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OPTIMAL BERNOULLI ROUTING IN AN UNRELIABLE M/G/1 RETRIAL QUEUE

Published online by Cambridge University Press:  02 November 2010

Nathan P. Sherman
Affiliation:
Directorate of Force Management Policy, U.S. Air Force Headquarters, Manpower and Personnel, Washington, DC 20330-1040 E-mail: nathan.sherman@us.af.mil
Jeffrey P. Kharoufeh
Affiliation:
Department of Industrial Engineering, University of Pittsburgh, Pittsburgh, PA 15261 E-mail: jkharouf@pitt.edu

Abstract

Recently, Sherman et al. [14] analyzed an M/G/1 retrial queuing model in which customers are forced to retry their service if interrupted by a server failure. Using classical techniques, they provided a stability analysis, queue length distributions, key performance parameters, and stochastic decomposition results. We analyze the system under a static Bernoulli routing policy that routes a proportion of arriving customers directly to the orbit when the server is busy or failed. In addition to providing the key performance parameters, we show that this system exhibits a dual stability structure, and we characterize the optimal Bernoulli routing policy that minimizes the total expected holding costs per unit time.

Information

Type
Research Article
Copyright
Copyright © Cambridge University Press 2011

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