What is shortest job first scheduling algorithm in OS?
Table of Contents
- 1 What is shortest job first scheduling algorithm in OS?
- 2 Which algorithm among round robin and shortest job first resulted in less average waiting time and why?
- 3 Which scheduling is most suitable for time shared OS?
- 4 What is shortest job first algorithm?
- 5 Which scheduling algorithm has the advantage of minimum waiting time?
What is shortest job first scheduling algorithm in OS?
Shortest Job First (SJF) is an algorithm in which the process having the smallest execution time is chosen for the next execution. This scheduling method can be preemptive or non-preemptive. It significantly reduces the average waiting time for other processes awaiting execution.
Which scheduling policy is most suitable for a time shared operating system shortest job first elevator round robin?
Explanation: Shortest Job First is an optimal solution for non-preemptive scheduling. Hence the sequence should be 3,2,1.
Which algorithm among round robin and shortest job first resulted in less average waiting time and why?
In this algorithm, the process with the least burst time is processed first….2. Round-Robin (RR) :
| Shortest Job First (SJF) | Round-Robin (RR) |
|---|---|
| SJF is also non-preemptive but its preemptive version is also there called Shortest Remaining Time First (SRTF) algorithm. | Round-Robin (RR) is preemptive in nature. |
Which scheduling policy is not suitable for a time shared operating system?
Discussion Forum
| Que. | Which scheduling policy is most suitable for time shared operating system? |
|---|---|
| b. | FCFS |
| c. | LCFS |
| d. | Round robin |
| Answer:Round robin |
Explanation: Pre- emptive scheduling is the most suitable scheduling scheme for real time operating systems as it can always preempt other processes based on priority.
What is shortest job first scheduling in OS?
Shortest Job First (SJF) Scheduling in OS Shortest Job First is a Preemptive or Non-Preemptive algorithm. In the shortest job first algorithm, the job having shortest or less burst time will get the CPU first. It is the best approach to minimize the waiting time.
What is shortest job first algorithm?
Shortest Job First is a Preemptive or Non-Preemptive algorithm. In the shortest job first algorithm, the job having shortest or less burst time will get the CPU first. It is the best approach to minimize the waiting time.
What is shortest job first (SJF)?
Shortest job first (SJF) or shortest job next, is a scheduling policy that selects the waiting process with the smallest execution time to execute next. SJN is a non-preemptive algorithm. Shortest Job first has the advantage of having a minimum average waiting time among all scheduling algorithms. It is a Greedy Algorithm.
Which scheduling algorithm has the advantage of minimum waiting time?
Shortest Job first has the advantage of having a minimum average waiting time among all scheduling algorithms. It is a Greedy Algorithm. It may cause starvation if shorter processes keep coming. This problem can be solved using the concept of ageing.