Operating Systems - Context Switch - Cost & Causes
In a real-time system with strict deadlines, which context switching strategy minimizes latency for high-priority tasks?
In a real-time system with strict deadlines, which context switching strategy minimizes latency for high-priority tasks?
hard⚖️ Approach Comparison Q8 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand real-time constraints
Real-time systems require minimal latency for high-priority tasks, achieved by preemptive scheduling.Step 2: Evaluate other options
Non-preemptive scheduling delays high-priority tasks, increasing latency. Round-robin scheduling provides fairness but not minimal latency. Batch scheduling is unrelated to latency minimization.Final Answer:
Option C -> Option CQuick Check:
Preemption reduces latency for urgent tasks [OK]
Quick Trick: Preemptive scheduling minimizes latency for high-priority tasks [OK]
Common Mistakes:
MISTAKES- Choosing non-preemptive to reduce overhead ignoring latency
- Preferring round-robin fairness over latency
- Misunderstanding batch scheduling's role
Trap Explanation:
PITFALL- Candidates may prioritize overhead reduction or fairness over real-time latency needs.
Interviewer Note:
CONTEXT- Tests application of context switching in real-time constraints.
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