Technische Univ. Twente, Enschede (The Netherlands), Dept. of Computer Science, MEMO-INF-89-25, 17 pp. pages, April 1989.
Abstract: Dynamic queueing networks, which combine product form queueing networks and generalized stochastic Petri nets are very suitable for the performability analysis of fault-tolerant distributed computer systems. A dynamic queueing network model of a distributed transaction processing system is given. It is shown that an increase in the failure rate of a certain component does not always imply a decrease in performance for the customers using that component. By varying some of the model parameters the influence of the number of available repair units on the overall performance of the system is shown.
Keywords: transaction throughput; performance; dynamic queing network; generalized stochastic net; fault-tolerance; failure rate; repair unit.