title: Does eventlet with celery executes tasks in parallel?
body: <p>This post is in continuation with my previous post - <a href="https://stackoverflow.com/questions/42806765/celery-how-to-implement-single-queue-with-multiple-workers-executing-in-parallel">celery how to implement single queue with multiple workers executing in parallel?</a></p>
  
  <p>I implemented celery to work with eventlet using this command :-</p>
  
  <pre><code>celery -A project worker -P eventlet -l info --concurrency=4
  </code></pre>
  
  <p>I can see that my tasks are getting moved to active list faster (In flower) but i am not sure if they are executing in parallel? I have a 4 core server for production but I am not utilizing all the cores at the same time.</p>
  
  <p>My question is :-</p>
  
  <blockquote>
    <p>how can I use all 4 cores to execute tasks in parallel?</p>
  </blockquote>