Using Robust Queueing to Expose the Impact of Dependence in Single-Server Queues
扩展了鲁棒排队方法,用于处理单服务器队列中到达间隔和服务时间之间的依赖性,提出了新的稳态工作量近似公式,在M/GI/1模型中精确,且在重流量和轻流量下渐近正确,仿真验证了其有效性。
Queueing applications are often complicated by dependence among interarrival times and service times. Such dependence is common in networks of queues, where arrivals are departures from other queues or superpositions of such complicated processes, especially when there are multiple customer classes with class-dependent service-time distributions. We show that the robust queueing approach for single-server queues proposed in the literature can be extended to yield improved steady-state performance approximations in the standard stochastic setting that includes dependence among interarrival times and service times. We propose a new functional robust queueing formulation for the steady-state workload that is exact for the steady-state mean in the M/GI/1 model and is asymptotically correct in both heavy traffic and light traffic. Simulation experiments show that it is effective more generally. The online appendix is available at https://doi.org/10.1287/opre.2017.1649 .