The source files in this distribution are 
	Copyright (C) 1999, Doug MacEachern, and are licensed for
	use under the same terms as Perl itself.

this package is a Perl interface to libgtop:

http://home-of-linux.org/gnome/libgtop/

see also: Stas Bekman's Apache::VMonitor
http://www.cpan.org/modules/by-module/Apache/