First Come First Served Scheduling
First Come First Served (FCFS) is a non-preemptive CPU scheduling algorithm used in operating systems, where processes are executed in the order they arrive in the ready queue. It is one of the simplest scheduling methods, operating on a first-in, first-out (FIFO) basis without priority considerations. This approach is straightforward to implement but can lead to inefficiencies like the convoy effect, where short processes wait behind long ones.
Developers should learn FCFS as a foundational concept in operating system design, particularly for understanding basic process management and scheduling principles. It is useful in scenarios where simplicity and fairness in order of arrival are prioritized, such as in batch processing systems or as a baseline for comparing more advanced algorithms. However, it is generally avoided in interactive systems due to its poor average waiting time and lack of responsiveness.