sarface is a user-interface to the sysstat/sar database which inputs data from sar and plots to a live X11 graph via gnuplot. It mimics the cmd-line options from sar but can cross-plot any two or more stats and apply simple mathematical functions them.
This project has been renamed "pycopia", and extended. This is no longer maintained. Pycopia is hosted at Google code hosting. Please go to: http://code.google.com/p/pycopia/