title: What are the tell-tale signs that my code needs to make use of multi-threading?
body: <p>I am using a third party API which performs what I would assume are expensive operations in terms of time/resources used (image recognition, etc). What tell-tale signs are there that the code under test should be made to use threads to increase performance?</p>
  
  <p>I have a profiler and will be profiling the code I write which will rely on this API.</p>
  
  <p>Thanks</p>