Systems Simulation - Queuing Models
Simulation is often used in the analysis of queuing models.

Introduction
A simple but typical model is the single-server queue system.
In this model, the term “customer” refers to any type of entitythat can be viewed as requesting “service” from a system.
Some examples are production systems, repair andmaintenance facilities, communications and computersystems, transport and material-handling systems etc.

Introduction-cont.
Queuing models, whether solved analytically or throughsimulation, provide the analyst with a powerful tool fordesigning and evaluating the performance of queuing systems.
Typical measures of system performance are server utilization,length of waiting lines and delays of customers.
Quite often, the analyst or the decision maker is involved intradeoffs between server utilization and customer satisfactionin terms of line lengths and delays.

http://www.academia.edu/5303017/Systems_Simulation_Chapter_6_Queuing_Models_Systems_Simulation_Chapter_6_Queuing_Models