Services for Subsystem Work Managers

The workload management services for subsystem work managers allow an installation to process work towards performance goals defined in a service policy. Workload management uses the information provided by the subsystem work managers through the services to match system resources to work to meet goals.

A service policy contains performance goals for all kinds of MVS-managed work expressed in the same terms. A service level administrator identifies and categorizes all of an installation's work and assigns the work performance goals in the workload management service policy. For information about how to set up and use a service policy, see z/OS MVS Planning: Workload Management.

The services provide workload management with the information it needs to dynamically adapt to match resources to work to meet the performance goals.

Workload management matches system resources to meet the performance goal assigned to a service class. This management involves handling address space-related resources, such as processor storage, multi-programming level (MPL), dispatching, and I/O queueing.

The services for subsystem work managers can be grouped into the following categories:

• Work manager services
• Execution delay services
• Enclave services
• Queueing manager services
• Routing manager services
• Scheduling environment services
• Sysplex routing services
• Query system information service