Operating Systems - Starvation vs Deadlock vs Livelock - Differences & Examples
In a scenario where two processes continuously change their states to avoid deadlock but fail to make progress, what is the key difference between this and a deadlock?
In a scenario where two processes continuously change their states to avoid deadlock but fail to make progress, what is the key difference between this and a deadlock?
medium🧠🧾 Concept Trace Q4 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand deadlock vs livelock
Deadlock: processes blocked, no state changes.
Livelock: processes actively change states but no progress.Step 2: Evaluate options
In deadlock, processes are blocked; in livelock, processes are actively changing states. correctly states the key difference.
Deadlock involves priority inversion; livelock does not. is incorrect; priority inversion is unrelated.
Livelock requires resource preemption; deadlock does not. is false; livelock does not require preemption.
Deadlock can be resolved by aging; livelock cannot. is incorrect; aging is for starvation prevention.Final Answer:
Option D -> Option DQuick Check:
Deadlock = blocked; Livelock = active but stuck [OK]
Quick Trick: Deadlock blocked; livelock active but no progress [OK]
Common Mistakes:
MISTAKES- Confusing priority inversion with deadlock
- Assuming livelock needs preemption
- Misapplying aging to livelock
Trap Explanation:
PITFALL- Candidates often confuse active state changes in livelock with deadlock's blocked state, missing the fundamental difference.
Interviewer Note:
CONTEXT- Probes subtle understanding of livelock vs deadlock behavior.
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