http://qs321.pair.com?node_id=11114174


in reply to Re^2: portable way to get system load average
in thread portable way to get system load average

It supports multiple platforms, which isn't to say it supports all platforms. "Currently, this module just supports Linux, FreeBSD, Darwin (Mac OS X), OpenBSD, and NetBSD. It should be easy enough to add support for other operating systems, though."