A framework for validating distributed real time applications by performance evaluation of communication profiles

Our general research problem is to provide models or tools helping with the realisation of real time distributed applications. Inside this framework, it is significant and even crucial to take into account in the early stages of system life cycle, performance parameters such as response time or resources load. Performance evaluation of a real-time distributed environment is a difficult task whose results are often subject to criticism because the model relies on approximations based on developer intuition. In this paper we present results concerning the performance evaluation study of a distributed application platform called Cime Computing Environment (CCE), ESPRIT Project no.7096. We explain how we have used a modular and reliable modeling technique and how we have tested each part of the complete model. We have tested the models by comparison with known results of analytical study or measurements experiments. This performance evaluation should help the parameter setting to meet real-time constraints.