Analysis of simulations of a queue in a faculty bar using Omnet++.
Consider a system that manages the orders of customers in a bar. Orders are issued to a cashier, which has two queues: one for normal users and one for VIP users. VIP users have non-preemptive priority over normal users. Users belonging to the same queue are served according to a FIFO policy. Orders can be of simple or compound type. Simple orders are completed directly by the cashier, with a service rate r_cashier. Composite orders are first served by the cashier, with a service rate r_cashier, and then are passed to the kitchen, which queues them and serves them in FIFO order, with a service rate r_kitchen: Both normal and VIP users can issue both types of orders.