Services for Performance Monitors

The workload reporting services are intended for use by monitoring or reporting products to collect performance data. These services replace some of the existing methods of collecting data, and provide as complete a picture of performance information as possible.

A workload management ISPF application contains an installation's goals for work in a service policy. The reporting services access the service policy information, and report on how well the installation is doing in processing towards the goals in the policy. The services report information based on the service classes defined in the service policy. They also provide delay information on work managed by subsystems using the execution delay monitoring services.

Because the system collects performance data continually, there is no set reporting interval. So, unlike earlier releases of MVS™, multiple performance monitors can request the services at the same time. And, performance monitors can collect the data based on their own reporting intervals. When the performance monitor invokes a service to collect performance data, the data is provided in a cumulative fashion.

When a significant change occurs in workload management, such as a policy activation, the data collection is stopped and re-started. At such times, performance monitors should also stop and re-start their reporting intervals. For each time that data collection is stopped and re-started in workload management, an ENF signal notifies listeners of the change.