Auto VACUUM

Hi All -

I need some help from you. this question is in follow up with my
earlier questions. I turned the autovacuum and restarted the db and the
settings I have as follows. It seems the autovacuum process has not been
turned on. It's almost more than 3 hours I have restarted my DB with
following setting. I have ps -ef to see the proces list. Is there some
thing I am doing wrong.

Can you please help?

Regards

# - Query/Index Statistics Collector -

#track_activities = on
track_counts = on
#track_functions = none # none, pl, all
#track_activity_query_size = 1024
#update_process_title = on
#stats_temp_directory = 'pg_stat_tmp'

#------------------------------------------------------------------------------
# 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 = 180min # 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