Computer system performance analysis : simulation and modeling

الملخص EN

A process is a program in execution.

As processes enter the system, they are put into a job queue, which consists of all processes in the system.

The operating system must select processes from those queues in some fashion called scheduling.

There are many queuing algorithms to select the next process.

A process terminates when it finishes executing its final statement.

In this study, we implemented adiscrete-event simulation techniques and applied it to three different queuing disciplines.

Computational simulation provides a decisions-maker with some information alternatives.

According to the statistical criteria we could identify the best discipline that fits to the problem.

We got some simulation results which are quite interesting and help understand the nature of the scheduling algorithms of the operating systems.

The selection of the appropriate discipline among others is quite complex and it is dependent on the nature of the environment of the problem and on the problem's data.