Binary package “procmeter3” in ubuntu oneiric
graphical system status monitor
ProcMeter displays constantly updating graphs of system information.
Many different graphs are supported, including:
APM and ACPI information.
Date, time, uptime.
Amount of free and used disk space.
Size, number of lines, rate of growth of log files.
Amount of used and free memory and swap.
Traffic on network devices.
Load average, number of processes running and starting.
Low level system statistics like CPU usage, disk usage and swapping.
CPU clock speed.
Wireless network link quality.
As if all that wasn't enough, procmeter is designed to be easily extendable
Procmeter can use either the Athena or the GTK+ widgets. It also supports
display on small LCD screens using the Linux lcdproc driver.