How does FCFS affect response time?

Can you explain how the First-Come, First-Served (FCFS) scheduling algorithm affects response time?

Sure! FCFS is a non-preemptive scheduling algorithm where the first process to arrive is the first to be executed. This can lead to longer response times, especially if a long process is at the front of the queue.

Why does a long process at the front increase the response time for others?

When a long process is being executed, all subsequent processes must wait until it completes. This can lead to increased waiting times for shorter processes, resulting in higher average response times.

Are there any scenarios where FCFS is beneficial?

Yes, FCFS can be beneficial in scenarios where tasks are of similar length, as it is simple to implement and can provide fairness in processing order.

What are some alternatives to FCFS that might improve response time?

Alternatives like Shortest Job Next (SJN) or Round Robin can improve response times by prioritizing shorter tasks or allowing time-sharing among processes.