Mathematical modelling for performability analysis of homogeneous multi-server systems with deferred repairs.

Ever, Enver and Gemikonakli, Orhan (2006) Mathematical modelling for performability analysis of homogeneous multi-server systems with deferred repairs. In: The proceedings of the European Modelling Symposium: 11-12 September 2006. UCL, London, pp. 84-88. ISBN 9780951650936

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Abstract

Fault-tolerant systems with repair-upon-failure strategy can become expensive in terms of labour and time. Especially for homogeneous multi-server systems, if no control hierarchy exists, postponing non essential repairs can reduce these costs without affecting the availability of the whole system significantly. While postponing these repairs, it is essential to keep the whole system capable to deal with user requests. For this purpose, usually, a threshold value is defined which represents the minimum number of servers the system administrator should keep operative. Performability evaluation of such systems is very important. In this paper, the performance modelling of a homogeneous, multi-server system, serving a stream of arriving jobs is considered. To analyse the effects of various deferred repair strategies, such systems are modelled and solved for exact performability measures for both bounded and unbounded queuing systems.

Item Type:Book Section
Research Areas:Middlesex University Schools and Centres > School of Science and Technology > Computer and Communications Engineering
Middlesex University Schools and Centres > School of Science and Technology > Computer Science > SensoLab group
ID Code:1737
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Deposited On:30 Mar 2009 15:19
Last Modified:24 Oct 2014 15:33

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