HP-UX Programmer's Guide for Java 2
Table Of Contents
- Table of Contents
- 1 Introduction
- 2 HotSpot Technology Tools and Commands
- 3 Configuration for Java™ Support
- 4 Performance and Tuning
- 5 Measuring System Performance
- 6 Using Threads
- 7 Using Signals
- 8 Using Java™ 2 JNI on HP-UX
- 9 Expanding Memory
- Determine your requirements
- Memory layout under HP-UX 11.0 (PA-RISC only)
- Additional memory available under HP-UX 11i (PA-RISC only)
- Allocating physical memory and swap in the Java™ heap
- Useful key command-line options for allocating memory
- Application-dependent considerations using large heap size HP-UX 11i PA-RISC
- Expanding heap size in native applications on PA-RISC HP-UX 11.11 and later releases
- Expanding heap size in native applications on Integrity HP-UX 11.23 and later releases
- Expanding heap size in HP-UX PA-RISC
- Expanding heap size in HP-UX Integrity
- 10 Diagnosing Memory Leaks
- A JDK/JRE 6.0.n and 7.0.n Usage Notes
- Using Java 2 JNI on HP-UX
- Garbage collection
- Asian TrueType fonts and Asian locales
- Date/Time methods defaults
- Profiling
- Compatibility with previous releases
- Java Cryptography Extension (JCE) policy files
- Configuring the Java Runtime Plug-In
- CLASSPATH environment variable
- Java Web Start technology usage
- Upgrading from a previous Java Web Start version
- IPv6 support
- Allocation Site Statistics and Zero Preparation -Xverbosegc
- JDK 6.0.04 flags
- GC log-rotation support
- NUMA collector enhancements
- ThreadDumpPath support
- Garbage-First garbage collector (-XX:+UseG1GC)
- jmap, jinfo, and jstack tools included in JDK 6.0.03
- Additional Java Web Start documentation
- B JDK/JRE 5.0.n Usage Notes
- Using Java 2 JNI on HP-UX
- Garbage collectors: Parallel and Concurrent Mark Sweep
- Allocating physical memory and swap in the Java heap
- Asian TrueType fonts and Asian locales
- Date/Time methods defaults
- Profiling
- Closing a socket (PA-RISC only)
- Compatibility with previous releases
- Java Cryptography Extension (JCE) policy files
- Allocation Site Statistics and Zero Preparation -Xverbosegc
- IPv6 support on Java 5.0
- GC log-rotation support in 5.0
- ThreadDumpPath support in 5.0
- Dynamically loaded libraries in 5.0
- Performance improvement for String.intern()
- Configuring the Java Runtime Plug-In
- CLASSPATH environment variable
- Java Web Start technology usage
- C SDK/RTE 1.4.2.n Usage Notes
- Removing support for unwanted architectures in the JRE
- Support for dynamic thread local storage (TLS)
- Signal Chaining functionality
- Using Java 2 JNI on HP-UX
- HotSpot JVM options
- Garbage collectors: Parallel and Concurrent mark sweep
- Allocating physical memory and swap in the Java heap
- Asian TrueType fonts and Asian locales
- Date/Time methods defaults
- Profiling
- Closing a socket when accept or read is pending (PA-RISC) - new patch information!
- Compatibility with previous releases
- Runtime Plug-In usage and configuration
- GC log-rotation support
- ThreadDumpPath support
- D Additional Resources
- Index
Concurrent Mark-Sweep GC (widely referred to as CMS). G1 runs largely concurrently
with your application, but with short pauses that are more predictable than those
required by CMS. Unlike CMS, G1 also performs heap compaction to reduce
fragmentation. You can enable this experimental version of G1 with the –XX:+UseG1GC
option. More information can be found at: http://www.oracle.com/technetwork/java/
javase/tech/g1-intro-jsp-135488.html.
Please note that although this Oracle site states that
-XX:+UnlockExperimentalVMOptions is needed with -XX:+UseG1GC, that is no
longer the case for 6.0.08 and later. However, the Garbage-First Garbage Collector is
still considered to be experimental for this release.
jmap, jinfo, and jstack tools included in JDK 6.0.03
The jmap, jinfo, and jstack tools are shipped with the JDK, starting with release
6.0.03. For usage information, use:
# <tool> -help
Additional Java Web Start documentation
This section pertains to JDK/JRE 6.0.n only. HP-UX JDK/JRE 7.0 does not support Java
Web Start.
Information on Java Web Start technology, including developer documentation, can
be found in Oracle's documentation at: http://www.oracle.com/technetwork/java/javase/
tech/index-jsp-136112.html. The Oracle Java Deployment Guide for 6.0 at http://
download.oracle.com/javase/6/docs/technotes/guides/deployment/deployment-guide/
contents.html also contains useful information.
jmap, jinfo, and jstack tools included in JDK 6.0.03 81