How does Chartbeat measure Server Load Time?

Question

It seems that Chartbeat is reporting my Server Load Time incorrectly.

Does anyone know how Chartbeat measures this data so I can make this metric more accurate?

Answer 1

From Chartbeat: How fast is my site? What information do I get from Load Times?

User Page load

... It is calculated by timing the two pieces of Chartbeat javascript on the site. This means it includes all the Javascript and embedded items you have on the page and tells you how long it's taking to load on the user's browser.

If the load times look incorrect, check to make sure that you have:

<script type="text/javascript">var _sf_startpt=(new Date()).getTime()</script>

In the head of your page before loading your other resources, and the other code they give you just before the body closes.

Answer 2

chartbeat server load time is a measure of how long time it takes to load the HTML from your server, from servers on the east coast US.

http://chartbeat.com/faq/