_class that large.  Also, could we see

	select relkind, count(*) from pg_class group by relkind;

			regards, tom lane