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Elements or Characteristics of Queuing System | BSc.CSIT | Fifth Semester

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elements of queuing systemCharacteristics or Elements of Queuing system
Simulation and Modeling Reference Notes
Fifth Semester | Third year
BSc.CSIT | Tribhuvan University (TU)

Elements of queuing system
In order to model queuing systems, we first need to be a bit more precise about what constitutes a queuing system. The three basic elements common to all queuing systems are:

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Alongside these basic elements of queuing systems, we can include other elements also, and they are as follows;

Population of Customer:
Customer are the entities who wants service from the server. It can be considered either limited (closed system) or unlimited (open system). In systems with a large population of potential customers, the calling population is usually assumed to be finite or infinite. Examples of infinite populations include the potential customers of a restaurant, bank, etc.

The main difference between finite and infinite population models is how the arrival rate is defined. In an infinite-population model, the arrival rate is not affected by the number of customers who have left the calling population and joined the queuing systems. On the other hand, for finite calling population models, the arrival rate to the queuing system does depend on the number of customers being served and waiting.

Output represents the way customers/entities leave the system. Output is mostly ignored by theoretical models but sometimes the customers leaving the server enter the queue again.

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