:: Disk usage in percent

:: Inode usage in percent

:: IOstat

:: S.M.A.R.T values for drive sda

:: eth0 errors

:: eth0 traffic

:: Netstat

:: Postfix bytes throughput

:: Postfix Mailqueue

:: Postfix message throughput

:: PostgreSQL bgwriter

:: PostgreSQL buffer cache

:: PostgreSQL checkpoints

:: PostgreSQL connections

:: PostgreSQL connections per user

:: PostgreSQL database size

:: PostgreSQL locks

:: PostgreSQL query length

:: PostgreSQL scan types

:: PostgreSQL scan types

:: PostgreSQL transaction log

:: PostgreSQL transactions

:: PostgreSQL tuple access

:: PostgreSQL tuple access

:: Fork rate

:: Processes

:: VMstat

:: Available entropy

:: CPU usage

:: File table usage

:: Individual interrupts

:: Inode table usage

:: Interrupts and context switches

:: Load average

:: Memory usage

:: Swap in/out

:: Uptime