Recommendations for implementing IBM J9 JVM

You can review the recommedations for configuring your JVM.

In addition to the general recommendations in General JVM recommendations , you should configure the IBM® JVM as follows:

  • Set JIT and MMI on (by default)
  • Set PSALLOC=EARLY and NODISCLAIM=TRUE (IBM AIX® only)
  • Set the JVM to use the Generational Concurrent Garbage Collector (-Xgcpolicy:gencon).