Podcast
Questions and Answers
Draw Gantt chart and calculate the average waiting time the of ______ scheduling algorithm is followed.
Draw Gantt chart and calculate the average waiting time the of ______ scheduling algorithm is followed.
FCFS
Soha A. is studying the average waiting time of the ______ scheduling algorithm.
Soha A. is studying the average waiting time of the ______ scheduling algorithm.
FCFS
In CPU scheduling, the Gantt chart helps visualize the ______ of processes.
In CPU scheduling, the Gantt chart helps visualize the ______ of processes.
execution
The FCFS algorithm follows a ______ approach to scheduling processes.
The FCFS algorithm follows a ______ approach to scheduling processes.
Calculating the average waiting time is essential to evaluate the efficiency of the ______ algorithm.
Calculating the average waiting time is essential to evaluate the efficiency of the ______ algorithm.
Draw ______ chart and calculate the average waiting time if the FCFS scheduling algorithm is followed.
Draw ______ chart and calculate the average waiting time if the FCFS scheduling algorithm is followed.
Soha A. is analyzing the FCFS scheduling algorithm to determine the average ______ time.
Soha A. is analyzing the FCFS scheduling algorithm to determine the average ______ time.
In CPU scheduling, the abbreviation FCFS stands for First-Come, First-______.
In CPU scheduling, the abbreviation FCFS stands for First-Come, First-______.
One way to visually represent the sequence of processes in FCFS scheduling is through a ______ chart.
One way to visually represent the sequence of processes in FCFS scheduling is through a ______ chart.
If the FCFS algorithm is followed, the process that arrives first is the one that will be ______ first.
If the FCFS algorithm is followed, the process that arrives first is the one that will be ______ first.
In CPU Scheduling, the process with the shortest _______ is selected next in FCFS algorithm.
In CPU Scheduling, the process with the shortest _______ is selected next in FCFS algorithm.
The Gantt chart visually represents the ________ of processes in the system.
The Gantt chart visually represents the ________ of processes in the system.
The average waiting time for the processes in the given example is ______ milliseconds.
The average waiting time for the processes in the given example is ______ milliseconds.
The average turnaround time for the processes in the given example is ______ milliseconds.
The average turnaround time for the processes in the given example is ______ milliseconds.
The average response time for the processes in the given example is ______ milliseconds.
The average response time for the processes in the given example is ______ milliseconds.
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Study Notes
CPU Scheduling: FCFS Algorithm
- FCFS (First-Come-First-Served) scheduling algorithm is used to schedule three processes P1, P2, and P3 arriving at time zero.
- Process ID and Burst Time (BT) for each process are:
- P1: BT = 24
- P2: BT = 3
- P3: BT = 3
- A Gantt chart is drawn to visualize the scheduling process.
Gantt Chart Analysis
- The Gantt chart shows the execution sequence of the processes: P1 -> P2 -> P3
- Waiting time for each process is:
- P1: 0 milliseconds (starts execution immediately)
- P2: 6 milliseconds (waits for P1 to finish)
- P3: 9 milliseconds (waits for P1 and P2 to finish)
Performance Metrics
- Average Waiting Time: (0 + 6 + 3) / 3 = 3 milliseconds
- Average Turnaround Time: ((30 - 0) + (3 - 0) + (6 - 0)) / 3 = 13 milliseconds
- Average Response Time: (6 + 0 + 3) / 3 = 3 milliseconds
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