The packages provides the following usage meter for LCD on some Logitech keyboards, usind g15daemon:

CPU Screen displays graphs of User/System/Nice and Idle time, along with LoadAVG and Uptime.

Memory Screen displays Memory Total & Free, and graph of Used vs Buffered+Cached Memory.

Swap Screen displays Used, Free and Total swap space, along with the number of pages currently paged in/out.

Network Screen displays Total bytes In/Out, history graph, Peak speed.