title: how to debug node.js causing 100% cpu usage?
body: <p>I have a node app that uses express and redis. On our development server, after a bit of use node starts to use 100% cpu. The application still responds but top reports node using 100%. The cpu doesn't drop until node is restarted.</p>
  
  <p>I have not nailed it down to any particular route or function that is causing it. </p>
  
  <p>What is the best way to diagnose this problem? </p>
  
  <p>I looked at node-inspector with the v8-profiler and it gave me the same error that is reported here
  <a href="https://github.com/dannycoates/v8-profiler/issues/10" rel="noreferrer">https://github.com/dannycoates/v8-profiler/issues/10</a></p>