title: Maximum number of concurrent connections jBoss
body: <p>We are currently developing a servlet that will stream large image files to a client. We are trying to determine how many Jboss nodes we would need in our cluster with an Apache mod_jk load balancer. I know that it takes roughly 5000 milliseconds to serve a single request. I am trying to use the forumula here <a href="http://people.apache.org/~mturk/docs/article/ftwai.html" rel="nofollow noreferrer">http://people.apache.org/~mturk/docs/article/ftwai.html</a> to figure out how many connections are possible, but I am having an issue because they don't explain each one of the numbers in the formula. Specifically they say that you should limit each server to 200 requests per cpu, but I don't know if I should use that in the formula or not. Each server we are using will have 8 cores so I think the forumula should either go like this:</p>
  
  <p>Concurrent Users = (500/5000) * 200 * 8 = 100 concurrent users</p>
  
  <p>Or like this:</p>
  
  <p>Concurrent Users = (500/5000) * (200 * 8) * 8 = ~1200 concurrent users</p>
  
  <p>It makes a big difference which one they meant. Without a example in their documentation it is hard to tell. Could anyone clarify?</p>
  
  <p>Thanks in advance.</p>