title: MongoDB query to get CPU usage
body: <p>Using mongodb, I know that I can use the command</p>
  
  <pre><code>db.serverStatus()
  </code></pre>
  
  <p>Which will return a lot of information about the current mongo instance, including memory information:</p>
  
  <pre><code>"mem" : {
      "bits" : 64,
      "resident" : 4303,
      "virtual" : 7390,
      ...
  }
  </code></pre>
  
  <p>Is there anything similar, or anything in this output that I may be missing, that will also report <strong>CPU</strong> usage details?</p>
  
  <p>i.e.</p>
  
  <pre><code>"cpu" : {
      "usr" : 32,
      "wa"  : 16,
      "id"  : 52
  }
  </code></pre>