Lobster Programming
Jan 2, 2025 · Fundamentals
How Card Tables Optimize Cross‑Generational GCRoot Scanning in Java HotSpot
This article explains how Java HotSpot uses a card‑table memory set to efficiently detect and handle cross‑generational references during young‑generation GCRoot scans, avoiding full old‑generation scans and significantly improving garbage‑collection performance.
Card TableCross-Generational ReferencesGarbage Collection
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