title: For a 2 core machine, will it help to set 4 processes with pm2?
body: <p>Using pm2 with node.js app, 2 core machine.</p>
  
  <pre><code>pm2 start app.js -i 4
  </code></pre>
  
  <p>Will it help the performance, or won't help at all ?</p>
  
  <p>Thanks !</p>