CPU Statistics

In a multiprocessor system, the statistics for the additional processors are included for the following metrics:

CPU ID: A unique number distinguishing one processor from another.
Total Idle: The percentage of time that the CPU was idle.
MP_SYNCH Wait: The time a CPU spends waiting to acquire a spinlock in kernel mode. This metric is always 0 on a single processor system.
Inter Stack: Percentage of CPU time spent executing on the interrupt stack.
Kernel: Percentage of CPU time spent executing in kernel mode (for example, while in the OpenVMS executive) but not on the interrupt stack.
Exec: Percentage of time the CPU spent executing in executive mode. For example, RMS is usually executed in executive mode.
Super: Percentage of time the CPU spent executing in supervisor mode. For example, DCL normally executes in supervisor mode.
User: Percentage of time the CPU spent executing in user mode.
Compat: Percentage of CPU time spent in (PDP-11) compatibility mode. Not all processors support compatibility mode; hence, in these cases this value is always zero.
System: Computed as the sum of the interrupt, busy wait, kernel, and executive CPU Busy percentages. This metric represents the amount of CPU time the system uses to keep itself running and can be thought of as overhead.
Task: Computed as the sum of the supervisor, user, and compatibility mode busy percentages. This metric represents the amount of CPU time the system uses to perform work.