Java 8 GC Tutorials - Herong's Tutorial Examples - v1.03, by Dr. Herong Yang
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
Takeaways:
Table of Contents
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