OS Concepts · Chapter 5

Multilevel Feedback Queue

Three queues of decreasing priority and increasing quantum — a job that doesn't finish drops a level.

Parameters

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Process table

Burst time is required. Arrival time shifts when the process joins the ready queue.

ProcessArrivalBurstPriority

Multilevel Feedback Queue

CPU idle

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t=0 Speed
ProcessArrivalBurstFinishTurnaroundWaitingResponse