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Archived: Download and Install Java SE 1.6 Update 2
This chapter provides a tutorial example on how to download and install Java SE 1.6 Update 2 (JDK 6u2) on Windows systems.
2022-10-01, ∼427🔥, 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, ∼425🔥, 0💬

What Is Serial Collector
This section describes the Serial Collector, which uses the combination of the Serial Collector of Young generation and the Serial Collector of Tenured generation, so both minor GC and major GC are performed in a single thread serially in a stop-the-world fashion.
2022-10-01, ∼424🔥, 0💬

Adaptive Size Policy for Best Latency
This section provides a tutorial on how Adaptive Size Policy is used by the Parallel collector to our best latency goal.
2022-10-01, ∼421🔥, 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 Young GC only, running more Full GC and Old GC.
2022-10-01, ∼421🔥, 0💬

Parallel Collector GC Log Message Format
This section describes the GC log message format of HotSpot JVM Parallel Collector.
2022-10-01, ∼421🔥, 0💬

CPU Impact of Multi-Thread Applications
This chapter provides tutorial notes and example codes on CPU impact of multi-thread Java applications. Topics include CPU intensive thread test class, PrimeCalculator.java; CPU-Thread utilization of single-thread and multi-thread processes; maximum total productivity of multi-thread applications; t...
2022-10-01, ∼419🔥, 0💬

"-XX:+PrintGCApplicationStoppedTime" - Application Pause Durations
This section describes the garbage collection logging option, '-XX:+PrintGCApplicationStoppe dTime',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, ∼418🔥, 0💬

Log Message Types from Parallel Collector
This section describes various types of log messages generated from the Parallel Collector with the '-Xlog:gc*=debug' option.
2022-10-01, ∼417🔥, 0💬

Micro Benchmark Tests in JIT Compilation Mode
This chapter provides tutorial notes and example codes on micro benchmark tests on 'int' and 'long' data type operations in HotSpot JIT compilation mode. Topics include empty loop, assignment loop, shift operation, add operation, multiplication operation and division operation.
2022-10-01, ∼416🔥, 0💬

Maximum Logging of All Phases on Old GC
This section demonstrates that the '-Xlog:gc*=trace' option can be used to print out maximum logging messages of all phases on an Old GC performed by the CMS collector.
2022-10-01, ∼410🔥, 0💬

Archived: GC Test - Releasing Old vs. New Objects
This section provides a tutorial example on testing garbage collection by comparing performances between release old objects and new objects.
2022-10-01, ∼409🔥, 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, ∼409🔥, 0💬

Micro Benchmark Runner and JVM Options
This chapter provides tutorial notes and example codes on micro benchmark testing. Topics include micro benchmark guidelines; controlling and watching JIT compilation; controlling and watching GC.
2022-10-01, ∼408🔥, 0💬

"--Xlog:gc+task+time=debug" - Print GC Threads
This section describes how to use the '-Xlog:gc+task+time=debug' JVM option to show multiple GC threads used by the Parallel Collector.
2022-10-01, ∼408🔥, 0💬

Serial GC Tracing - Tight Heap (Part 3)
This section provides part 3 of a tutorial on tracing how Serial GC works with a tight heap size.
2022-10-01, ∼408🔥, 0💬

"-XX:+PrintGCTaskTimeStamps" - Print GC Threads
This section describes how to use the '-XX:+PrintGCTaskTimeStamps' JVM option to show multiple GC threads used by the Parallel Collector.
2022-10-01, ∼408🔥, 0💬

JVM Garbage Collection Logging
This chapter provides tutorial notes and example codes on JVM options for garbage collection logging. Topics include a summary of logging options; examples of log messages for '-XX:+PrintGCDetails', '-XX:+PrintGCDateStamps', '-XX:+PrintGCDateStamps', 'PrintGCApplicationStoppedTime ',etc.
2022-10-01, ∼407🔥, 0💬

"-XX:ParallelGCThreads=6" - Old GC Parallel Threads
This section demonstrates that the '-XX:ParallelGCThreads=6' option can be used to control the number of threads used in Old GC parallel phases.
2022-10-01, ∼406🔥, 0💬

Archived: GCTest2.java - Garbage Collection Test Program
This section describes a garbage collection test program - GCTest2.java.
2022-10-01, ∼406🔥, 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, ∼404🔥, 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, ∼402🔥, 0💬

Default NewRatio - Old vs. New Generation
This section describes the default NewRatio which is the ratio of old generation size vs. new generation size.
2022-10-01, ∼402🔥, 0💬

"-XX:+PrintAdaptiveSizePolicy" - Minor GC Report
This section provides examples of log messages generated from '-XX:+PrintAdaptiveSizePolicy' that tells us what happened at each Parallel Minor GC.
2022-10-01, ∼401🔥, 0💬

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