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首页> 外文期刊>IEEE Transactions on Automatic Control >Optimal Dynamic Allocation of Collaborative Servers in Two Station Tandem Systems
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Optimal Dynamic Allocation of Collaborative Servers in Two Station Tandem Systems

机译:两站级联系统中协同服务器的最佳动态分配

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摘要

We consider two-stage tandem queueing systems with one dedicated server in each station and a flexible server that can serve both stations. We assume exponential service times, linear holding costs accrued by jobs present in the system, and a collaborative work discipline. We seek optimal server allocation strategies for systems without external arrivals (clearing systems). When the combined rate of collaborating servers is less than the sum of their individual rates (partial collaboration), we identify conditions under which the optimal server allocation strategy is non-idling and has a threshold-type structure. Our results extend previous work on systems with additive service rates. When the aforementioned conditions are not satisfied we show by examples that the optimal policy may have counterintuitive properties, which is not the case when a fully collaborative service discipline is assumed. We also obtain novel results for any type of collaboration when idling policies may be optimal.
机译:我们考虑两阶段串联排队系统,每个站都有一个专用服务器,而一个可以为两个站服务的灵活服务器。我们假设指数服务时间,系统中存在的工作所产生的线性持有成本以及协作工作纪律。我们为没有外部设备(清算系统)的系统寻求最佳的服务器分配策略。当协作服务器的组合速率小于它们各自的速率之和(部分协作)时,我们确定最佳服务器分配策略为非空闲且具有阈值类型结构的条件。我们的结果扩展了以前对具有附加服务费率的系统的工作。当不满足上述条件时,我们通过示例表明最佳策略可能具有违反直觉的属性,而假定完全协作的服务学科则不是这种情况。当闲置策略可能是最佳选择时,我们还可以针对任何类型的协作获得新颖的结果。

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