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boomerang howto #10:
load time of a page prerendered by Google Chrome

This use case is based on Google Chrome's prerender capabilities introduced with Chrome 13. We use two pages for this use case. This is page #2 of the example. See Page #1 for the full explanation.

If you clicked the link to this page from Page #1, you should see page performance results show up below. It may take a while if this is the first time you're doing the test since testing your bandwidth takes about 6 seconds. You can also click the link to Page #1 to see the same output on Page #1.

In the box below, if rt.start is set to cookie, you should see the following numbers:

  1. t_done (load time): Time from click to display (perceived load time)
  2. t_load: Time from fetchStart/navigationStart to prerender finish
  3. t_prerender: Time from fetchStart/navigationStart to display
  4. t_postrender: Time from prerender finish to display

If rt.start is set to navigation (or something else), then t_done is the same as t_prerender. If t_prerender is not set, then this page wasn't prerendered, and t_done is the actual perceived load time.