Operating Systems - Process vs Thread - Key Differences
In a system with many short-lived tasks, which factor most influences whether using threads or processes yields better overall throughput?
In a system with many short-lived tasks, which factor most influences whether using threads or processes yields better overall throughput?
medium🪤 Complexity Trap Q6 of Q15
Step-by-Step Solution
Solution:
Step 1: Compare creation overhead
Thread creation is generally cheaper than process creation.Step 2: Compare context switch overhead
Thread context switches are lighter because they share memory and resources.Step 3: Evaluate options
The overhead of context switching between threads is lower than between processes correctly identifies context switch overhead as a key factor favoring threads.Final Answer:
Option C -> Option CQuick Check:
Thread context switches are cheaper than process switches [OK]
Quick Trick: Thread context switches are cheaper than process switches [OK]
Common Mistakes:
MISTAKES- Assuming thread creation is more expensive than process creation
- Believing processes share memory to reduce overhead
Trap Explanation:
PITFALL- Candidates confuse creation overhead with context switch overhead and memory sharing.
Interviewer Note:
CONTEXT- Assesses understanding of overhead trade-offs in task scheduling.
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