jMeter JMS | jMeter - JMS Test Plan - jmeter - jmeter tutorial




What is jMeter JMS?

  • General notes on JMS: There are currently two JMS samplers. One uses JMS topics and the other uses queues. Topic messages are commonly known as pub/sub messaging.
  • Topic messaging is generally used in cases where a message is published by a producer and consumed by multiple subscribers.
  • Queue messaging is generally used for transactions where the sender expects a response. Messaging systems are quite different from normal HTTP requests.
  • In HTTP, a single user sends a request and gets a response. Messaging system can work in synchronous and asynchronous mode.
  • learn apache jmeter tutorials - jms

    learn apache jmeter tutorials - java messaging services Example

  • In this chapter, we will learn how to write a simple test plan to test Java Messaging Service (JMS). JMS supports two types of messaging

Point-to-Point messaging

  • Queue messaging is generally used for transactions where the sender expects a response.
  • Messaging systems are quite different from normal HTTP requests. In HTTP, a single user sends a request and gets a response.

Topic messaging

  • Topic messages are commonly known as pub/sub messaging. Topic messaging is generally used in cases where a message is published by a producer and consumed by multiple subscribers.
  • Let us see a test example for each of these. The pre-requisites for testing JMS are

    • We use Apache ActiveMQ in the example. There are various JMS servers like IBM WebSphere MQ (formerly MQSeries), Tibco, etc. Download it from the binaries from the Apache ActiveMQ website.
    • Unzip the archive, go to the decompressed directory, and run the following command from the command console to start the ActiveMQ server −
    • .\bin\activemq start
  • You can verify if the ActiveMQ server has started by visiting the admin interface at the following address http://localhost:8161/admin/.
  • If it asks for authentication, then enter the userid and password as admin. The screen is similar as shown below
 message topics in jms test plan
  • Now copy the activemq-all-x.x.x.jar (XXX depending on the version) from the ActiveMQ unzipped directory to /home/manisha/apache-jmeter-2.9/lib.
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Building a JMS Point-to-Point Test Plan

  • Now let us write a JMeter test plan to test a JMS Point-to-Point messaging solution. The setup of the test is one thread group with one thread or user sending 2 messages each through a request queue.
  • Let us start the JMeter from /home/manisha/apache-jmeter2.9/bin/jmeter.sh.

Add Users

  • Create a Thread group.
  • Right-click the Test Plan node.
  • Select Add > Threads (Users) > Thread Group. Thread Group gets added under the Test Plan node.
  • Rename this Thread Group as JMSTestPlan-PointtoPoint.
 threadgroup in jms
  • We will change the Loop Count to two. Rest of the default properties of the Thread Group are retained.
  • It means one thread group with one thread or one user sends two messages each through a request queue.

Add JMS Point-to-Point Sampler

  • Now that we have defined the users, it is time to define the tasks that they will be performing. Start by adding the sampler JMS Point-to-Point to the Point-to-Point element.
    • Select Add > Sampler > JMS Point-to-Point.
    • Select the JMS Point-to-Point sampler element in the tree.
  • The following property changes are made to the JMS Point-to-Point sampler element

 add point in jms

Building a JMS Topic Test Plan

  • Now let us write a JMeter test plan to test a JMS Provider. We will create one subscriber and one publisher. We will create one thread group and set each one to two iterations
  • First let us start the JMeter from /home/manisha/apache-jmeter2.9/bin/jmeter.sh.

Add Users

  • Now create a Thread group as follows

    • Right-click the Test Plan
    • Select Add > Threads (Users) > Thread Group. Thread Group will get added under the Test Plan node.
    • Rename this Thread Group as JMS pub-sub user.
 threadgroup users in jms
  • We will change the Loop Count to two. Rest of the default properties of the Thread Group are retained.
  • It means one thread group with one thread or one user sends two messages each through a request queue.

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