Free CPU scheduling lessonsCPU scheduling · Stage 3 · Real schedulers · Step 1
Multilevel feedback queues
Let the scheduler learn which processes are interactive by watching how they use their turns. About 14 minutes.
Under a multilevel feedback queue, what happens to a process that uses its whole time quantum?
- AIt moves down one level, to a lower-priority queue
- BIt moves up a level as a reward
- CIt stays in the same queue
Show the answer
It moves down one level, to a lower-priority queue. Using the whole quantum suggests a long, CPU-bound burst.
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