Forum Moderators: Robert Charlton & goodroi
One of the ways we measure a page's speed incorporates both download and render time — we pay attention to the time taken from the moment the user clicks on a link until just before that document's body.onload() handler is called.
[maileohye.com...]
Note that this measurement starts with a click on a link. So if there are any redirects in the stream, they all add to the total. Also note:
...studies by Akamai claim 2 seconds as the threshold for ecommerce site "acceptability."