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《HotSpot Virtual Machine Garbage Collection Tuning Guide》介绍
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《HotSpot Virtual Machine Garbage Collection Tuning Guide》目录
Parallel Collector
Documentation Accessibility
Diversity and Inclus ian
Related Documents
Conventions
Introduction to Garbage Collection Tuning
What Is a Garbage Collector?
Why Does the Choice of Garbage Collector Matter?
Supported Operating Systems in Documentation
2Ergonomics
Garbage Collector， Heap， and Runt me Compiler Default Select ons
Behavior-Based Tuning
Maximum Pause-Time Goal
Throughput Goal
Footprint
Tuning Strategy
3Garbage Collector Implementation
Generational Garbage Collection
Generations
Performance Considerations
Throughput and Footprint Measurement
Factors Affecting Garbage Collection Performance
Total Heap
Heap Options Affecting Generation Size
ORACLE
Default Option Values for Heap Size
Garbage-First(G 1) Garbage Collector
The Z Garbage Collector
Selecting a Collector
Conserving Dynamic Footprint by Minimizing Java Heap Size
The Young Generation
Young Generation Size Options
Survivor Space Sizing
5Available Collectors
6The Parallel Collector
Number of Parallel Collector Garbage Collector Threads
Arrangement of Generations in Parallel Collectors
Parallel Collector Ergonomics
Introduction to Garbage-First(G 1) Garbage Collector
Enabling G 1
Basic Concepts
Garbage-First In tem nals
Options to Specify Parallel Collector Behaviors
Priority of Parallel Collector Goals
Parallel Collector Generation Size Adjustments
Parallel Collector Default Heap Size
Excessive Parallel Collector Time and OutOfMemoryError
Parallel Collector Measurements
7Garbage-First(G 1) Garbage Collector
ORACLE
Specification of Parallel Collector Inital and Maximum Heap Sizes
Heap Layout
Garbage Collection Cycle
Garbage Collection Pauses and Collect onSet
Java Heap Sizing
Young-Only Phase Generation Sizing
Space-Reclamation Phase Generation Sizing
Periodic Garbage Collections
Determining Initiating Heap Occupancy
Marking
Garbage-First Garbage Collector Tuning
General Recommendations for G 1
Moving to G 1 from Other Collectors
Improving G 1 Performance
Observing Full G