Performance Tuning · interview question
How does G1GC determine which regions of the heap to collect during a garbage collection cycle?
Multiple choiceHardchapter-14-curatedpremiumperformance-tuningstop-the-world-pauses
Answer and explanation
Correct answer
A. By prioritizing regions with the most garbage
Why
G1GC prioritizes collecting regions that contain the most reclaimable memory (garbage). This approach helps in reducing overall heap usage more effectively by focusing on regions where space can be reclaimed most efficiently.
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