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8.3 Autovacuum Questions

From: "Chris Hoover" <revoohc(at)gmail(dot)com>
To: "pgsql-admin(at)postgresql(dot)org Admin" <pgsql-admin(at)postgresql(dot)org>
Subject: 8.3 Autovacuum Questions
Date: 2008-07-14 20:26:08
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Lists: pgsql-admin
I just have a couple of quick questions about 8.3 and Autovacuum.

1.  When autovacuum chooses to vacuum a table, the entire table is vacuumed,
and not just a specified percentage of the table.  Correct?

2.  There is no way, without turning autovacuum off, of excluding
vacuum/analyze during a specific period of time (say during a known peak
usage period).

3.  If I have a PostgreSQL cluster with 10 databases, does
autovacuum_max_workers=3 mean I have a possibility of 3 total workers or 30
workers (i.e. autovacuum_max_workers * number of db's)?




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Next:From: Alvaro HerreraDate: 2008-07-14 20:29:33
Subject: Re: 8.3 Autovacuum Questions
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