GKrellM charts CPU, load, Disk, and all active net interfaces
automatically. An on/off button and online timer for the PPP
interface is provided, as well as monitors for memory and swap usage,
file system, internet connections, APM laptop battery, mbox style
mailboxes, and temperature sensors on supported systems. Also
included is an uptime monitor, a hostname label, and a clock/calendar.
Additional features are:

* Autoscaling grid lines with configurable grid line resolution.
* LED indicators for the net interfaces.
* A gui popup for configuration of chart sizes and resolutions.