What are the differences between FCFS and other scheduling algorithms?

What are the differences between FCFS and other scheduling algorithms?

FCFS, or First-Come, First-Served, is a simple scheduling algorithm where the first process to arrive is the first to be executed. Unlike other algorithms like SJF (Shortest Job First) or RR (Round Robin), FCFS does not prioritize tasks based on their length or urgency.

What are the advantages of using FCFS?

The main advantages of FCFS are its simplicity and fairness, as it treats all processes equally without prioritization. However, it can lead to the 'convoy effect,' where shorter processes wait for longer ones.

How does FCFS compare to Round Robin?

FCFS processes tasks in the order they arrive, while Round Robin allocates a fixed time slice to each process, allowing for better responsiveness in time-sharing systems. Round Robin can reduce wait times for shorter tasks.

Are there any scenarios where FCFS is preferred?

Yes, FCFS is often preferred in batch processing systems where tasks are similar in length and fairness is prioritized over response time.

What are the disadvantages of FCFS?

The main disadvantages of FCFS include the potential for long wait times and the convoy effect, where shorter tasks are delayed by longer ones, leading to inefficient CPU utilization.