Issue No. 07 - July (1982 vol. 31)
J.F. Meyer , Departments of Electrical and Computer Engineering and Computer and Communication Sciences, University of Michigan
If computing system performance is degradable, then as recognized in a number of recent studies, system evaluation must deal simultaneously with aspects of both performance and reliability. One approach is the evaluation of a system's "performability," which relative to a specified performance variable Y, generally requires solution of the probability distribution function of Y. In this paper we examine the feasibility of closed-form solutions of performability when Y is continuous. In particular, we consider the modeling of a degradable buffer/multiprocessor system whose performance Y is the (normalized) average throughput rate realized during a bounded interval of time. Employing an approximate decomposition of the model, we show that a closed-form solution can indeed be obtained.
reliability evaluation, Degradable performance, fault-tolerant computing, performability evaluation, performance evaluation, queueing systems
J. Meyer, "Closed-Form Solutions of Performability," in IEEE Transactions on Computers, vol. 31, no. , pp. 648-657, 1982.