Queueing models with service-rate control provide more realistic simulation results compared to simple M/M/1 models which have too much variability in the queue length. Because the variability in number in queue is increased by the unbounded nature of the exponential distribution, another approach modelers sometimes use is to select a bounded distribution, or to limit the maximum sample value by truncating the exponential distribution. This paper compares the beneficial effect of service-rate control and exponential distribution truncation. Simulation results demonstrate that models incorporating both mechanisms (truncated exponentials and service-rate control) generate the most realistic simulation results when rate adjustment is used to reduce queue-length peaks back to normal.
展开▼
机译：与服务速率控制的排队模型提供了更现实的仿真结果，而简单的M / M / 1型号相比，在队列长度上具有太多的可变性。 因为队列中的数量的可变性由指数分布的无限性增加，所以另一个方法建模有时使用是选择有界分布，或者通过截断指数分布来限制最大样本值。 本文比较了服务速率控制和指数分布截断的有益效果。 仿真结果表明，当使用速率调整将队列长度升高到正常时，将包含两个机制（截断指数和服务速率控制）的模型产生最逼真的模拟结果。
展开▼
