Use of modelling in performance evaluation of computer systems

Abstract

There is a number of models of user behaviour applied in modelling studies on computer system performance predictions.The models in most cases can be called "resources-demands models", where users are only considered as resources consumers. Some authors build more sophisticated models - concerning user psychological features.The paper discusses some of the users' models and their applicability in modelling and design of operating systems for computers. Some examples being the result of the research carried in the Technical University of Wroclaw, concerning complex users' model and performance evaluation of operating systems by simulation are presented.