IBM SDK For Java: Diagnostics Guide Java Jdk1.5

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Contents
Figures
Tables
About the Diagnostics Guide
- What does the "Java Virtual Machine (JVM)" mean?
- Who should read this book
- Using this book
- Other sources of information
- Reporting problems
- Conventions and terminology
- How to send your comments
- Contributors
- Summary of changes
Part 1. Understanding the IBM Software Developers Kit (SDK) for Java
Chapter 1. The building blocks of the IBM Virtual Machine for Java
- Java application stack
- Components of the IBM Virtual Machine for Java
Chapter 2. Memory management
- Overview of memory management
- Allocation
- Detailed description of garbage collection
- Generational Concurrent Garbage Collector
  - Tenure age
  - Tilt ratio
- How to do heap sizing
- Interaction of the Garbage Collector with applications
- How to coexist with the Garbage Collector
- Frequently asked questions about the Garbage Collector
Chapter 3. Class loading
- The parent-delegation model
- Namespaces and the runtime package
- Custom class loaders
Chapter 4. Class data sharing
Chapter 5. The JIT compiler
- JIT compiler overview
- How the JIT compiler optimizes code
- Frequently asked questions about the JIT compliler
Chapter 6. Java Remote Method Invocation
- The RMI implementation
- Thread pooling for RMI connection handlers
- Understanding distributed garbage collection
- Debugging applications involving RMI
Chapter 7. The ORB
- CORBA
- RMI and RMI-IIOP
- Java IDL or RMI-IIOP?
- RMI-IIOP limitations
- Further reading
- Examples of client–server applications
- Using the ORB
- How the ORB works
  - The client side
  - The server side
- Additional features of the ORB
Chapter 8. The Java Native Interface (JNI)
- Overview of JNI
- The JNI and the Garbage Collector
  - Overview of JNI object references
  - JNI transitions
- Copying and pinning
- Handling exceptions
- Synchronization
- Debugging the JNI
- JNI checklist
Part 2. Submitting problem reports
Part 3. Problem determination
Chapter 9. First steps in problem determination
Chapter 10. AIX problem determination
- Setting up and checking your AIX environment
  - Enabling full AIX core files
- General debugging techniques
  - AIX debugging commands
  - DBX Plug-in
- Diagnosing crashes
  - Documents to gather
  - Locating the point of failure
- Debugging hangs
- Understanding memory usage
- Debugging performance problems
- MustGather information for AIX
Chapter 11. Linux problem determination
- Setting up and checking your Linux environment
- General debugging techniques
- Diagnosing crashes
- Debugging hangs
- Debugging memory leaks
- Debugging performance problems
- MustGather information for Linux
- Known limitations on Linux
Chapter 12. Windows problem determination
- Setting up and checking your Windows environment
  - Windows 32-bit large address aware support
- General debugging techniques
  - System dump
- Diagnosing crashes in Windows
  - Data to send to IBM
- Debugging hangs
  - Getting a dump from a hung JVM
  - Analyzing deadlocks
- Debugging memory leaks
- OutOfMemoryError creating a thread
- Debugging performance problems
- MustGather information for Windows
Chapter 13. z/OS problem determination
- Setting up and checking your z/OS environment
- General debugging techniques
- Diagnosing crashes
- Debugging hangs
- Understanding Memory Usage
- Debugging performance problems
- MustGather information for z/OS
Chapter 14. IBM i problem determination
- Determining which VM is in use
- Setting up your IBM Technology for Java Environment
- General debugging techniques
- Diagnosing problems at the command line
- IBM i debugging commands
- Debugging performance problems
- Diagnosing crashes
- Diagnosing hangs
  - i5/OS deadlocks
  - i5/OS busy hangs
- Understanding memory usage
- Using dbx
Chapter 15. Sun Solaris problem determination
Chapter 16. Hewlett-Packard SDK problem determination
Chapter 17. ORB problem determination
- Identifying an ORB problem
- Debug properties
- ORB exceptions
- Completion status and minor codes
- Java security permissions for the ORB
- Interpreting the stack trace
  - Description string
- Interpreting ORB traces
- Common problems
- IBM ORB service: collecting data
  - Preliminary tests
Chapter 18. NLS problem determination
- Overview of fonts
- Font utilities
- Common NLS problem and possible causes
Chapter 19. Attach API problem determination
Part 4. Using diagnostic tools
Chapter 20. Overview of the available diagnostics
- Categorizing the problem
- Summary of diagnostic information
- Summary of cross-platform tooling
Chapter 21. Using dump agents
- Using the -Xdump option
  - Merging -Xdump agents
- Dump agents
- Dump events
- Advanced control of dump agents
- Dump agent tokens
- Default dump agents
- Removing dump agents
- Dump agent environment variables
- Signal mappings
- Windows, Linux, AIX, and i5/OS specifics
- z/OS specifics
Chapter 22. Using Javadump
- Enabling a Javadump
- Triggering a Javadump
- Interpreting a Javadump
- Environment variables and Javadump
Chapter 23. Using Heapdump
- Information for users of previous releases of Heapdump
- Getting Heapdumps
  - Enabling text formatted ("classic") Heapdumps
- Available tools for processing Heapdumps
- Using -Xverbose:gc to obtain heap information
- Environment variables and Heapdump
- Text (classic) Heapdump file format
Chapter 24. Using system dumps and the dump viewer
- Overview of system dumps
- System dump defaults
- Overview of the dump viewer
  - Using the dump extractor, jextract
  - Using the dump viewer, jdmpview
- Dump viewer commands
- Example session
Chapter 25. Tracing Java applications and the JVM
- What can be traced?
- Types of tracepoint
- Default tracing
- Where does the data go?
- Controlling the trace
- Using the trace formatter
- Determining the tracepoint ID of a tracepoint
- Application trace
  - Implementing application trace
  - Using application trace at run time
- Using method trace
Chapter 26. JIT problem determination
- Diagnosing a JIT problem
- Performance of short-running applications
- JVM behavior during idle periods
Chapter 27. The Diagnostics Collector
- Introduction to the Diagnostics Collector
- Using the Diagnostics Collector
- Collecting diagnostics from Java runtime problems
- Verifying your Java diagnostics configuration
- Configuring the Diagnostics Collector
  - Diagnostics Collector settings
- Known limitations
Chapter 28. Garbage Collector diagnostics
- How do the garbage collectors work?
- Common causes of perceived leaks
- -verbose:gc logging
- -Xtgc tracing
- Finding which methods allocated large objects
Chapter 29. Class-loader diagnostics
- Class-loader command-line options
- Class-loader runtime diagnostics
- Loading from native code
Chapter 30. Shared classes diagnostics
- Deploying shared classes
- Dealing with runtime bytecode modification
- Understanding dynamic updates
- Using the Java Helper API
  - SharedClassHelper API
- Understanding shared classes diagnostics output
- Debugging problems with shared classes
- Class sharing with OSGi ClassLoading framework
Chapter 31. Using the Reliability, Availability, and Serviceability Interface
- Preparing to use JVMRI
- JVMRI functions
- API calls provided by JVMRI
- RasInfo structure
- RasInfo request types
- Intercepting trace data
  - The -Xtrace:external=<option>
  - Calling external trace
- Formatting
Chapter 32. Using the HPROF Profiler
- Explanation of the HPROF output file
Chapter 33. Using the JVMTI
Chapter 34. Using the Diagnostic Tool Framework for Java
- Using the DTFJ interface
- DTFJ example application
Chapter 35. Using JConsole
Chapter 36. Using the IBM Monitoring and Diagnostic Tools for Java - Health Center
Part 5. Appendixes
Appendix A. CORBA minor codes
Appendix B. Environment variables
- Displaying the current environment
- Setting an environment variable
- Separating values in a list
- JVM environment settings
- z/OS environment variables
Appendix C. Messages
- DUMP messages
- J9VM messages
- SHRC messages
Appendix D. Command-line options
- Specifying command-line options
- General command-line options
- System property command-line options
- JVM command-line options
  - -XX command-line options
- JIT command-line options
- Garbage Collector command-line options
Appendix E. Default settings for the JVM
Notices
- Trademarks
Index
- Special characters
- Numerics
- A
- B
- C
- D
- E
- F
- G
- H
- I
- J
- K
- L
- M
- N
- O
- P
- R
- S
- T
- U
- V
- W
- X
- Z

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