:: Apache accesses

:: Apache volume

:: Disk IOs per device

:: Disk latency per device

:: Disk throughput per device

:: Disk usage in percent

:: Disk utilization per device

:: Inode usage in percent

:: IO Service time

:: IOstat

:: eth0 errors

:: eth0 traffic

:: Firewall Throughput

:: HTTP loadtime of a page

:: Postfix bytes throughput

:: Postfix Mailqueue

:: PostgreSQL bgwriter

:: PostgreSQL buffer cache

:: PostgreSQL checkpoints

:: PostgreSQL connections

:: PostgreSQL connections per database

:: PostgreSQL connections per user

:: PostgreSQL database size

:: PostgreSQL locks

:: PostgreSQL query length

:: PostgreSQL transaction log

:: PostgreSQL transactions

:: Fork rate

:: Number of threads

:: Processes

:: Processes priority

:: 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