SAVAD: sistema de avaliação de desempenho de modelos de redes de filas.

Abstract

Systems that exhibit resource contention usually are modelled using the networks of queues paradigm Examples of that systems are computer networks, traffic systems, manufacturing process, bank branches, etc. This dissertation introduces SAVAD, an expert system for performance evaluation of models for networks of queues. SAVAD chooses and efficiently applies the most adequate technique (analytic or numeric) in order to solve the user proposed model, issuing the requested pertinent performance measures. SAVAD provides a powerful, flexible, intelligent and friendly interface, which allows the user to easily model networks of queues using modeling elements. The object-oriented approach was used in designing and implementing SAVAD. The nice characteristics inherited form this approach (namely: software reusability, extensibility and modularity) allow SAVAD to be easily enrichable by new modeling elements and by new options for both analytical and numerical solutions.