Re: Autovacuum stopped running

# - Cost-Based Vacuum Delay -

#vacuum_cost_delay = 0ms # 0-100 milliseconds
#vacuum_cost_page_hit = 1 # 0-10000 credits
#vacuum_cost_page_miss = 10 # 0-10000 credits
#vacuum_cost_page_dirty = 20 # 0-10000 credits
vacuum_cost_limit = 10000 # 1-10000 credits

#-----------------------------------------------------------------------
-------
# AUTOVACUUM PARAMETERS
#-----------------------------------------------------------------------
-------

#autovacuum = on # Enable autovacuum subprocess?
'on'
# requires track_counts to also
be on.
#log_autovacuum_min_duration = -1 # -1 disables, 0 logs all
actions and
# their durations, > 0 logs only
# actions running at least this
number
# of milliseconds.
autovacuum_max_workers = 10 # max number of autovacuum
subprocesses
#autovacuum_naptime = 1min # time between autovacuum runs
#autovacuum_vacuum_threshold = 50 # min number of row updates
before
# vacuum
#autovacuum_analyze_threshold = 50 # min number of row updates
before
# analyze
#autovacuum_vacuum_scale_factor = 0.2 # fraction of table size before
vacuum
#autovacuum_analyze_scale_factor = 0.1 # fraction of table size before
analyze
#autovacuum_freeze_max_age = 200000000 # maximum XID age before forced
vacuum
# (change requires restart)
#autovacuum_vacuum_cost_delay = 20ms # default vacuum cost delay for
# autovacuum, in milliseconds;
# -1 means use vacuum_cost_delay
#autovacuum_vacuum_cost_limit = -1 # default vacuum cost limit for
# autovacuum, -1 means use
# vacuum_cost_limit

> -----Original Message-----
> From: Tom Lane [mailto:tgl(at)sss(dot)pgh(dot)pa(dot)us]
> Sent: Saturday, May 01, 2010 5:10 PM
> To: Benjamin Krajmalnik
> Cc: Kevin Grittner; pgsql-admin(at)postgresql(dot)org
> Subject: Re: [ADMIN] Autovacuum stopped running
>
> "Benjamin Krajmalnik" <kraj(at)illumen(dot)com> writes:
> > TO be truthful, I did not check that.
> > I arrived at the conclusion because although I have 10 autovacuum
> > threads, none of the tables had been autoanalyzed or autovacuumed in
> > hours (and due to the nature of the activity they do so every
> minute).
> > If I ever see this behavior now I know what to check for :) Thx.
>
> We've seen one or two previous reports that suggested that the autovac
> launcher might have stopped launching workers, but it hasn't been
> reproducible. Are you using any nonstandard parameters for
autovacuum?
>
> regards, tom lane