I'm interested in knowing the actual average page loadtime for my webapplication.
Simplistically, how log does my average visitor wait before they can start using a page on my site. From when they click the link to my site until the site is finished rendering & ready to accept input.
The standard solution seems to be to use Javascript to compare the time from a script in the until a script in the window.onload() event.
(See: http://www.dreamincode.net/code/snippet1908.htm)
This doesn't seem like a very acturate measure to me, as it ignores the time taken to resolve my domain & receive enough HTML content to begin Javascript parsig.
It also looks like Safari fires window.onload before the page has actually finished loading (http://www.howtocreate.co.uk/safaribenchmarks.html).
Any ideas?
Is it possible to get the time a the current request was initiated via Javascript?
What event fires after everything is ready reliably across all browsers?
http://www.webpagetest.org/ is an excellent resource for measuring load time
Also google chorme dev tools has a Timeline panel where you can record events, Here is a 2.5minute video showing you how Timeline in google chrome works http://www.youtube.com/watch?v=RhaWYQ44WEc