Shortest Job First (SJF) CPU Scheduling Algorithm || SJF Example 1 || Operating System

In this video, we explain the Shortest Job First (SJF) CPU Scheduling Algorithm in Operating Systems with a step-by-step solved example. SJF is a non-preemp...

Shortest Job First (SJF) CPU Scheduling Algorithm || SJF Example 1 || Operating System
THE GATEHUB
1.3K views • Jan 10, 2026
Shortest Job First (SJF) CPU Scheduling Algorithm || SJF Example 1 || Operating System

About this video

In this video, we explain the Shortest Job First (SJF) CPU Scheduling Algorithm in Operating Systems with a step-by-step solved example.

SJF is a non-preemptive CPU scheduling algorithm that selects the process with the smallest burst time, making it optimal for minimizing average waiting time.

📘 Topics Covered:
✅ What is SJF Scheduling Algorithm?
✅ Types of SJF (Non-Preemptive vs Preemptive overview)
✅ Assumptions and working of SJF
✅ SJF Example (Solved Step by Step)
✅ Gantt Chart construction
✅ Calculation of Waiting Time
✅ Calculation of Turnaround Time
✅ Average Waiting Time & Turnaround Time
✅ Advantages and Disadvantages of SJF
✅ Why SJF gives minimum average waiting time
✅ Important points for GATE CS & university exams

This lecture is extremely useful for B.Tech / BCA / MCA students, GATE aspirants, and anyone preparing CPU scheduling numericals in Operating Systems.

👉 Watch till the end to master SJF scheduling problems, which are frequently asked in GATE, semester exams, and interviews.
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1.3K

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Duration

4:14

Published

Jan 10, 2026

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