What is a process queue and how does it work?

What is a process queue and how does it work?

A process queue is a data structure used by the operating system to manage and schedule processes. It is a collection of processes waiting to be executed by the CPU.

The process queue works by following a specific scheduling algorithm, such as First-Come-First-Served (FCFS), Shortest Job Next (SJN), Round Robin (RR), or Priority Scheduling. When a process is created or becomes ready to execute, it is added to the appropriate queue based on the scheduling algorithm.

The operating system then selects a process from the queue and allocates the CPU to it for execution. Once the process completes its execution or is interrupted, it is removed from the queue. The next process in the queue is then selected for execution, and the cycle continues.

The process queue ensures fairness and efficiency in utilizing the CPU by managing the order in which processes are executed. It helps prevent resource conflicts and allows the operating system to prioritize processes based on their importance or urgency.