Understanding How Jopaz Calculates Statistics
The Jopaz TCB times are lower than the JES2 times because Jopaz starts counting when Java main gets control. Jopaz does not count the JVM start-up time.
The reason the JES2 CPU time is much higher than the total Jopaz GP time is because JES2 counts TCB time on zIIP as CPU time. The TCB workload is shifted to zIIP processors in Java scenarios. This cannot be seen from the JES IEF032I message.
You need to consider this fact when setting the JCL TIME parameter.