Preemptive vs Cooperative

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Two fundamental approaches to CPU scheduling. Preemptive scheduling allows the OS to forcibly interrupt a running process to give CPU time to another, ensuring fairness. Cooperative scheduling relies on processes voluntarily yielding the CPU, risking starvation if a process misbehaves.

Key Properties

• OS-Controlled Preemption
• Voluntary Yielding
• Time Quantum

Related

• Scheduling Algorithms (most modern algorithms are preemptive)
• Green Threads and Fibers (typically use cooperative scheduling)

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operating-systems scheduling