title: What is Wall clock in maven build
body: <p>When I build my project using threads</p>
  
  <p>i.e <code>mvn -T 4 install -Dmaven.test.skip=true</code></p>
  
  <p>I am getting like</p>
  
  <pre><code>Total Time: 10:17.623s (Wall Clock)
  </code></pre>
  
  <p>What is meant by Wall clock here? When I build normally I am not getting that word. I searched, but I am unable to find the information.</p>
  
  <p>Thanks in advance.</p>