title: How can I find the average number of concurrent users for IIS to simulate during a load/performance test?
body: <p>I'm using JMeter for load testing.  I'm going through and exercise of finding the max number of concurrent threads (users) that our webserver can handle by simply increasing the # of threads in my distributed JMeter test case, and firing off the test.</p>
  
  <p>Then -- it struck me, that while the MAX number may be useful, the <em>REAL</em> number of users that my website actually handles on average is the number I need to make the test fruitful.</p>
  
  <p>Here are a few pieces of information about our setup:</p>
  
  <ul>
  <li>This is a mixed .NET/Classic ASP site.  Upon login, a browser session (with timeout)  is created in both for the users.</li>
  <li>Each session times out after 60 minutes.</li>
  </ul>
  
  <p>Is there a way using this information, IIS logs, performance counters, and/or some calculation that will help me determine the average # of concurrent users we handle on our production site?</p>