1. What Is Turnaround Time In FCFS?

Turnaround Time in First-Come-First-Served (FCFS) scheduling is the total time taken from when a process arrives until it completes execution. It represents the total time a process spends in the system, including waiting time and execution time.

2. How Does The Calculator Work?

The calculator uses the FCFS Turnaround Time formula:

Where:

• \( \text{Completion Time} \) — Time when the process finishes execution
• \( \text{Arrival Time} \) — Time when the process arrives in the ready queue

Explanation: In FCFS scheduling, processes are executed in the order they arrive. The turnaround time measures the total time a process spends in the system from arrival to completion.

3. Importance Of Turnaround Time Calculation

Details: Turnaround time is a critical performance metric in operating systems that helps evaluate the efficiency of CPU scheduling algorithms. Lower turnaround times generally indicate better system performance and user satisfaction.

4. Using The Calculator

Tips: Enter completion time and arrival time in the same time units. Ensure completion time is greater than or equal to arrival time. All values must be non-negative numbers.

5. Frequently Asked Questions (FAQ)

Q1: What Is The Difference Between Turnaround Time And Waiting Time?
A: Turnaround time is the total time from arrival to completion, while waiting time is the time a process spends waiting in the ready queue before execution begins.

Q2: Why Is FCFS Considered Non-Preemptive?
A: FCFS is non-preemptive because once a process starts execution, it continues until completion without being interrupted by newly arriving processes.

Q3: What Are The Advantages Of FCFS Scheduling?
A: FCFS is simple to implement, fair to all processes, and doesn't require complex calculations. It works well for batch systems where response time isn't critical.

Q4: What Are The Disadvantages Of FCFS Scheduling?
A: FCFS can lead to convoy effect, poor response times for short processes that arrive after long ones, and generally higher average waiting times compared to other algorithms.

Q5: How Does FCFS Compare To Other Scheduling Algorithms?
A: FCFS is simpler but generally less efficient than algorithms like SJF (Shortest Job First) or Round Robin, which provide better average waiting times and response times.