Preemptive multitasking is a key feature of modern operating systems that allows multiple tasks or processes to run concurrently on a single computer system.

Unlike cooperative multitasking, where each task voluntarily gives up control of the CPU, preemptive multitasking is controlled by the operating system, which allocates CPU time to each task based on priority levels. In preemptive multitasking, the operating system uses a scheduler to determine which task should run next.

This scheduler constantly monitors the system and switches between tasks based on their priority levels and the amount of CPU time they have used.

This ensures that no single task can monopolize the CPU, leading to a more efficient and responsive system. One of the main advantages of preemptive multitasking is that it allows for better resource management.

By controlling the allocation of CPU time, the operating system can prevent tasks from hogging resources and ensure that all tasks receive a fair share of the CPU.

This leads to improved system performance and responsiveness, even when running multiple resource-intensive applications simultaneously. Another benefit of preemptive multitasking is improved system stability.

Since the operating system controls the scheduling of tasks, it can quickly detect and handle issues such as crashes or unresponsive applications.

This helps prevent system freezes and crashes, providing a more reliable computing experience for users. Overall, preemptive multitasking plays a crucial role in modern operating systems, allowing for efficient resource management, improved system performance, and enhanced system stability.

By enabling multiple tasks to run concurrently and efficiently sharing system resources, preemptive multitasking helps create a seamless and responsive computing environment for users.