title: Graphite - render precision lower than 1 minute
body: <p>I'm trying to get arroud with Graphite. I have problem getting graph render precision lower that minute. I already set refresh time to 1 second, display time to relateive -5 minutes and retention to:</p>
  
  <pre><code>retentions = 1s:21d
  </code></pre>
  
  <p>Graph is updated every second, but the precision is still one minute. How can I change this ? </p>