JTop monitors the CPU usage of all threads in a remote application

which has remote management enabled. JTop demonstrates the use of

the java.lang.management API to obtain the CPU consumption for

each thread.

JTop is also a JConsole Plugin. See below for details.

JTop Standalone GUI

===================

JTop first establishes a connection to a JMX agent in a remote

application with a JMX service URL:

service:jmx:rmi:///jndi/rmi://<hostName>:<portNum>/jmxrmi

where <hostName> is the hostname and <portNum> is the port number

to which the JMX agent will be connected.

To run the demo

---------------

(1) Start the application with the JMX agent - here's an example of

how the Java2D is started

java -Dcom.sun.management.jmxremote.port=1090

-Dcom.sun.management.jmxremote.ssl=false

-Dcom.sun.management.jmxremote.authenticate=false

-jar <JDK_HOME>/demo/jfc/Java2D/Java2Demo.jar

This instruction uses the Sun's built-in support to enable a JMX agent

with a JMX service URL as described above.

You can programmatically start a JMX agent with the RMI connector

using javax.management.remote API. See the javadoc and examples for

javax.management.remote API for details.

(2) Run JTop on a different machine:

java -jar <JDK_HOME>/demo/management/JTop/JTop.jar <hostname>:1090

where <hostname> is where the Java2Demo.jar runs in step (1).

These instructions assume that this installation's version of the java

command is in your path. If it isn't, then you should either

specify the complete path to the java command or update your

PATH environment variable as described in the installation

instructions for the Java(TM) SDK.

JTop JConsole Plugin

====================

JTop is a JConsole Plugin which adds a "JTop" tab to JConsole.

To run JConsole with the JTop plugin

------------------------------------

jconsole -pluginpath <JDK_HOME>/demo/management/JTop/JTop.jar

To compile

----------

javac -classpath <JDK_HOME>/lib/jconsole.jar JTopPlugin.java

com.sun.tools.jconsole API is in jconsole.jar which is needed

in the classpath for compilation.