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Serial GC Tracing - Tenuring Threshold
This section provides a tutorial showing how Serial GC changes the tenuring threshold dynamically and promotes objects to 'tenured' generation earlier or later to Tenuring generation to meet the TargetSurvivorRatio setting.
2022-10-01, ∼340🔥, 0💬

JRockit JVM 28.2.7 by Oracle Corporation
This chapter provides tutorial notes and example codes on JRockit JVM. Topics include downloading and installing JRockit R28.2.7; running Java programs on JRockit JVM; memory footprint of JRockit JVM; JRockit Mission Control tools; JRockit Management Console for JRockit and HotSpot JVMs.
2022-10-01, ∼339🔥, 0💬

Parallel Collector Changing NewRatio and SurvivorRatio
This section demonstrates that the Parallel Collector changes the NewRatio and the SurvivorRatio dynamically, even they are specified in command line.
2022-10-01, ∼339🔥, 0💬

Young Generation Collection - Minor GC
This section describes basic steps of a Young Generation Collection, also called a Minor GC. The Young Generation is divided into 3 areas: Eden, Survivor Space 'From' and Survivor Space 'To'.
2022-10-01, ∼339🔥, 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, ∼339🔥, 0💬

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 Young GC only, running more Old GC.
2022-10-01, ∼338🔥, 0💬

Serial GC Tracing - Tight Heap (Part 2)
This section provides part 2 of a tutorial on tracing how Serial GC works with a tight heap size.
2022-10-01, ∼338🔥, 0💬

Garbage Collection Performance Test Summary
This chapter provides discussions on GC performance test result. Topics include comparison of performances of different garbage collectors; suggestions to use garbage collectors more efficiently.
2022-10-01, ∼338🔥, 0💬

Micro Benchmark Tests on "int" Operations
This chapter provides tutorial notes and example codes on micro benchmark tests on 'int' data type operations. Topics include empty loop, assignment loop, shift operation, add operation, multiplication operation and division operation.
2022-10-01, ∼337🔥, 0💬

Parallel Collector Stops Application for Minor/Major GC
This section provides log messages showing that the Parallel Collector stops the application for both Minor GC and Major GC.
2022-10-01, ∼337🔥, 0💬

General Suggestions for Better GC Performance
This section describes some general rules used by JVM to manage memory and get better GC performance.
2022-10-01, ∼335🔥, 0💬

OpenJ9 by Eclipse Foundation
This chapter provides tutorial notes and example codes on OpenJ9 JVM. Topics include downloading and installing OpenJ9; running Java programs on OpenJ9 JVM; memory footprint of OpenJ9 JVM; comparison of startup time and footprint between OpenJ9 and HotSpot.
2022-10-01, ∼333🔥, 0💬

Parallel Collector Stopped using Young Generation
This section provides a tutorial on how Adaptive Size Policy is used by the Parallel collector to our best latency goal.
2022-10-01, ∼333🔥, 0💬

Introduction of Garbage Collectors
This chapter provides tutorial notes and example codes on garbage collectors. Topics include JVM memory management summary; Introduction of Generational Garbage Collector; Young and Tenured Heap regions; Eden and Survivor spaces; Mark-Sweep-Compact algorithm; Garbage collector variations.
2022-10-01, ∼332🔥, 0💬

"START /REALTIME" - Run JVM with Highest Priority
This section provides a tutorial showing how to use 'START /REALTIME' command to run JVM with highest priority on Windows systems.
2022-10-01, ∼331🔥, 0💬

CrashThread2.java - Thread Testing Program
This section describes a thread testing programs, CrashThread2.java, that keep adding new thread in a while loop.
2022-10-01, ∼329🔥, 0💬

Performance Tests on Serial Collector
This chapter provides tutorial notes and example codes on performance impact of Serial collector, Topics include heap footprint; GC logging impact; wait time impact; heap size impact; running Young GC only, running more Old GC.
2022-10-01, ∼329🔥, 0💬

Serial Collector Stops Application for Minor/Major GC
This section provides log messages showing that the Serial Collector stops the application for both Minor GC and Major GC.
2022-10-01, ∼329🔥, 0💬

Performance Test and System Interruptions
This section provides a tutorial showing performance measurement impact of operating system interruptions on JVM.
2022-10-01, ∼327🔥, 0💬

Performance Impact of Object Size
This section provides tests to find out performance impact of the object size. Java manages larger objects more efficiently for the same total amount of data.
2022-10-01, ∼326🔥, 0💬

GCPerformance.java - GC Performance Test Program
This section describes a GC performance test program - GCPerformance.java.
2022-10-01, ∼325🔥, 0💬

Performance Jumps Not Related to GC
This section provides a tutorial showing that Performance jumps are not related garbage collections.
2022-10-01, ∼324🔥, 0💬

References
List of reference materials used in this book.
2022-10-01, ∼324🔥, 0💬

Minor GC Triggering Condition of Serial Collector
This section describes the triggering condition of the Serial collector Minor GC process. The condition is the failure of new object allocation in 'eden'.
2022-10-01, ∼322🔥, 0💬

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