The Serviceability Group

The Serviceabilitygroup is comprised ofpeople interested in the design, implementation, and maintanence ofServiceability components.

Introduction

Java SE contains several technologies that allow Java programsto be debugged, profiled, monitored and managed. These technologiesallow a tool written in the Java programming language to obtaininformation from the Java Virtual Machine(JVM) in a differentprocess. 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 codeimplements interfaces that are used by the code in the J2SErepository. This typically involves some form of inter-processcommunication.

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

Technology	Tools That Use It
JPDA-Java Platform DebuggerArchitecture 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 theJ2SE repository:

• HotSpotServiceability
• J2SE Serviceability

Java SE also contains a technology called the Java ManagementExtension (JMX) which provides APIs for monitoring and managingresources on local and remote Java Virtual Machines. Please seeThe Java Management Extensions (JMX) APIfor information about JMX.

Community

• Mailing lists
  • serviceability-dev

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