Re: autovacuum stress-testing our system - Mailing list pgsql-hackers

From Alvaro Herrera
Subject Re: autovacuum stress-testing our system
Date
Msg-id 1348673324-sup-4711@alvh.no-ip.org
Whole thread Raw
In response to Re: autovacuum stress-testing our system  (Tomas Vondra <tv@fuzzy.cz>)
Responses Re: autovacuum stress-testing our system  (Tomas Vondra <tv@fuzzy.cz>)
List pgsql-hackers
Excerpts from Tomas Vondra's message of mié sep 26 12:25:58 -0300 2012:
> Dne 26.09.2012 16:51, Jeff Janes napsal:

> > I think forking it off to to another value would be better.  If you
> > are an autovacuum worker which is just starting up and so getting its
> > initial stats, you can tolerate a stats file up to
> > "autovacuum_naptime
> > / 5.0" stale.  If you are already started up and are just about to
> > vacuum a table, then keep the staleness at PGSTAT_RETRY_DELAY as it
> > currently is, so as not to redundantly vacuum a table.
>
> I always thought there's a "no more than one worker per database"
> limit,

There is no such limitation.

--
Álvaro Herrera                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services



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