multiple user logins in jmeter

Question

I am using jmeter to test a php application. I need to create a different thread with a unique session for each user. Because in my application you can only have one login per user at a time so putting 100 times the same user I will not get to any conclusion. I have created 40 users user0,user1....user39 with the same password is there a way to automatically create simultaneous threads for each of them?

Thanks

Answer 1

I just implemented this using jmeter for an app that uses Spring Security (It would be very similar to PHP). This is fairly straightforward, basically:

1) Create a new CSV file using a text editor Ex: CSVSample_user.csv

   username1, password1    username2, password2 

2) In jmeter, create a CSV Data Set Config element

  Thread Group>add>Config Element>CSV Data Set Config   => Assign variable names (see image) 

3) Create an HTTP Request element

  Thread Group>add>Sampler>HTTP Request   => Create a POST with parameters, have the variable you created       put the values for the parameter. (See bottom image). 

NOTE: There are other elements you need, such as cookie manager, etc. Also number of threads needs to be set to the number of login users.