What are the differences between round-robin and SJN scheduling algorithms?

What are the differences between round-robin and SJN scheduling algorithms?

Round-robin scheduling allocates a fixed time slice to each process in a cyclic order, while SJN (Shortest Job Next) prioritizes processes with the shortest execution time.

Which one is more efficient in terms of average waiting time?

SJN is generally more efficient for minimizing average waiting time because it processes shorter jobs first, reducing the time longer jobs have to wait.

Are there any drawbacks to using SJN?

Yes, SJN can lead to starvation for longer processes if shorter processes keep arriving, as they may never get executed.

How does round-robin handle process starvation?

Round-robin prevents starvation by ensuring that each process gets a chance to execute in a fixed time interval, promoting fairness.

In what scenarios would you recommend using round-robin?

Round-robin is ideal for time-sharing systems where fairness and responsiveness are crucial, such as in interactive applications.