From: Mindaugas <mind@bi.lt>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-performance@postgresql.org
Subject: Re: Autovacuum / full vacuum
Date: Wed, 18 Jan 2006 17:50:49 +0200
Message-ID: <034701c61c46$f427df20$f20214ac@bite.lt> (raw)
References: <dqigaf$1b98$1@news.hub.org>
<20060117145649.GE21092@phlogiston.dyndns.org>
<608xteerfh.fsf@dba2.int.libertyrms.com>
<20060117173046.GA4296@surnet.cl>
<604q42elzl.fsf@dba2.int.libertyrms.com>
<20592.1137526372@sss.pgh.pa.us>
> >> Even a database-wide vacuum does not take locks on more than one table.
> >> The table locks are acquired and released one by one, as the operation
> >> proceeds.
>
> > Has that changed recently? I have always seen "vacuumdb" or SQL
> > "VACUUM" (without table specifications) running as one long
> > transaction which doesn't release the locks that it is granted until
> > the end of the transaction.
>
> You sure? It's not supposed to, and watching a database-wide vacuum
> with "select * from pg_locks" doesn't look to me like it ever has locks
> on more than one table (plus the table's indexes and toast table).
Are there some plans to remove vacuum altogether?
Mindaugas
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To: pgsql-performance@postgresql.org
Cc: mind@bi.lt, tgl@sss.pgh.pa.us
Subject: Re: Autovacuum / full vacuum
In-Reply-To: <034701c61c46$f427df20$f20214ac@bite.lt>
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