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What is Apache JMeter?

The Apache JMeter™ application is open source software, a 100% pure Java application designed to load test functional behavior and measure performance. It was design for testing Web Applications but has since expanded to other test functions.
It can used to simulate a heavy load on a server, group of servers, network or object to test its strength or to analyze overall performance under different load types.

How to send GET HTTP Request in JMeter?

We can perform GET as well as POST operation in JMeter. In this tutorial, we will only explain how we can perform GET operation.

Create a Test Plan in JMeter

Step 1 – Add Thread Group

• Select Test Plan on the tree
• Add Thread Group                                                                                           
  • To add Thread Group: Right click on the “Test Plan” and add a new thread group: Add -> Threads (Users) -> Thread Group

In the Thread Group control panel, enter Thread Properties as follows: We will take an example of row no 5.

• Number of Threads: 5 – Number of users connects to the target website
• Loop Count: 5  – Number of time to execute testing
• Ramp-Up Period: 5 – It tells JMeter how long to delay before starting the next user. For example, if we have 5 users and a 5 -second Ramp-Up period, then the delay between starting users would be 1 second (5 seconds /5 users).

Step 2 –  Adding JMeter elements

The JMeter element used here is HTTP Request Sampler. In HTTP Request Control Panel, the Path field indicates which URL request you want to send.

2.1 Add HTTP Request Sampler

To add: Right-click on Thread Group and select: Add -> Sampler -> HTTP Request.

Below mentioned are the values use in HTTP Request to perform the test

• Name – HTTP Request 
• Server Name or IP – localhost
• Port – 8010
• Method – GET
• Path – /demo/helloworld/demo

OR

URL – https://reqres.in/api/users?page=2

• Name – HTTP GET Request 
• Protocol – https
• Server Name or IP – reqres.in
• Port –
• Method – GET
• Path – /api/users?page=2

Step 3 – Adding Listeners to Test Plan

Listeners – They shows the results of the test execution. They can show results in a different format such as a tree, table, graph or log file

We are adding  View Result Tree listener

View Result Tree – View Result Tree show results of the user request in basic HTML format

To add: Right click Test Plan, Add -> Listener -> View Result Tree

Complete Test Plan will look like as shown below

Step 4 – Save the Test Plan

To Save: Click File Select -> Save Test Plan as ->Give name of the Test Plan. It will be save as .jmx format.

Sample .jmx File

Step 5  – Run the Test Plan

Click on Green Triangle as shown below to run the test.

Step 6 – View the Execution Status

Click on View Result Tree to see the status of Run. Successful request will be of Green color in the Text Section.

Sample of Failed Request. Failed request will be of Red color in View Result Tree under Text option. This screen sows the reason for the failure of the request like Connection refused here.

That’s it! Congratulations on making it through this tutorial and hope you found it useful! Happy Learning!!