-Xverbosegc
option, available only for Java 2 JRE and SDK for HP-UX,
version 1.3.x, or later.
Real world data collection is often time consuming and may require that many independent application variables be both identified and unchanged from one run to the next. To help you reduce the number of these data collection cycles, the HPjtune GC Simulation feature allows you to simulate the effect of different JVM parameters based on your existing data capture files.
Note that once you have identified promising JVM parameters from your simulations, you should always validate the simulation results with an actual application run.