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Closed-Form Solutions of Performability
July 1982 (vol. 31 no. 7)
pp. 648-657
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.
Index Terms:
reliability evaluation, Degradable performance, fault-tolerant computing, performability evaluation, performance evaluation, queueing systems
J.F. Meyer, "Closed-Form Solutions of Performability," IEEE Transactions on Computers, vol. 31, no. 7, pp. 648-657, July 1982, doi:10.1109/TC.1982.1676062
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