Auto Vacuum Daemon not running even though it's been configured

Hi all,

I'm running PostgreSQL 9.2.4. I have autovacuum configured within my
database. However, when I verify it, it has never been ran even though the
autovacuum process is running.

*Autovacuum Parameters:*

postgres=# show autovacuum;
autovacuum
------------
on

postgres=# show track_counts;
track_counts
--------------
on

*Verification:*

*Step 1:*
[root(at)tiffany1 ~]# grep autovacuum /var/log/messages

*Step 2:*
[root(at)tiffany1 ~]# ps -aef | grep autovacuum
postgres 4923 4883 0 Jul20 ? 00:00:15 postgres: autovacuum
launcher process
root 52995 5313 0 10:12 pts/0 00:00:00 grep autovacuum

*Step 3:*
select
schemaname,relname,last_vacuum,last_autovacuum,last_analyze,last_autoanalyze,vacuum_count,autovacuum_count,analyze_count,autoanalyze_count
from pg_stat_user_tables;

All the values were 0 for the tables in every single database.

Any advice please?

Thanks!

--
Regards,
Ang Wei Shan