QUEUEING THEORY
A flow of customers form finite\infinite population towards the service facilities form the queue (waiting line) on account of lack of capability to serve them all at a time. In the absence of a perfect balance between the service facilities and the customers, waiting time is required either for the service facilities or for the customer’s arrival. The arriving unit that requires some service to be performed is called customer. The customer may be person, vehicles, machines, etc. Queue stands for the number of customer’s waiting to be serviced. This does not include the customer being serviced. The process or system that performs services to the customers is termed by service channel or service facility. QUEUEING SYSTEM A queuing system can be completely described by (i) The input (arrival pattern) (ii) The service mechanism) (iii) The queue discipline, and (iv) Customer’s behavior. THE INPUT (ARRIVAL PATTERN) The input describes the way in which the customer’s arrived and joi...