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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, ∼294🔥, 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, ∼294🔥, 0💬

Performance Jumps Not Related to GC
This section provides a tutorial showing that Performance jumps are not related garbage collections.
2022-10-01, ∼294🔥, 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, ∼294🔥, 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, ∼292🔥, 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, ∼292🔥, 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, ∼292🔥, 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, ∼291🔥, 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, ∼290🔥, 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, ∼289🔥, 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, ∼288🔥, 0💬

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, ∼286🔥, 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, ∼286🔥, 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, ∼282🔥, 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, ∼281🔥, 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, ∼280🔥, 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, ∼280🔥, 0💬

What Is JRockit Mission Control?
This section describes JRockit Mission Control, which is a set of JVM monitoring and management tools including Management Console, Runtime Analyzer and Memory Leak Detector.
2022-10-01, ∼279🔥, 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, ∼279🔥, 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, ∼278🔥, 0💬

Adaptive Size Policy Changed Eden Space
This section provides a tutorial on how Adaptive Size Policy used by the Parallel collector changed the eden space in the Young generation to meet the throughput goal.
2022-10-01, ∼277🔥, 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, ∼277🔥, 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, ∼274🔥, 0💬

GCPerfP99.java - Output Verification
This section provides tutorials to verify output from GCPerfP99.java test runs. System interrupts are successfully excluded from performance calculation.
2022-10-01, ∼273🔥, 0💬

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