Cross-Architectural Performance Portability of a Java Virtual Machine Implementation

Matthias Jacob
Keith Randall

Proceedings of the 2nd Java Virtual Machine Research and Technology Symposium (JVM '02)

[Full text in PDF, 145KB]


This paper describes our experience in porting Compaq's FastVM from the Alpha processor architecture to the Intel x86 processor architecture. We encountered several opportunities and pitfalls along the way in porting a JVM designed for a RISC architecture to a CISC architecture. Our goal was to preserve most of the FastVM's performance benefits already available on the Alpha platform, and modify or discover new optimizations as they were required for x86. We found that by porting a fast RISC JVM to x86, we could generate a JVM with performance competitive to state-of-the-art production JVM implementations.