ABSTRACT
Abstract Usually, design methods for soft real-time systems do not provide any help in performance analysis and estimation of the system which is being designed. For this reason the main proposal of this paper is how can they be extended to cope with this subject. This paper presents several approximate analytical models of performance software elements, called multiclass channels and pools. These elements are used in the construction of large real-time software systems to complement automatically the system design, in order to obtain the desired average estimates for the soft real-time constraints.
