Simple Parameterization in Jmeter:

When you want to run/execute one test plan for more than one user at the same time you go for parameterization. It is a method of generalizing an action.

Here is a simple example to parameterize a Google search for three different users.

1. Record a simple Google search in Jmeter. Put the search keyword as “Jmeter”. The result will be something like this.

We will parameterize the search keyword “Jmeter”.

2. Now add a CSV Data set Config and a Listener element to the thread group.

Add->Config Element->CSV Data Set Config
Add->Listener->View Results Tree

3. Now open a notepad (inside bin) and enter your keywords.

Save the file as search.csv. The extension csv makes it a comma separated Value (CSV) file.

4. Now select the CSV Data set Config element and fill in the fields as follows

Filename: search.csv

(Give the path name if you have put it inside a subfolder e.g. foldername\search.csv)

Variable Names: A

(This variable name is referenced in the search sample.)

Delimiter: ,

5. Now go to search sample and change the value of variable q to ${A}.In Jmeter we reference a variable using ${} .For each iteration the value of q will be replaced as fetched by variable A.

6. Now go to thread group and make the number of threads (users) to 3.

7. Run the script(ctr+R) and observe the result in result tree.