Friday, March 13, 2009

How to remote debug JMeter?

Want to remote Debug JMeter? Here I show you how I did it?
  1. Download JMeter binary package and source package, unzip them into the same directory.
  2. Rename the eclipse.classpath file to .classpath and open the project with IDEA.
  3. Open a shell, set JVM_ARGS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=5005
  4. Start JMeter in the previous shell.
  5. Setup remote debug in IDEA and start debug.

Setup JMeter JMS Publisher Sampler

Even though there are documentations on how to setup and use JMeter JMS publisher sampler, it seems all of them are either inaccurate or out of date. After pulling my hair for almost two hours, I finally made it work. To avoid headache for anybody who want to set up JMeter JMS publisher sampler, I recorded the procedure as following.

We choose ActiveMQ as our JMS provider.
  1. Copy activemq-core-5.2.0.jar, jms-1.1.jar, and geronimo-j2ee-management_1.0_spec-1.0.jar into JMeter's lib directory.
  2. Create a file and jar it into a jar file, put the jar file into JMeter's lib directory.
  3. Confiture the JMS publisher sampler with the following settings in the JMeter GUI.
  • Check use
  • Connection Factory: ConnectionFactory
  • Topic: MyTopic
  • Number of messages to aggregate: 1
Here is the content of the file:

There are a few catches during the setting up process:
* The ActiveMQInitialContextFactory package name must have the apache.
* ConnectionFactory can not contain any trailing space.
* The Topic JNDI name must be prefixed with topic in the jndi file.
* You must put in the Number Of messages to aggregate, otherwise there will be no messages published.