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Archived: GC Test - Constant Memory Requirement
This section provides a tutorial example on testing garbage collection with a constant memory requirement.
2022-10-01, ∼419🔥, 0💬

Concurrent Mark-Sweep Collector GC Log Message Format
This section describes the log message format of HotSpot JVM Concurrent Mark-Sweep (CMS) Collector.
2022-10-01, ∼418🔥, 0💬

Archived: GC Test - Periodical Memory Requirement
This section provides a tutorial example on testing garbage collection with a periodical memory requirement.
2022-10-01, ∼417🔥, 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, ∼416🔥, 0💬

GCPerformance.java - GC Performance Test Program
This section describes a GC performance test program - GCPerformance.java.
2022-10-01, ∼414🔥, 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, ∼414🔥, 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, ∼413🔥, 0💬

Archived: GC Test - Client vs. Server
This section provides a tutorial example on testing garbage collection by comparing performances between HotSpot Server VM and HotSpot Client VM.
2022-10-01, ∼412🔥, 0💬

Young Generation Collectors - Serial, PS, ParNew, G1
This section describes Garbage Collectors used for the Young generation: Serial, Parallel Scavenge (PS), Parallel New (ParNew), and Garbage First (G1).
2022-10-01, ∼411🔥, 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, ∼408🔥, 0💬

Garbage Collection Demo Program
This section provides a tutorial example on watch how the garbage collection process works on HotSpot and other JVMs.
2022-10-01, ∼407🔥, 0💬

References
List of reference materials used in this book.
2022-10-01, ∼403🔥, 0💬

Adaptive Size Policy Log Messages
This section provides examples and explanations of log messages generated '-XX:AdaptiveSizePolicyOutputI nterval=1'and 'PrintAdaptiveSizePolicy' JVM options used with the Parallel collector.
2022-10-01, ∼403🔥, 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, ∼399🔥, 0💬

"-XX:+PrintReferenceGC" - Reference Counts per GC
This section describes the garbage collection logging option, '-XX:+PrintReferenceGC', which prints object reference counts.
2022-10-01, ∼398🔥, 0💬

"-XX:+PrintGCApplicationStoppedTime" - Application Pause Durations
This section describes the garbage collection logging option, '-XX:+PrintGCApplicationStoppe dTime',which prints how much time it lasted when the JVM pauses the execution of the application for garbage collection or other JVM event.
2022-10-01, ∼396🔥, 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, ∼394🔥, 0💬

Implementations of JVM Specification
This section provides a list of major implementations of the JVM Specification.
2022-10-01, ∼393🔥, 0💬

Parallel Collector GC Log Message Format
This section describes the GC log message format of HotSpot JVM Parallel Collector.
2022-10-01, ∼393🔥, 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, ∼392🔥, 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, ∼389🔥, 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, ∼389🔥, 0💬

Archived: GCTest.java - Garbage Collection Test Program
This section describes a garbage collection test program - GCTest.java.
2022-10-01, ∼387🔥, 0💬

Adaptive Size Policy for Best Latency
This section provides a tutorial on how Adaptive Size Policy is used by the Parallel collector to our best latency goal.
2022-10-01, ∼387🔥, 0💬

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