Evaluating the performance of JXTA over SATCOM

The transition towards a network-based defence brings along requirements to both network and distributed applications. Distributed applications are faced with a variety of networks ranging from high bandwidth links to disadvantaged grids. At the same time middleware has become one of the preferred programming models for such applications. Middware ease the development of distributed applications by hiding the complexity of distribution, and thus providing a new level of abstraction to the developer. Current middleware do however in most cases lack the ability to perform when running on low bandwidth and high latency links. In this report we evaluate the performance of the JXTA middleware when run over a satcom system with these two properties. We also make some suggestions on how to improve the performance.