[Solved] In which scenario is non-preemptive SJF scheduling more suitable than preemptive SJF? - Ans: When minimizing context switches is critical | Operating Systems

Operating Systems - Shortest Job First (SJF) - Preemptive vs Non-Preemptive

In which scenario is non-preemptive SJF scheduling more suitable than preemptive SJF?

AWhen minimizing context switches is critical

BWhen process burst times are known and processes arrive simultaneously

CWhen processes frequently arrive with shorter burst times during execution

DWhen fairness among processes is the highest priority

Step-by-Step Solution

Solution:

Step 1: Analyze context switch impact in scheduling
Non-preemptive SJF avoids context switches during process execution, reducing overhead.
Final Answer:
Option A -> Option A
Quick Check:
Non-preemptive SJF minimizes context switches by running processes to completion [OK]

Quick Trick: Non-preemptive SJF reduces context switches [OK]

Common Mistakes:

MISTAKES

Trap Explanation:

PITFALL

Candidates often overlook the cost of context switches and assume preemptive is always better.

Interviewer Note:

CONTEXT

Evaluates understanding of trade-offs between preemptive and non-preemptive scheduling.

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