
508 DS8800 Performance Monitoring and Tuning
priority application is hindered by a lower priority application that competes for the same
system resources. This contention can occur when multiple applications request data from
the same drives. When IOPM encounters this situation, it delays lower priority I/O data to
assist the more critical I/O data in meeting its performance targets.
The WLM integration for the I/O Priority Manager is available with z/OS V1.11 and higher,
with the following necessary APARs: OA32298, OA34063, and OA34662.
With z/OS and zWLM software support, the user assigns application priorities through the
Workload Manager