System Address Space and Work Unit Analysis
The System Address Space and Work Unit Analysis section of the CPU activity report provides overall address space and work unit information and also provides the minimum, maximum, and average numbers of running or ready to run work units.
- In storage and ready to execute
- In storage
- Out of storage and ready to execute
- Out of storage and waiting to execute
- Logically out of storage and ready to execute
- Logically out of storage and waiting to execute.
Data is also presented on the number of address spaces used by batch users, started tasks (STC), TSO/E users, APPC/MVS transaction schedulers (ASCH), and z/OS UNIX (OMVS). Examining this data can indicate when a backlog of address spaces are waiting to use the processor.
The work unit statistics (MIN, MAX, AVG) are provided per processor type, that is, per standard CPs, zAAPs, and zIIPs. The distribution does not distinguish between the processor types (CPs, zAAPs, and zIIPs.).
The graphical and numeric presentation of the In-Ready work unit queue distribution provides a detailed view on how many work units are running or waiting for a processor. The distribution does not distinguish between the processor types (CPs, zAAPs, and zIIPs).