Horton

Re: Autovacuum Improvements

Alvaro Herrera <alvherre@commandprompt.com>

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From: Alvaro Herrera <alvherre@commandprompt.com>
To: Simon Riggs <simon@2ndquadrant.com>
Cc: Pavan Deolasee <pavan@enterprisedb.com>, Christopher Browne <cbbrowne@acm.org>, pgsql-general@postgresql.org, pgsql-hackers@postgresql.org
Date: 2007-01-16T14:25:25Z
Lists: pgsql-hackers 
Simon Riggs wrote:

> Perhaps we should focus on the issues that might result, so that we
> address those before we spend time on the details of the user interface.
> Can we deadlock or hang from running multiple autovacuums?

If you were to run multiple autovacuum processes the way they are today,
maybe.  But that's not my intention -- the launcher would be the only
one to read the catalogs; the workers would be started only to do a
single VACUUM job.  This reduces the risk of this kind of problems.

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.