Re: Can postgres run autovacuum tasks when autovacuum is disabled?

On Wed, Jul 30, 2014 at 1:12 AM, Andrey Zhidenkov <pensnarik@gmail.com> wrote:
> I'm confused about this:
>
> [postgres@srv log]$ grep autovacuum ~/data/postgresql.conf
> autovacuum = off # Enable autovacuum subprocess?  'on'
> log_autovacuum_min_duration = 0 # -1 disables, 0 logs all actions and
> autovacuum_naptime = 10min # time between autovacuum runs
>
> So, as you can see, autovacuum is disabled now and I could not seen any
> autovacuum tasks about few hours. But now
> I can see this:
>
> srv=# select backend_start, query from pg_stat_activity where query ilike
> '%vacuum%';
>          backend_start         |                                      query
> -------------------------------+---------------------------------------------------------------------------------
>  2014-07-29 21:38:42.882383+04 | select backend_start, query from
> pg_stat_activity where query ilike '%vacuum%';
>  2014-07-30 10:21:51.5511+04   | autovacuum: VACUUM ANALYZE customer_email
>  2014-07-30 10:43:19.49936+04  | autovacuum: VACUUM ANALYZE cdr_tech
> (3 rows)
>
> The problem is that table cdr_tech is very large (70Gb) and I couldn't wait
> while autovacuum is finished, I would like to run vacuum manually at night
> time.
>
> Whan I do wrong?

Are you sure these aren't to prevent wrap-around?