The sys-cpu library provides an interface for gathering
information about your system's CPU. This includes not
only technical data such as processor type, but also
CPU statistics, such as load average information.

It is part of a library of a set libraries for various
system  administration tasks, such as gathering
information about users, processes, your CPU, the
filesystem, and so on.

WWW: http://www.rubyforge.org/projects/sysutils