root@tickets:/var/log/postgresql# ps aux |grep postgres
postgres 16695  0.1  2.0 126520 10084 ?        S    08:31   0:00 /usr/lib/postgresql/9.1/bin/postgres -D /var/lib/postgresql/9.1/main -c config_file=/etc/postgresql/9.1/main/postgresql.conf
postgres 16697  0.0  0.3 126504  1820 ?        Ss   08:31   0:00 postgres: writer process
postgres 16698  0.0  0.3 126504  1580 ?        Ss   08:31   0:00 postgres: wal writer process
postgres 16699  0.0  0.5 127360  2888 ?        Ss   08:31   0:00 postgres: autovacuum launcher process
postgres 16700  0.0  0.3  94880  1660 ?        Ss   08:31   0:00 postgres: stats collector process