title: Which tool can be used to generate a diagram of functions executed annotated with execution times?
body: <p>I'm using Drupal and would like to get a graph of functions called annotated with the times the functions took to execute. I found this image which demonstrates what I'm looking for:</p>
  
  <p><a href="https://i.stack.imgur.com/wsQI3.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wsQI3.png" alt="http://drupal.org/files/purge.png"></a></p>
  
  <p>However, I can't find a tool that can produce a similar image. What kind of tool am I looking for?</p>