We are in the process of upgrading our ERP system from RPG to Java.
We are having some performance issues with the Java based system and I'm
using Job Watcher from iDoctor to evaluate.
The results from Job watcher show a very large percentage of time is spent
on CPU queueing the breakdown is 50% Dispatched CPU, 40% CPU queueing and
10% paging, journaling and IO. The CPU utilisation is around 30 - 40%
sometime spiking to 80%.
In our RPG system very little time is sent on CPU queueing.
Is it normal JVM's to spend a large percentage of time CPU queueing

Tim

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