Fcfs
| First-Come, First-Served (FCFS) is a scheduling algorithm that prioritizes the process or request that comes first. FCFS is a simple algorithm that is easy to implement, but it can cause problems if there are processes with very different service time requirements. When a process arrives at the ready queue, it is added to the end of the queue. The scheduler then selects the process at the head of the queue to run. This process continues until it completes or is preempted. When the process completes, it is removed from the queue. The main advantage of FCFS is its simplicity. It is easy to understand and implement. Additionally, FCFS can be used in real-time systems where processes must be completed in a timely manner. However, FCFS can also lead to problems. If there are processes with very different service time requirements, the shorter processes will have to wait a long time for the longer processes to complete. This can cause delays and lead to poor performance. Additionally, FCFS can cause starvation if there is a process with a very long service time requirement. This process will never be able to run because shorter processes will always be ahead of it in the queue. Overall, FCFS is a simple scheduling algorithm that has some advantages and disadvantages. It is easy to understand and implement, but it can cause problems if there are processes with very different service time requirements. |
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