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GCPerfP99V2.java - Percentile Performance with Load
This section provides a GC test program, GCPerfP99V2.java, that uses percentile performance measurements with extra work loads.
2022-10-01, ∼320🔥, 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, ∼320🔥, 0💬

Performance Jumps Not Related to GC
This section provides a tutorial showing that Performance jumps are not related garbage collections.
2022-10-01, ∼320🔥, 0💬

Archived: 640/400/40MB Test on JRockit 28.2
This section provides a tutorial example on running GCTest2.java on JRockit 28.2.7 with 640MB memory limit and a 400MB base plus 40MB fluctuating memory usage with object size of 1.25MB.
2022-10-01, ∼320🔥, 0💬

Log Message Types from Serial Collector
This section describes 4 types of log messages generated from the Serial Collector with the '-XX:+PrintGCDetails'.
2022-10-01, ∼319🔥, 0💬

GCPerfP99.java - 99th Percentile Performance
This section provides a GC test program, GCPerfP99.java, that uses 99th percentile performance measurements.
2022-10-01, ∼319🔥, 0💬

Serial GC Tracing - Aged Live Objects
This section provides a tutorial of tracing how Serial GC increases the age of objects survived each additional GC in 'from' space.
2022-10-01, ∼318🔥, 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, ∼315🔥, 0💬

Collector Combinations: Serial, Parallel, Concurrent, G1
This section describes different garbage collector combinations supported by Java 8 HotSpot: Serial, Parallel, Concurrent, and G1.
2022-10-01, ∼313🔥, 0💬

Archived: 640/400/40MB Test on HotSpot Client 1.7
This section provides a tutorial example on running GCTest2.java on HotSpot Client JVM 1.7.0_45 with 640MB memory limit and a 400MB base plus 40MB fluctuating memory usage with object size of 1.25MB.
2022-10-01, ∼313🔥, 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, ∼312🔥, 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, ∼312🔥, 0💬

Usage Report on Heap Memory Areas
This section provides explanations of the usage report on heap memory areas generated by the '-XX:+PrintGCDetails' option.
2022-10-01, ∼311🔥, 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, ∼311🔥, 0💬

Archived: 1076/800/80MB Test on JRockit 28.2
This section provides a tutorial example on running GCTest2.java on JRockit 28.2.7 with 1078MB memory limit and a 800MB base plus 80MB fluctuating memory usage with object size of 1.25MB.
2022-10-01, ∼311🔥, 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, ∼310🔥, 0💬

Archived: 1076/800/80MB Test on HotSpot Client 1.7
This section provides a tutorial example on running GCTest2.java on HotSpot Client JVM 1.7.0_45 with 1076MB memory limit and a 800MB base plus 80MB fluctuating memory usage with object size of 1.25MB. It crashed almost immediately.
2022-10-01, ∼308🔥, 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, ∼304🔥, 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, ∼304🔥, 0💬

ClassChecker.java - Reports Class Loader
This section provides a tutorial example, ClassChecker.java, which reports the class loader by the JVM to load a given class.
2022-10-01, ∼303🔥, 0💬

JVM Memory Manager - Garbage Collector
This section describes what is a garbage collector and its role and responsibilities for managing the JVM memory.
2022-10-01, ∼303🔥, 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, ∼302🔥, 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, ∼302🔥, 0💬

Tenured Generation Collectors - Serial, ParOldGen, CMS, G1
This section describes Garbage Collectors used for the Tenured generation: Serial, Parallel Old (ParOldGen), Concurrent Mark Sweep (CMS), and Garbage First (G1).
2022-10-01, ∼300🔥, 0💬

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