Process scheduling

This document discusses the simulation of CPU scheduling algorithms using Java. It implements the First Come First Serve (FCFS), Round Robin, Shortest Job First, and Shortest Remaining Time algorithms. Round Robin is designed for time-sharing and uses a time quantum to switch between processes in a circular ready queue. Shortest Job First selects the process with the shortest expected processing time, while Shortest Remaining Time favors the process with the shortest remaining time and can preempt the current process. Java was chosen as the programming language due to its rich GUI, object orientation, documentation capabilities, and popularity.

The document discusses different CPU scheduling algorithms used in operating systems. It provides an overview of scheduling concepts like processes waiting in the ready queue for CPU time, and the dispatcher that allocates the CPU to the selected process. It then describes in detail common scheduling algorithms like FCFS, SJF, priority scheduling, and round robin. It also discusses more advanced topics like multilevel queue scheduling, factors that influence algorithm performance like time quantum size, and methods for evaluating scheduling algorithms.

Task scheduling is needed to maintain every process that comes with a processor in parallel processing. In several conditions, not every algorithm works better on the significant problem. Sometimes FCFS algorithm is better than the other in short burst time while Round Robin is better for multiple processes in every single time. But we cannot predict what process will come after. Average Waiting Time is a standard measure for giving credit to the scheduling algorithm. Several techniques have been applied to maintain the process in order to make the CPU performance in normal. The objective of this paper is to compare three algorithms, FCFS, SJF and Round Robin. Finally, we know which algorithm is more suitable for the certain process.