Introduction to JVM Performance

Java Memory Management and Garbage Collectors (GCs)

Automatic memory management utilizing the garbage collection subsystem is an important aspect of the Java Virtual Machine (JVM). The performance of Java applications significantly depends on the garbage collection technology and the configuration of garbage collectors in use. This section discusses automatic memory management, and the various garbage collectors that are available in different JDK versions.

Memory Management

• Introduction to Java Memory Pools
• Understanding the Java Heap versus the Native (C) Heap

Garbage Collector Overviews

• What Is a Garbage Collector?
• Understanding Garbage Collectors
• Understanding the JDK’s New Superfast Garbage Collectors
• Java garbage collection: The 10-release evolution from JDK 8 to JDK 18

Collector-Specific Introductions

• Garbage-First (G1) Garbage Collector
• Z Garbage Collector (ZGC)
• Parallel Garbage Collector
• Serial Garbage Collector
• Concurrent Mark Sweep