FCFS Scheduling Algorithm: Gantt Chart and Average Waiting Time Calculation

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15 Questions

Draw ______ chart and calculate the average waiting time if the FCFS scheduling algorithm is followed.

Gantt

In FCFS scheduling, what does FCFS stand for? First-Come, First-______.

Served

The ______ chart visually represents the execution of processes over time in FCFS scheduling.

Gantt

Calculate the average waiting time for processes in FCFS scheduling by analyzing the ______ chart.

Gantt

In FCFS scheduling, processes are executed in the order of their ______ time.

Arrival

Draw ______ chart and calculate the average waiting time if the FCFS scheduling algorithm is followed.

Gantt

Soha A. is studying the ______ scheduling algorithm.

FCFS

In CPU scheduling, what does FCFS stand for? First Come, First ______.

Served

For FCFS scheduling, the process that arrives first is the one that gets executed ______.

first

To analyze the efficiency of FCFS, one can use a ______ chart.

Gantt

The average waiting time for the three processes is (6 + ______ + 3) / 3 milliseconds

0

The average turnaround time is ((30 - ______) + (3 - 0) + (6 - 0)) / 3 milliseconds

0

Three processes arrive at time ______

zero

The average response time is (6 + ______ + 3) / 3 milliseconds

0

Mohamed Lecture 04 focuses on CPU ______

Scheduling

Study Notes

CPU Scheduling and Gantt Chart

  • Three processes (P1, P2, P3) arrive at time zero with burst times of 24, 3, and 3 milliseconds respectively.
  • The First-Come-First-Served (FCFS) scheduling algorithm is used.

Process Details

  • Process P1: burst time of 24 milliseconds
  • Process P2: burst time of 3 milliseconds
  • Process P3: burst time of 3 milliseconds

Performance Metrics

  • Average Waiting Time (AWT): (6 + 0 + 3) / 3 = 3 milliseconds
  • Average Turnaround Time (ATT): ((30 - 0) + (3 - 0) + (6 - 0)) / 3 milliseconds
  • Average Response Time (ART): (6 + 0 + 3) / 3 = 3 milliseconds

Learn to draw a Gantt chart and compute the average waiting time when using the First-Come, First-Served (FCFS) scheduling algorithm in operating systems. Test your understanding with this quiz by Soha A.

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