On the stability of a class of non-monotonic systems of parallel queues
On the stability of a class of non-monotonic systems of parallel queues
复制标题
一类并行队列非单调系统的稳定性
DOI:
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发表时间:
2015
期刊:
影响因子:
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通讯作者:
P. Moyal
中科院分区:
文献类型:
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作者:
P. Moyal
We investigate, under general stationary e‘rgodic assumptions, the stability of systems of S parallel queues in which any incoming customer joins the queue of the server having the p + 1-th shortest workload (p < S), or a free server if any. This change in the allocation policy makes the analysis much more challenging with respect to the classical FCFS model with S servers, as it leads to the non-monotonicity of the underlying stochastic recursion. We provide sufficient conditions for the existence of a stationary workload, which indicate a “splitting” of the system in heavy traffic, into a loss system of p servers (that is, a system with p servers and no waiting room), plus a FCFS system of S − p servers. To prove this result, we show en route an original sufficient condition for the existence and uniqueness of a stationary workload for a multiple-server loss system.