title: Visual VM: how to interpret Self Time vs Self Time (CPU)
body: <p>I already read <a href="https://stackoverflow.com/questions/14626475/visualvm-and-self-time">VisualVM and Self Time</a></p>
  
  <p>But I still don't get how to interpret. Here is my case :</p>
  
  <pre><code>Self Time : 500000ms
  Self Time (CPU) : 72000ms
  </code></pre>
  
  <p>I understand that the method took 72s of CPU execution time (So real work without sub-method called).</p>
  
  <p>Can I interpret that Threads have been blocked in this method for some reason during 500-72=428s ?</p>
  
  <p>Which would mean I can begin to search concurrent access etc... ?</p>
  
  <p><em>Context</em> : Webapp under Tomcat</p>