Add listener Response time graph.Same like in aggregate graph we will have two tabs i.e Settings and Graph in this listener as well.

We can run a test and see reuslts in graphical format in this test as well.

We will have time on x axis.We can see the requests as color coded lines and we can see their behaviour over time.

I is used to measute how much is the time taken by threads to get response from server. If we have 20 threads and response time is maximum 10 secs it is a good things as we are getting response in .5 sec but if it is 20 sec or 40 secs its not a good thing as response per thread is 1 sec or 2 sec then.