title: node js cpu 100%
body: <p>We're having a problem where every once in a while one of our environments our node app runs on 100% CPU. The server isn't very active and usually runs on 0%-2% CPU.
  I was wondering what are the common issues that might cause this problem and what would be the best way to find out what causing this issue.</p>
  
  <p>Server specs:</p>
  
  <blockquote>
    <p>node version 0.8.14<br>
    ubuntu 11.10<br>
    Intel(R) Xeon(R) CPU E5645  @ 2.40GHz</p>
  </blockquote>
  
  <p>Node packages used:</p>
  
  <pre><code>"express" : 2.5.x,
  "log" : "1.2.x",
  "redis" : "0.8.x",
  "socket.io" : "0.9.x",
  "mongodb": "&gt;= 0.9.6-7",
  "passport" : "0.x.x",
  "passport-local" : "0.x.x",
  </code></pre>