Performance Tuning · interview question
A checkout endpoint slows down during peak traffic, but heap usage returns close to baseline after each spike. What is the most likely JVM issue?
Multiple choiceEasychapter-14-curatedpremiumperformance-tuningallocation-churn
Answer and explanation
Correct answer
C. High allocation churn is creating extra GC pressure
Why
A service can suffer from heavy temporary allocation even when steady-state heap size looks stable. Creating many short-lived objects increases GC work and CPU cost, which can raise latency under load.
Test yourself on Performance Tuning
A free test with instant, explained results. No account needed.
More Performance Tuning questions
- In a system using the Z Garbage Collector (ZGC), what is a notable advantage compared to traditional Stop-The-World…
- How would you explain a common cause of a 'java.lang.OutOfMemoryError: Metaspace' error in a JVM application in an…
- How would you explain a key advantage of the Z Garbage Collector (ZGC) over traditional garbage collectors in an…
- CPU is pinned and requests are hanging. Which artifact tells you what threads are doing right now?
- What does the Z Garbage Collector (ZGC) mainly aim to achieve?
- In the context of JVM garbage collection, what is the main benefit of using the G1 Garbage Collector over traditional…