The overall CPU utilization percentage on the system. If
the system has more than one processor, the value returned
is averaged out over all of the processors that are present.
The measurement interface must be enabled in order to get
a valid value returned for this object ( see above object ).
The number returned is the percentage of the CPU that was
used since the last time the number was sampled. This
value is consistent with various HP performance tools such
as Glance/XL. If the measurement interface is not enabled,
the value returned will be 0.