title: How accurate are JMeter results
body: <p>I am using JMeter to test my web application.
  I am able to run test and can see results using various listener.
  To reduce resource when i run with more than 1000 thread i run jmeter in non gui mode and after completion of test view the result in graph mode.
  I want to know how accurate are Jmeter results(average/median response time).
  Let suppose if 1000 users are using my web application and they have response time of 20 ms.
  If i simulate 1000 users using JMeter and then see average ,median time in Jmeter.
  Since JMeter is creating lot of threads and has its own processing , is it possible that average/media response time  in JMeter is higher than actual.</p>