The Serviceability Group

The Serviceability group is comprised of people interested in the design, implementation, and maintanence of Serviceability components.

Introduction

Java SE contains several technologies that allow Java programs to be debugged, profiled, monitored and managed. These technologies allow a tool written in the Java programming language to obtain information from the Java Virtual Machine(JVM) in a different process. These technologies typically:

Contain Java code in the J2SE repository
Contain native code in the J2SE repository
Contain native code in the HotSpot repository. This code implements interfaces that are used by the code in the J2SE repository. This typically involves some form of inter-process communication.

In addition, Java SE contains several tools that use these serviceability technologies. The following table shows the technologies that are available and the tools that use them.

Technology	Tools That Use It
JPDA-Java Platform Debugger Architecture including JVM TI	jdb
Bytecode Instrumentation
JMX - Java Management Extension	jconsole
Monitoring and Management	jconsole
Dynamic Attach	jconsole, jdb, jinfo, jmap, jstack
jvmstat Performance Counters	jconsole, jstat
Serviceability Agent	jdb, jinfo, jmap, jstack

Documentation

Serviceability code resides in both the HotSpot repository and the J2SE repository:

Java SE also contains a technology called the Java Management Extension (JMX) which provides APIs for monitoring and managing resources on local and remote Java Virtual Machines. Please see The Java Management Extensions (JMX) API for information about JMX.

Here are some articles about serviceability in Java SE

Bugs

Following are links to open bugs in the various serviceability areas.

Community

Mailing lists
- serviceability-dev

Serviceability bloggers

Last Modified: 07/19/07