Optimal Scheduling of Critically Loaded Multiclass GI/M/n+M Queues in an Alternating Renewal Environment
Optimal Scheduling of Critically Loaded Multiclass GI/M/n+M Queues in an Alternating Renewal Environment
复制标题
交替更新环境中临界负载多类 GI/M/n M 队列的优化调度
DOI:
10.1007/s00245-020-09698-9
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发表时间:
2020
影响因子:
1.8
通讯作者:
Zheng, Yi
中科院分区:
文献类型:
--
作者:
Arapostathis, Ari;Pang, Guodong;Zheng, Yi
In this paper, we study optimal control problems for multiclassqueues in an alternating renewal (up–down) random environment in the Halfin–Whitt regime. Assuming that the downtimes are asymptotically negligible and only the service processes are affected, we show that the limits of the diffusion-scaled state processes under non-anticipative, preemptive, work-conserving scheduling policies, are controlled jump diffusions driven by a compound Poisson jump process. We establish the asymptotic optimality of the infinite-horizon discounted and long-run average (ergodic) problems for the queueing dynamics. Since the process counting the number of customers in each class is not Markov, the usual martingale arguments for convergence of mean empirical measures cannot be applied. We surmount this obstacle by demonstrating the convergence of the generators of an augmented Markovian model which incorporates the age processes of the renewal interarrival times and downtimes. We also establish long-run average moment bounds of the diffusion-scaled queueing processes under some (modified) priority scheduling policies. This is accomplished via Foster–Lyapunov equations for the augmented Markovian model.
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DOI:
10.1016/j.peva.2019.102039
发表时间:
2017-12
期刊:
Perform. Evaluation
影响因子:
--
作者:
H. M. Jansen;M. Mandjes;K. D. Turck;S. Wittevrongel
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DOI:
10.1137/18m1166717
发表时间:
2018-01
期刊:
SIAM J. Control. Optim.
影响因子:
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作者:
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通讯作者:
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影响因子:
1.4
作者:
Arapostathis, Ari;Pang, Guodong
通讯作者:
Pang, Guodong
影响因子:
1.2
作者:
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通讯作者:
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DOI:
10.1287/moor.1090.0404
发表时间:
2009
期刊:
Math. Oper. Res.
影响因子:
--
作者:
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通讯作者:
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