Question

Assume a system in which the typical interaction time is 90 milliseconds. The CPU scheduler uses round-robin scheduling. Why is it not a good idea to set the quantum length to be 1 second in this system?

Answer 1

Answer:

It is given that interaction time is 90 milliseconds and now if quantum length to be 1 second then the interaction time would be greater than quantum time, which is not a good idea at all, here are some reasons for this claim:

• If indeed the quantity of time is lesser in comparison to typical interaction time, this would result in regular repetitive contextual switches resulting in a lot of CPU usage overload and depletion.
• This would relate to less capacity as well.
• But the size of the quantum must be greater than the typical time of interaction.
• The quantum of time must also not be too high. In any circumstance, Round Robin scheduling activity would appear to schedule FCFS.