Quantifying the performance effects of idle time utilization in multiserver systems

Quantifying the performance effects of idle time utilization in multiserver systems

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Article ID: iaor20082033
Country: United States
Volume: 54
Issue: 2
Start Page Number: 189
End Page Number: 199
Publication Date: Mar 2007
Journal: Naval Research Logistics
Authors: ,
Keywords: vacation models, M/M/c queues
Abstract:

In many practical multiserver queueing systems, servers not only serve randomly arriving customers but also work on the secondary jobs with infinite backlog during their idle time. In this paper, we propose a c-server model with a two-threshold policy, denoted by (e, d), to evaluate the performance of this class of systems. With such a policy, when the number of idle servers has reached d(<c), then e(<d) idle agents will process secondary jobs. These e servers keep working on the secondary jobs until they find waiting customers exist in the system at a secondary job completion instant. Using the matrix analytic method, we obtain the stationary performance measures for evaluating different (e, d) policies.

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