Herong's Tutorial Notes on JVM

Version 3.00

Dr. Herong Yang

Copyright © 2002 - 2007 by Dr. Herong Yang. All rights reserved.

Table of Contents

About This Book

Installing Java SE 1.6 Update 2

Java HotSpot VM

• Overview
• Running Java HotSpot Client VM
• Running Java HotSpot Server VM
• VM Memory Usages

JRockit JVM 7.0

• Overview
• Running JRockit JVM
• Running JRockit JVM with Management Console

JRockit JVM 8.0

• Installing JRockit JVM 8.0
• Testing with LongWhile.java
• Testing with LongSleep.java

Memory Management

• Overview
• Out of Memory Error
• Garbage Collection

Garbage Collection

• GCTest Program
• GCTest Program Output - Constant Memory Requirement
• GCTest Program Output - Periodical Memory Requirement
• Comparison - Releasing Old vs. New Objects
• Comparison - JDK 1.4.0 vs. JDK 1.3.1
• Comparison - Client vs. Server
• Comparison - JDK 1.6.0 vs. 1.4.0

Stack Overflow Error

• Stack Overflow Testing Programs
• Comparison - JDK 1.6.0 vs. 1.4.0

Maximum Number of Threads

• Thread Testing Programs
• Thread Testing with JDK 1.6.0

Performance of StringBuffer Class

• StringBuffer Test Program
• StringBuffer Testing with JDK 1.6.0

Class Data Sharing

• What Is Class Data Sharing
• Regenerating Shared Archive
• Test 1 - Startup Time Saving with Restoring Shared Archive
• Test 2 - Startup Time Saving with Multiple JVM Processes
• Test 3 - Footprint Saving with Restoring Shared Archive
• Viewing Shared Memory of JVM Processes

References

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