Performance Analysis of Two Priority Queuing Systems in Tandem
Source of Publication
American Journal of Operations Research
In this paper, we consider a tandem of two head-of-line (HOL) non-preemptive priority queuing systems, each with a single server and a deterministic service-time. Two classes of traffic are considered, namely high priority and low priority traffic. By means of a generating function approach, we present a technique to derive closed-form expressions for the mean buffer occupancy at each node and mean delay. Finally, we illustrate our solution technique with some numerical examples, whereby we illustrate the starvation impact of the HOL priority scheduling discipline on the performance of the low-priority traffic stream. Our research highlights the important fact that the unfairness of the HOL priority scheduling becomes even more noticeable at the network level. Thus this priority mechanism should be used with caution.
Scientific Research Publishing, Inc.
Computer Sciences | Physical Sciences and Mathematics
Kamoun, Faouzi, "Performance Analysis of Two Priority Queuing Systems in Tandem" (2012). All Works. 2661.
Indexed in Scopus
Open Access Type
Gold: This publication is openly available in an open access journal/series