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.+
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+
−
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+
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application with a JMX service URL:+
−
   service:jmx:rmi:///jndi/rmi://<hostName>:<portNum>/jmxrmi+
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+
−
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+
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           -Dcom.sun.management.jmxremote.authenticate=false+
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           -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.+
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+
−
(2) Run JTop on a different machine:+
−
+
−
      java -jar <JDK_HOME>/demo/management/JTop/JTop.jar <hostname>:1090+
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+
−
    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+
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+
−
+
−
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.+
−