From: Tom Lane <tgl@sss.pgh.pa.us>
To: Michael Riess <mlriess@gmx.de>
Cc: pgsql-performance@postgresql.org
Subject: Re: Autovacuum / full vacuum
Date: Tue, 17 Jan 2006 10:36:11 -0500
Message-ID: <28618.1137512171@sss.pgh.pa.us> (raw)
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Michael Riess <mlriess@gmx.de> writes:
> But actually I never understood why the database system slows down at
> all when there is much unused space in the files.
Perhaps some of your common queries are doing sequential scans? Those
would visit the empty pages as well as the full ones.
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, mlriess@gmx.de
Subject: Re: Autovacuum / full vacuum
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