16  Queuing Theory

Phil Whiting


Some Queuing Problems

Queuing is a ubiquitous feature of electronic systems such as computers and communication networks. Queues will build up, even if the capacity of the system exceeds the load on it. This is an inevitable consequence of the fact that arrivals and services take place in a random fashion. Indeed, the more random the services and the arrivals are, the more queues build up. Thus, it is possible for long queues to develop at even light loads, arising as a consequence of sheer variability in the pattern of arrivals and services.

If the queue length distribution does not depend on time, the queue is said to be in equilibrium. This is only possible if the queue’s capacity is not exceeded. ...

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