title: Time profiler between a certain range of time?
body: <p>I wonder how can I setup the time profiler instrument to show me the calls that are done between a period of time. I don't want it to show me all the calls of running time.
  Is this possible?</p>
  
  <p>I've been trying with flags but no see anything to change.</p>
  
  <p>Basically I want to focus on a certain peak.</p>