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References
List of reference materials used in this book. 2022-10-01, ∼587🔥, 0💬

Heap Memory Area and Size Control
This chapter provides tutorial notes and example codes on heap memory area. Topics include OutOfMemoryError exception; Heap memory area allocation limits; OutOfMemoryError comparison of HotSpot and JRockit. 2022-10-01, ∼585🔥, 0💬

GC Log Message Format for Serial Collector
This section provides explanations on GC log messages generated from the Serial Collector. 2022-10-01, ∼585🔥, 0💬

Archived: GC Test - Releasing Old vs. New Objects
This section provides a tutorial example on testing garbage collection by comparing performances between release old objects and new objects. 2022-10-01, ∼584🔥, 0💬

CDS (Class Data Sharing)
This chapter provides tutorial notes and example codes on CDS (Class Data Sharing). Topics include generating shared archive with HotSpot; saving startup time and footprint using shared archive; viewing shared memory of JVM processes. 2022-10-01, ∼578🔥, 0💬

Garbage Collection Logging Options
This section describes HotSpot JVM options to generate garbage collection log messages. '-XX:+PrintGCDetails' and '-XX:+PrintGCDateStamps' are two most important options. 2025-12-31, ∼567🔥, 1💬

CPU Impact of Multi-Thread Applications
This chapter provides tutorial notes and example codes on CPU impact of multi-thread Java applications. Topics include CPU intensive thread test class, PrimeCalculator.java; CPU-Thread utilization of single-thread and multi-thread processes; maximum total productivity of multi-thread applications; t... 2022-10-01, ∼567🔥, 0💬

Archived: Testing with LongSleep.java
This section provides a tutorial example on how to run LongSleep.java with JRockit 8.0 and compare it with HotSpot. 2022-10-01, ∼567🔥, 0💬

Micro Benchmark Tests on "long" Operations
This chapter provides tutorial notes and example codes on micro benchmark tests on 'long' data type operations. Topics include empty loop, assignment loop, add operation, multiplication operation and division operation. 2022-10-01, ∼566🔥, 0💬

Implementations of JVM Specification
This section provides a list of major implementations of the JVM Specification. 2022-10-01, ∼564🔥, 0💬

What Is Serial Collector
This section describes the Serial Collector, which uses the combination of the Serial Collector of Young generation and the Serial Collector of Tenured generation, so both minor GC and major GC are performed in a single thread serially in a stop-the-world fashion. 2022-10-01, ∼561🔥, 0💬

BenchmarkRunner.java - Benchmark Runner Program
This section provides a tutorial example on how to write a benchmark runner program that takes care of JVM warming up, JIT compilation, measuring time, and other non-test related tasks. 2022-10-01, ∼560🔥, 0💬

Archived: Testing with LongWhile.java
This section provides a tutorial example on how to run LongWhile.java with JRockit 8.0 and compare it with HotSpot. 2022-10-01, ∼560🔥, 0💬

"-XX:+PrintGC" - Watching GC (Garbage Collection) Logs
This section provides a tutorial example on how to use the HotSpot JVM command option, -XX:+PrintGC, to watch GC (Garbage Collection) logs. JVM performs GC with a regular interval during the test run loop and has no impact on the execution time of the test code. 2022-10-01, ∼557🔥, 0💬

"-Xms" and "-Xmx" - Avoiding GC with Large Memory Size
This section provides a tutorial example on how to allocate more memory to JVM to avoid GC to reduce the impact benchmark tests. 2022-10-01, ∼556🔥, 0💬

java.lang.System Class - The Operating System
This chapter provides tutorial notes and example codes on java.lang.System class. Topics include accessing standard input, output, and error streams; getting the current time in milliseconds and nanoseconds; accessing environment variables; managing JVM instance properties. 2022-10-01, ∼555🔥, 0💬

What Is java.lang.Class Class
This section describes what is java.lang.Class class - A built-in class that represent instances of all data types used in a Java application in the JVM. 2022-10-01, ∼554🔥, 0💬

What Is Eclipse OpenJ9
This section provides a quick introduction of Eclipse OpenJ9, which is an independent implementation of a JVM (Java Virtual Machine) developed by the Eclipse Foundation. 2022-10-01, ∼554🔥, 0💬

Object References and Garbage Collection
This chapter provides tutorial notes and example codes on Object References and Garbage Collection. Topics include object reference types; strong reference test program; final reference test program; dead objects with final references in heap; performance impact of final references. 2022-10-01, ∼554🔥, 0💬

"-XX:+PrintGC" - GC Logging Option for Short Messages
This section describes the garbage collection logging option, '-XX:+PrintGC', which prints a shot message after each garbage collection is done. 2022-10-01, ∼553🔥, 0💬

Maximum Logging of All Phases on Old GC
This section demonstrates that the '-Xlog:gc*=trace' option can be used to print out maximum logging messages of all phases on an Old GC performed by the CMS collector. 2022-10-01, ∼548🔥, 0💬

PSYoungGen Collector Using Tenuring Age
This section demonstrates that the PSYoungGen Collector uses Tenuring Age to perform Young generation GC. But it does not maintain the object age distribution list. 2022-10-01, ∼547🔥, 0💬

What Is Serial Collector
This section describes the Serial Collector, which uses the combination of the Serial Collector of Young generation and the Serial Collector of Tenured generation, so both minor GC and major GC are performed in a single thread serially in a stop-the-world fashion. 2022-10-01, ∼545🔥, 0💬

GCPerformance.java - GC Performance Test Program
This section describes a GC performance test program - GCPerformance.java. 2022-10-01, ∼540🔥, 0💬

<< < 1 2 3 4 5 6 7 8 9 10 11 … > >>   ∑:301  Sort:Date

Android ASP Astrology Big5 Bitcoin Blowfish Built-in C# Calendar CD-DVD Cheminformatics Chinese Cryptography DES Email Encoding Ethereum Flash GB2312 General H Herong History HTML Java JavaScript JDBC JSP JVM Linux Molecule Movie Music MySQL Neural Network Perl PHP Physics PKI Publication Python REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO