I configured Windows Performance Monitor (a.k.a. perfmon) to
record data on the CPU utilization by software processes. The system
has four processors.

The "Process(_Total)\% Processor Time" performance counter
includes all 4 processors. However, this appears to include the "time
taken" by the "Idle" process. However, the "Processor(_Total)\% Idle
Time" appears only to include one processor.

Does this make any sense? Or is there some other data I should
be collecting?

Does the "Idle" process only show one processor (less than 100%)
because only one processor is actually being utilized?

Thanks, Alan