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arXiv 1408.4192math.PR
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具有门限服务策略的优先级轮询系统的高负荷服务渐近性

Heavy-traffic Asymptotics of Priority Polling System with Threshold Service Policy

Zaiming Liu, Yuqing Chu, Jinbiao Wu

摘要:

本文利用奇异摄动方法研究了由三个M/M/1队列组成的具有门限策略的优先级轮询系统的高负荷服务行为。结果表明,临界负载队列的标度队列长度是指数分布的,与稳定队列的标度队列长度无关。此外,稳定队列的队列长度具有与N策略休假的优先级轮询系统相同的分布。基于这一事实,我们给出了休假轮询系统的精确尾渐近性来近似稳定队列队列长度的尾分布,表明它与经典的M/M/1强占型优先权队列具有相同的前因子和衰减率.最后,通过随机模拟对上述结果进行了检验。

英文摘要:

In this paper, by the singular-perturbation technique, we investigate the heavy-traffic behavior of a priority polling system consisting of three M/M/1 queues with threshold policy. It turns out that the scaled queue-length of the critically loaded queue is exponentially distributed, independent of that of the stable queues. In addition, the queue lengths of stable queues possess the same distributions as a priority polling system with N-policy vacation. Based on this fact, we provide the exact tail asymptotics of the vacation polling system to approximate the tail distribution of the queue lengths of the stable queues, which shows that it has the same prefactors and decay rates as the classical M/M/1 preemptive priority queues. Finally, a stochastic simulation is taken to test the results aforementioned.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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