[CentOS] Xen and overall system load

In a CentOS 5 dom0, how does one find out the overall system load?

In the early days of Xen, I believe an uptime on dom0 provides an overall
load for the server.  This doesn't seem to be the case anymore.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.centos.org/pipermail/centos/attachments/20070525/e4c30b4b/attachment.html>