Day 01Part 18- Operating system- Process State Diagram new ready running waiting and termination

Day 01Part 18- Operating system- Process State Diagram new ready running waiting and termination

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​In operating systems, a process state diagram illustrates the various stages a process undergoes during its lifecycle. Understanding these states is crucial for grasping how an operating system manages and schedules processes.​

Primary Process States:

1. New: The process is being created.​

2. Ready: The process is prepared to run and is waiting for CPU allocation.​

3. Running: The process is currently executing instructions on the CPU.​

4. Waiting (Blocked): The process cannot proceed until a specific event occurs (e.g., I/O completion).​

5. Terminated: The process has finished execution and is awaiting removal from memory.​

Process State Transitions:

• New → Ready: After creation, the process moves to the ready state, awaiting CPU time.​

• Ready → Running: The scheduler assigns CPU to the process, transitioning it to running.​

• Running → Waiting: If the process requires I/O or an event, it moves to waiting.​

• Waiting → Ready: Once the event is resolved, the process returns to ready.​

• Running → Terminated: Upon completion, the process terminates.​

• Running → Ready: In preemptive multitasking, a process may return to ready if interrupted.​

These states and transitions enable the operating system to manage multiple processes efficiently, ensuring optimal resource utilization and system performance.​

For a visual representation and more details, consider this resource:

Day 01Part 18- Operating system- Process State Diagram new ready running waiting and termination

OPERATING SYSTEM Lecture Notes On

Operating System