Question

What is the difference between 'preemptive' and 'non-preemptive' scheduling?

Q: Answer-What is the difference between 'preemptive' and 'non-preemptive' scheduling?

Preemptive scheduling Round Robin, Preemptive Priority allows the OS to forcibly remove a process from the CPU better for interactive systems and real-time requirements. Non-preemptive FCFS, SJF non-preemptive a process holds the CPU until it completes or blocks for IO. Preemptive is standard in modern OS Windows, Linux. Non-preemptive is simpler but risks monopolization. Context switching overhead is higher in preemptive systems.

A Preemptive scheduling runs on multi-core CPUs; non-preemptive runs on single-core only

B Preemptive scheduling is used for I/O-bound processes; non-preemptive scheduling is used for CPU-bound processes

C In preemptive scheduling, a process runs until it voluntarily releases the CPU ; in non-preemptive, the OS can interrupt a running process and assign CPU to another

D Preemptive scheduling uses FIFO; non-preemptive scheduling uses priority queues

E In preemptive scheduling, the OS can interrupt a running process and assign CPU to another; in non-preemptive, a process runs until it voluntarily releases the CPU

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