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Charlie Hunt, Monica Beckwith, Poonam Parhar, Bengt Rutisson - Java Performance Companion [2016, PDF, ENG]

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Post 01-May-2016 15:33

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Java Performance Companion
Год издания: 2016
Автор: Charlie Hunt, Monica Beckwith, Poonam Parhar, Bengt Rutisson
Жанр или тематика: Программирование
Издательство: Addison-Wesley Professional
ISBN: 978-0133796827
Язык: Английский
Формат: PDF
Качество: Издательский макет или текст (eBook)
Интерактивное оглавление: Да
Количество страниц: 192
Описание: Java® Performance Companion shows how to systematically and proactively improve Java performance with today’s advanced multicore hardware and complex operating system environments.
The authors, who are all leading Java performance and Java HotSpot VM experts, help you improve performance by using modern software engineering practices, avoiding common mistakes, and applying tips and tricks gleaned from years of real-world experience.
Picking up where Charlie Hunt and Binu John’s classic Java Performance left off, this book provides unprecedented detail on two powerful Java platform innovations: the Garbage First (G1) garbage collector and the HotSpot VM Serviceability Agent.
Coverage includes
- Leveraging G1 to overcome limitations in parallel, serial, and CMS garbage collection
- Understanding each stage of G1 GC collections, both young and old
- Getting under the hood with G1 and efficiently fine-tuning it for your application
- Identifying potential optimizations, interpreting experimental results, and taking action
- Exploring the internals of the HotSpot VM
- Using HotSpot VM Serviceability Agent to analyze, triage, and resolve diverse HotSpot VM issues
- Troubleshooting out of memory errors, Java level deadlocks, and HotSpot VM crashes
- Extending the Serviceability Agent, and using the Plugin for VisualVM
- Mastering useful HotSpot VM command line options not covered in Java™ Performance
Java® Performance Companion can help you squeeze maximum performance and value from Java with JDK 8 or 9–for any application, in any environment.

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Contents
Preface ix
Acknowledgments xi
About the Authors xv
Chapter 1 Garbage First Overview 1
Terminology 1
Parallel GC 2
Serial GC 4
Concurrent Mark Sweep (CMS) GC 5
Summary of the Collectors 7
Garbage First (G1) GC 8
G1 Design 10
Humongous Objects 12
Full Garbage Collections 12
Concurrent Cycle 13
Heap Sizing 14
References 14
Chapter 2 Garbage First Garbage Collector in Depth 15
Background 15
Garbage Collection in G1 16
The Young Generation 17
A Young Collection Pause 18
Object Aging and the Old Generation 19
Humongous Regions 19
A Mixed Collection Pause 22
Collection Sets and Their Importance 24
Remembered Sets and Their Importance 24
Concurrent Refinement Threads and Barriers 28
Concurrent Marking in G1 GC 30
Stages of Concurrent Marking 34
Initial Mark 34
Root Region Scanning 34
Concurrent Marking 34
Remark 36
Cleanup 36
Evacuation Failures and Full Collection 37
References 38
Chapter 3 Garbage First Garbage Collector Performance Tuning 39
The Stages of a Young Collection 39
Start of All Parallel Activities 41
External Root Regions 42
Remembered Sets and Processed Buffers 42
Summarizing Remembered Sets 44
Evacuation and Reclamation 47
Termination 47
Parallel Activity Outside of GC 48
Summarizing All Parallel Activities 48
Start of All Serial Activities 48
Other Serial Activities 49
Young Generation Tunables 50
Concurrent Marking Phase Tunables 52
A Refresher on the Mixed Garbage Collection Phase 54
The Taming of a Mixed Garbage Collection Phase 56
Avoiding Evacuation Failures 59
Reference Processing 60
Observing Reference Processing 60
Reference Processing Tuning 62
References 65
Chapter 4 The Serviceability Agent 67
What Is the Serviceability Agent? 68
Why Do We Need the SA? 68
SA Components 69
SA Binaries in the JDK 69
JDK Versions with Complete SA Binaries 69
How the SA Understands HotSpot VM Data Structures 70
SA Version Matching 71
The Serviceability Agent Debugging Tools 72
HSDB 72
HSDB Tools 80
CLHSDB 100
Some Other Tools 103
Core Dump or Crash Dump Files 108
Debugging Transported Core Files 109
Shared Library Problems with the SA 109
Eliminate Shared Library Problems 110
System Properties for the Serviceability Agent 111
Environment Variables for the Serviceability Agent 112
JDI Implementation 113
Extending Serviceability Agent Tools 115
Serviceability Agent Plugin for VisualVM 117
How to Install the SA-Plugin in VisualVM 118
How to Use the SA-Plugin 118
SA-Plugin Utilities 119
Troubleshooting Problems Using the SA 123
Diagnosing OutOfMemoryError 123
Diagnosing a Java-Level Deadlock 131
Postmortem Analysis of a HotSpot VM Crash 136
Appendix Additional HotSpot VM Command-Line Options of Interest 145
Index 155
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