From: Tom Lane <tgl@sss.pgh.pa.us>
To: markus@m-bass.com
Cc: pgsql-performance@postgresql.org
Subject: Re: Reindex - Is this necessary after a vacuum?
Date: Tue, 25 Oct 2005 10:27:08 -0400
Message-ID: <13827.1130250428@sss.pgh.pa.us> (raw)
In-Reply-To: <20051025135607.39805.qmail@web31615.mail.mud.yahoo.com>
References: <20051025135607.39805.qmail@web31615.mail.mud.yahoo.com>
Markus Benne <thing@m-bass.com> writes:
> Our table in question is vacuumed every 4 minutes, and
> we are reindexing after each one.
That's pretty silly. You might need a reindex once in awhile, but
not every time you vacuum.
The draft 8.1 docs contain some discussion of possible reasons for
periodic reindexing:
http://developer.postgresql.org/docs/postgres/routine-reindex.html
but none of these reasons justify once-per-vacuum reindexes.
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, markus@m-bass.com
Subject: Re: Reindex - Is this necessary after a vacuum?
In-Reply-To: <13827.1130250428@sss.pgh.pa.us>
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