Abstract
We consider a parallel server system that consists of several customer classes and server pools in parallel. We propose a simple robust control policy to minimize the total linear holding and reneging costs. We show that this policy is asymptotically optimal under the many-server heavy traffic regime for parallel server systems when the service times are only server pool dependent and exponentially distributed.
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J.G. Dai’s research supported in part by National Science Foundation grants CMMI-0727400 and CNS-0718701, and by an IBM Faculty Award.
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Dai, J.G., Tezcan, T. Optimal control of parallel server systems with many servers in heavy traffic. Queueing Syst 59, 95–134 (2008). https://doi.org/10.1007/s11134-008-9078-5
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DOI: https://doi.org/10.1007/s11134-008-9078-5
Keywords
- Call centers
- Skill-based routing
- Halfin-Whitt regime
- Customer abandonment
- State space collapse
- Load balancing