mPulse Boomerang Tutorial: Adding additional timers to the beacon

By default, Boomerang includes several timers on each beacon, such as:

Total Page Load time (t_done)
Back-End time (t_resp)
Front-End time (t_page)

You can also add additional timers to a beacon via BOOMR.plugins.RT.startTimer and BOOMR.plugins.RT.setTimer.

These timers can be used to track sub-components on the page or other arbitrary events.

The timer name given to BOOMR.plugins.RT.startTimer or BOOMR.plugins.RT.setTimer and elapsed time of the timer is added to the t_other beacon parameter.

If there are multiple additional timers, they are appended to each other, separated by commas.

Example beacon data:

t_other=header|1234,ads|500

Example usage:

<html>
  <head>
    <script>
    // measure how long it took for this JavaScript to start
    BOOMR.plugins.RT.setTimer("t_js", BOOMR.now() - performance.timing.navigationStart);

    // start tracking how long it takes to execute things in the HEAD
    BOOMR.plugins.RT.startTimer("t_head");
    </script>
    <title>Page Title</title>
    <meta http-equiv="Content-type" content="text/html; charset=utf-8">
    <!-- ... -->
    <script>
    // stop tracking how long it takes to execute things in the HEAD
    BOOMR.plugins.RT.endTimer("t_head");
    </script>
  </head>
  <!-- ... -->

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