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OutOfMemoryError Comparison of HotSpot and JRockit
This section provides a tutorial example to compare the OutOfMemoryError exception between HotSpot 12, 10, 1.8, 1.7, 1.6 and JRockit 28.2.7.
2022-10-01, ∼374🔥, 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 minor GC only; running more major GC; impact of parallel threads; impact of concurrent threads.
2022-10-01, ∼373🔥, 0💬

GCPerformance.java - Program Output
This section describes output data generated by the GC tuning test program - GCPerformance.java.
2022-10-01, ∼372🔥, 0💬

Thread Test on HotSpot 1.6
This section provides a tutorial example to see how many running threads can be supported on HotSpot 1.6.0_02 Client and Server JVMs.
2022-10-01, ∼371🔥, 0💬

Tenured Generation Collection - Major GC
This section describes basic steps of a Tenured Generation Collection, also called a Major GC, which uses a simple 3-step Mark-Sweep-Compact algorithm on the entire Tenured Generation.
2022-10-01, ∼371🔥, 0💬

Parallel Collector Adaptive Size Policy
This section describes the Adaptive Size Policy supported by the Parallel Collector to dynamically change heap generation sizes to latency, throughput and footprint goals sequentially.
2022-10-01, ∼369🔥, 0💬

Performance Test and System Interruptions
This section provides a tutorial showing performance measurement impact of operating system interruptions on JVM.
2022-10-01, ∼365🔥, 0💬

Best Garbage Collector and Configuration
This section describes the best garbage collector and configuration for our performance test program, GCPrefp99.java.
2022-10-01, ∼364🔥, 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, ∼364🔥, 0💬

Thread Test on HotSpot 1.4 and JRockit 7.0
This section provides a tutorial example to see how many running threads can be supported on HotSpot 1.4.0_02 Client/Server and JRockit 7.0 JVMs.
2022-10-01, ∼360🔥, 0💬

What Is Parallel Collector
This section describes the Parallel Collector, which uses the combination of the Parallel Scavenge (PS) Collector of Young generation and the Parallel Old Collector of Tenured generation, so both minor GC and major GC are performed in multiple threads parallelly in a stop-the-world fashion.
2022-10-01, ∼357🔥, 0💬

OutOfMemoryError Comparison of HotSpot and JRockit
This section provides a tutorial example to compare the OutOfMemoryError exception between HotSpot 1.8, 1.7, 1.6 and JRockit 28.2.7.
2022-10-01, ∼349🔥, 0💬

"-XX:+PrintGCDetails" - Garbage Collection Logging
This section describes HotSpot JVM options to generate garbage collection logging messages. It also describes log message format to help us understand what the JVM is telling us.
2022-10-01, ∼100🔥, 0💬

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