In a single server queuing problem with Poisson arrival and exponential service, first come, first served service discipline will produce a shorter queue length than last come, first served service discipline.

Question

Quizplus · Accepted Answer

The queue length is determined by arrival and service rates, not the service discipline. Both FCFS and LCFS will have the same average queue length under the same conditions.

In a Single Server Queuing Problem with Poisson Arrival and Exponential