title: How to get CPU usage percentage measured by Collectd in InfluxDB
body: <p>I'm collecting cpu usage measured in jiffies by Collectd 5.4.0 and then storing the results in InfluxDB 0.9.4. I use the following query to get cpu percentage from InfluxDB:</p>
  
  <pre><code>SELECT MEAN(value) FROM cpu_value WHERE time &gt;= '' and time &lt;= '' GROUP BY type,type_instance
  </code></pre>
  
  <p>But when I plot the result it makes no sense. There is no pattern in cpu usage. Please let me know If I do something wrong.</p>
  
  <p>Thanks</p>