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Scheduling (Multi-level Feedback Queues (number of queues increased,…
Scheduling
Scheduler
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moves into running state and either finishes and leave system or blocked due to input/output demand or run out of time
if blocked ,goes back to ready queue after
First Come, First Served
process executed in order of arrival, like a queue
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Round Robin
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if process is nit complete after time slice, it returns to back of queue and next is run
execute in order of arrival, but can be halted if runs out of time
Shortest Remaining Time
similar to shortest job first, but is preemptive; process can be suspended if higher priority process joins queue
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Process Blocked
if process requires input/output mid-run, prcoess is blocked until request is serviced
while process is blocked, next process is run
after process receives request, interrupt generated, process returns to ready queue
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