Java Performance on Limited Devices.

This paper evaluates the runtime performance of two different versions of J9 Virtual Machines (VM) on the TOSHIBA Pocket PC and the TUNGSTEN C. The publicly available benchmark and some small test programs written by the authors were tested on the devices. The VM was tested with and without Just-In-Time compiling (JIT). This paper discusses the areas where the J9 has improved performance and provides some cross platform comparisons. Also, this paper argues the reasons why benchmarks may not realize the full performance that can be achieved from the JIT enabled J9 VM and characterizes applications where the JIT will improve performance.