Operating Systems - Process vs Thread - Key Differences
What is a common reason that using multiple threads within a single process might lead to worse performance than using multiple separate processes?
What is a common reason that using multiple threads within a single process might lead to worse performance than using multiple separate processes?
medium💡 Conceptual Thinking Q5 of Q15
Step-by-Step Solution
Solution:
Step 1: Analyze thread resource sharing
Threads share memory and resources, which can cause contention and require synchronization.Step 2: Understand synchronization overhead
Synchronization primitives like locks add overhead and can degrade performance if contention is high.Final Answer:
Option D -> Option DQuick Check:
Contention and synchronization slow down multithreaded programs [OK]
Quick Trick: Shared resources cause contention and synchronization overhead [OK]
Common Mistakes:
MISTAKES- Incorrectly stating threads have separate memory spaces
- Assuming processes share memory making them faster
- Believing threads cannot run on multiple cores
Trap Explanation:
PITFALL- Option B is wrong because threads share memory; option D is false as threads can run in parallel.
Interviewer Note:
CONTEXT- Evaluates understanding of synchronization overhead and resource contention in multithreaded programs.
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