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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, ∼244🔥, 0💬

Log Message Types from Serial Collector
This section describes various types of log messages generated from the Serial Collector with the '-Xlog:gc*=debug' option.
2022-10-01, ∼243🔥, 0💬

"-XX:+PrintGCApplicationConcurrentTime" - Application Running Durations
This section describes the garbage collection logging option, '-XX:+PrintGCApplicationConcur rentTime',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, ∼243🔥, 0💬

Serial GC Tracing - Tight Heap
This section provides a tutorial on tracing how Serial GC works with a tight heap size.
2022-10-01, ∼243🔥, 0💬

Performance Tests on G1 collector
This chapter provides tutorial notes and example codes on performance impact of G1 collector, Topics include heap footprint; heap size impact; running minor GC only, running more major GC.
2022-10-01, ∼243🔥, 0💬

GC Log Message Examples of Serial Collector
This section provides an example of GC log messages generated from the Serial Collector.
2022-10-01, ∼242🔥, 0💬

Serial GC Tracing - Plenty of Heap
This section provides a tutorial of tracing how Serial GC works with a huge heap size, plenty of memory in 'new' generation.
2022-10-01, ∼239🔥, 0💬

GCPerformance.java - GC Performance Test Program
This section describes a GC performance test program - GCPerformance.java.
2022-10-01, ∼239🔥, 0💬

Memory Allocation Limits on Windows Systems
This section provides a tutorial example on how JVM expands the Heap space to allocate more objects and leads to the 'java.lang.OutOfMemoryError: Java heap space' Java exception, if it is not allowed to expand any more.
2022-10-01, ∼238🔥, 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, ∼237🔥, 0💬

GCPerfP99V2.java - Object Number and Size
This section provides tutorials to find the work load level for the GCPerfP99V2.java program to the impact of execution environment interruptions to a very level. Work load of 1000 gives me a coefficient variation of 1.22% on my computer used in 2019.
2022-10-01, ∼237🔥, 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, ∼237🔥, 0💬

GCPerfP99.java - 99th Percentile Performance
This section provides a GC test program, GCPerfP99.java, that uses 99th percentile performance measurements.
2022-10-01, ∼237🔥, 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 minor GC only, running more major GC.
2022-10-01, ∼237🔥, 0💬

Running Java Programs on JRockit R28.2.7
This section provides a tutorial example on how to compile and run Java programs using JRockit JVM R28.2.7 on Windows systems.
2022-10-01, ∼236🔥, 0💬

GCPerfP99.java - 99th Percentile Performance
This section provides a GC test program, GCPerfP99.java, that uses 99th percentile performance measurements.
2022-10-01, ∼236🔥, 0💬

Archived: 640/400/40MB Test on HotSpot Client 1.6
This section provides a tutorial example on running GCTest2.java on HotSpot Client JVM 1.6.0_45 with 640MB memory limit and a 400MB base plus 40MB fluctuating memory usage with object size of 1.25MB.
2022-10-01, ∼236🔥, 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, ∼235🔥, 0💬

Benchmark Affected by Other Running Applications
This section provides a tutorial example showing how the benchmark test result is affected by other running applications on the operating system.
2022-10-01, ∼234🔥, 0💬

References
List of reference materials used in this book.
2022-10-01, ∼234🔥, 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, ∼233🔥, 0💬

Adaptive Size Policy Changed Survivor Space
This section provides a tutorial on how Adaptive Size Policy used by the Parallel collector changed the survivor space in the Young generation.
2022-10-01, ∼232🔥, 0💬

Performance Jumps Not Related to GC
This section provides a tutorial showing that Performance jumps are not related garbage collections.
2022-10-01, ∼231🔥, 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, ∼230🔥, 0💬

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