Considerations Before Using the Services

Before you use the subsystem work manager and the execution delay monitoring services, you should consider the following:

• What “type” of subsystem work manager you are.
  • Transaction processing system
  • Data or resource manager
• What benefits do you expect to reap from using the WLM services?
  • Do you want your customers to be able to specify goals for your transactions?
  • Do you plan on getting reporting information on goals defined in the MVS™ workload management service definition?
• What kinds of address spaces does the subsystem work manager consist of?
• What is the definition of a transaction or work request, from your customer's perspective?
• What kind of functions do the address spaces provide?
  • Control address spaces?
  • Transaction level dispatching?
  • Other execution regions?
  • Other supporting address spaces?
• What environments does the subsystem work manager run in?
  • Authorization, including PSW key
  • Dispatchable unit mode
  • Cross memory mode
  • AMODE
  • ASC mode
  • Interrupt status
  • Locks
• Does the subsystem work manager use other products, such as a data manager?
• Does the work cross MVS system (MVS image) boundaries?
• Does the work cross MVS sysplex boundaries?