IN this chapter we continue the study of MlGjl q ueueing models. In particular, we will study the influence of various new scheduling disciplines, in comparison to the FCFS
scheduling we have addressed in Chapter 5. We address non-preemptive priority scheduling in Section 6.1 and preemptive priority scheduling in Section 6.2. A limiting case of the non-preemptive priority scheduling is shortest job next scheduling, which is discussed in Section 6.3.