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New data elements for Chrome (Navigation Timing)
11-17-2011, 11:48 PM
Post: #1
New data elements for Chrome (Navigation Timing)
FYI, we just rolled out an update that adds support for displaying the DOM Content Loaded and Load Event times from the W3C Navigation timing spec. Right now it is only supported in the Chrome agent but we will also be adding it to Firefox and IE9+ soon.

One of the cool things you get from the times is the duration of the handlers so you can tell if you have some expensive javascript executing in the domcontentloaded event (like $(document).ready() stuff for jquery).

The times are those that are reported from the Navigation Timing interfaces so it may not line up exactly in the waterfall with what WPT sees. We are aware of one issue where the times from Chrome appear to be under-reporting (causing the load event to look like it is earlier than the actual event in the waterfall). We're working with the Chrome team to investigate it.

Thanks,

-Pat
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12-07-2011, 01:09 PM
Post: #2
RE: New data elements for Chrome (Navigation Timing)
FYI Chrome bug responsible for under-reporting tracking entry:
http://code.google.com/p/chromium/issues...?id=104788
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