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arXiv 1301.6364math.PR
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并行队列的一个路径比较结果

A pathwise comparison result for parallel queues

Pascal Moyal

摘要:

我们介绍了适当的框架下一般平稳遍历假设的多个服务器队列的路径比较。我们在什么意义上,它是更好地有更多的服务器FCFS(“先来,先服务”)下的系统,或等价的,在一个系统中的并行队列的JSW(“加入最短的工作负载”)分配政策的队列。这个比较结果是基于Kiefer和Wolfowitz的递归表示,以及Schur-凸半序的非质量保守推广。我们还表明,后者的结果并不成立,在一般情况下,为较大的系统类应用的半循环分配政策引入Scheller-Wolf在\cite{SW03}。

英文摘要:

We introduce the appropriate framework for pathwise comparison of multiple server queues under general stationary ergodic assumptions. We show in what sense it is better to have more servers for a system under FCFS ('First Come, First Served') or equivalently, more queues in a system of parallel queues under the JSW ('Join the Shortest Workload') allocation policy. This comparison result is based on the recursive representation of Kiefer and Wolfowitz, and on a non-mass conservative generalization of the Schur-Convex semi-ordering. We also show that the latter result does not hold true in general, for the larger class of systems applying the semi-cyclic allocation policy introduced by Scheller-Wolf in \cite{SW03}.

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