title: Why JMeter Ultimate Thread Groups create incorrect number of users?
body: <p>When I'm using the original JMeter Thread Groups and set 10 threads (users), it fires 10 external HTTP calls.</p>
  
  <p>When I changed it to Ultimate Thread Groups (UTG) and set the following attributes...</p>
  
  <ul>
  <li>Start Threads Count = 10</li>
  <li>Initial Delay = 0</li>
  <li>Startup Time = 60</li>
  <li>Hold Load For = 30</li>
  <li>Shutdown Time = 10</li>
  </ul>
  
  <p>...it fires thousands of external HTTP calls. Even the Stepping Thread Groups (STG) and Concurrency Thread Groups (CTG) also behave the same as UTG.</p>
  
  <p>Why this happens when using non-original JMeter thread groups? I'm looking for ways to create 10 users that create 1 external HTTP call each (means 10 in total for the whole test plan) using UTG, STG or CTG but I don't really understand why this happens.</p>
  
  <p><strong>Screenshots when using original Thread Group</strong></p>
  
  <p><a href="https://i.stack.imgur.com/fFubA.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/fFubA.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/zHQ8c.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zHQ8c.png" alt="enter image description here"></a></p>
  
  <p><strong>Screenshots when using original Ultimate Thread Group</strong></p>
  
  <p><a href="https://i.stack.imgur.com/ih0HD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ih0HD.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/4trkb.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4trkb.png" alt="enter image description here"></a></p>