Optimality of Control-Limit Type of Software Rejuvenation Policy

Authors:
Hiroyuki Ito;Tadashi Dohi
Affiliations:
Department of Information Engineering, Hiroshima University;Department of Information Engineering, Hiroshima University
Venue:
ICPADS '05 Proceedings of the 11th International Conference on Parallel and Distributed Systems - Workshops - Volume 02
Year:
2005

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Analysis of a service degradation model with preventive rejuvenation

ISAS'06 Proceedings of the Third international conference on Service Availability

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Abstract

Software rejuvenation is a prevention and proactive maintenance policy that is particular useful for countern acting the phenomenon of software aging.In this paper we consider and operational software systems with multiple degradations and derive the optimal software rejuvenation policy minimizing the expected operation cost per unit time in the steadystate, via the dynamic programming approach. Especially;we show analytically that the control limit type of a software rejuvenation policy is optimal. A numericalexample is presented to make a decision table and to perform the sensitivity analysis of cats parameters.