Performance Tests on Parallel collector

This chapter provides tutorial notes and example codes on performance impact of Parallel collector, Topics include heap footprint; heap size impact; running minor GC only, running more major GC.

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Parallel GC Footprint - Free Heap 10%

Heap Size Impact on Parallel GC

Parallel Minor GC Not Removing Dead Objects

Performance of Parallel Minor GC

Performance of Parallel Major GC

"-XX:MaxTenuringThreshold=0" - Bad for Parallel GC

Tiny Survivor Spaces Are Bad for Parallel GC

Thread Count Impact on Parallel GC

AFFINITY=n - CPU Processors and Parallel GC

Best Parallel GC Configuration

Performance Summary of Parallel Collector


Table of Contents

 About This Book

 Heap Memory Area and Size Control

 JVM Garbage Collection Logging

 Introduction of Garbage Collectors

 Serial Collector - "+XX:+UseSerialGC"

 Parallel Collector - "+XX:+UseParallelGC"

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

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

 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

 Outdated Tutorials


 Full Version in PDF/EPUB