Introduction

The purpose of this chapter is to introduce the user to modeling process with TANGRAM-II using a very simple example. By following this tutorial, the user will be able to:

The first example we choose to model is the M/M/1/k queueing system. In this system there is a maximum number of customers that may be stored in a queue. This model has two types of objects: a source of packets, and the queue with its server. Objects of each type will be instantiated to create the system model.

The source object generates packets to the server object from a Poisson distribution with rate $\lambda$ . The server object has a limited queue, and serves packets in FCFS order with exponentially-distributed service time. If a packet arrives at the server when the queue is full, the packet is dropped.

In the next sections we will present each one of the steps to create/evaluate a model:

Guilherme Dutra Gonzaga Jaime 2010-10-27