Introduction to the IBM® JVM Performance and Tuning Guidelines

The IBM® Java™ Virtual Machine (JVM) contains a number of private and proprietary technologies that distinguish it from other implementations of JVM.

For instance, the IBM® JVM uses mixed-mode interpretation (MMI). When the MMI detects that bytecodes have been interpreted multiple times, it invokes a just-in-time (JIT) compiler to compile those bytecodes to native instructions. Due to the significant performance benefits, the JIT and MMI are enabled by default. The JVM performance degrades considerably when JIT is disabled. For more information about the JIT compiler and MMI, refer to the IBM JDK 6.0: Java™ Diagnostics Guide.

Refer to the Sterling B2B Integrator System Requirements documentation for the supported operating system and JVM combination.

This topic describes the processes involved in tuning, monitoring, and performing basic troubleshooting when deploying the Sterling B2B Integrator using the IBM JVM.

For information about using the tuning wizard to set the IBM JVM parameters, see Edit Performance Configuration Settings.