Young Generation Collection - Minor GC

This section describes basic steps of a Young Generation Collection, also called a Minor GC. The Young Generation is divided into 3 areas: Eden, Survivor Space 'From' and Survivor Space 'To'.

In order to make Minor GC more efficient, the Young Generation in HotSpot is further divided into 3 areas:

There are 6 basic steps involved in a Minor GC:

The picture below illustrates basic steps of a Minor GC in HotSpot JVM:

HotSpot Young Generation Collection - Minor GC
HotSpot Young Generation Collection - Minor GC

Table of Contents

 About This Book

 Heap Memory Area and Size Control

 JVM Garbage Collection Logging

Introduction of Garbage Collectors

 JVM Memory Manager - Garbage Collector

 Generational Garbage Collection in HotSpot

Young Generation Collection - Minor GC

 Young Generation Collectors - Serial, PS, ParNew, G1

 Tenured Generation Collection - Major GC

 Tenured Generation Collectors - Serial, ParOldGen, CMS, G1

 Collector Combinations: Serial, Parallel, Concurrent, G1, Z

 Serial Collector - "+XX:+UseSerialGC"

 Parallel Collector - "+XX:+UseParallelGC"

 Concurrent Mark-Sweep (CMS) Collector - "+XX:+UseConcMarkSweepGC"

 Garbage First (G1) Collector - "+XX:+UseG1GC"

 The Z Garbage Collector (ZGC) - "+XX:+UseZGC"

 Object References and Garbage Collection

 Garbage Collection Performance Test Program

 Performance Tests on Serial Collector

 Performance Tests on Parallel collector

 Performance Tests on Concurrent collector

 Performance Tests on G1 collector

 Garbage Collection Performance Test Summary


 Full Version in PDF/EPUB