Re: Autovacuum behavior - Mailing list pgsql-admin

From John Scalia
Subject Re: Autovacuum behavior
Date
Msg-id CABzCKRB19WVRhR2A7Hwx5YC8RNnotb+ojtO26YB9DCuuBMfkvg@mail.gmail.com
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In response to Re: Autovacuum behavior  (John Scalia <jayknowsunix@gmail.com>)
List pgsql-admin
And there are no reloptions set for any tables in pg_class.

On Thu, Jul 30, 2015 at 2:11 PM, John Scalia <jayknowsunix@gmail.com> wrote:
Sure, I just replied too quickly as there was no vacuum_cost_limit, so I'm guessing the default of 200 is being used. I'll look in pg_class to see if anything is set.

On Thu, Jul 30, 2015 at 2:07 PM, Alvaro Herrera <alvherre@2ndquadrant.com> wrote:
John Scalia wrote:
> autovacuum_vacuum_cost_limit is currently set at -1. Not really sure what
> it should be, as I still need to look that up.

Yes, I saw that from your snippet, but that value means to use the value
from vacuum_cost_limit.  If that one is set to a positive value, it may
lead to sleeps during vacuum.

Also, tables could have values set in pg_class.reloptions, leading to
sleeps.

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


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