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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, ∼253🔥, 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, ∼253🔥, 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, ∼253🔥, 0💬

Archived: Testing with LongSleep.java
This section provides a tutorial example on how to run LongSleep.java with JRockit 8.0 and compare it with HotSpot.
2022-10-01, ∼252🔥, 0💬

Performance Jumps Not Related to GC
This section provides a tutorial showing that Performance jumps are not related garbage collections.
2022-10-01, ∼252🔥, 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, ∼252🔥, 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, ∼250🔥, 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, ∼249🔥, 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, ∼249🔥, 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, ∼249🔥, 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, ∼246🔥, 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, ∼246🔥, 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, ∼246🔥, 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, ∼246🔥, 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, ∼245🔥, 0💬

Performance Jumps Not Related to GC
This section provides a tutorial showing that Performance jumps are not related garbage collections.
2022-10-01, ∼244🔥, 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, ∼243🔥, 0💬

Archived: 441/400/40MB Test on JRockit 28.2
This section provides a tutorial example on running GCTest2.java on JRockit 28.2.7 with 441MB memory limit and a 400MB base plus 40MB fluctuating memory usage with object size of 1.25MB. 1 extra MB is enough for the GC to work.
2022-10-01, ∼243🔥, 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, ∼242🔥, 0💬

Performance Test and System Interruptions
This section provides a tutorial showing performance measurement impact of operating system interruptions on JVM.
2022-10-01, ∼241🔥, 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, ∼240🔥, 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, ∼239🔥, 0💬

Adaptive Size Policy for Best Throughput
This section provides a tutorial on how Adaptive Size Policy is used by the Parallel collector to our best Throughput goal.
2022-10-01, ∼239🔥, 0💬

Performance Tests on Concurrent collector
This chapter provides tutorial notes and example codes on performance impact of Concurrent collector, Topics include heap footprint; heap size impact; running Young GC only; running more Old GC; impact of parallel threads; impact of concurrent threads.
2022-10-01, ∼236🔥, 0💬

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