Jiffy Firebug Plugin: Fine grained calculation of performance timings
Ajaxian has a post up this morning on Jiffy, a Firebug plugin “that adds a new tab showing fine grained performance data. You want to know the time between the onunload of the previous page, the first rendering, time until onload, time after, and more.”
The Ajaxian article has a nice overview, and the post by Bill Scott (Rico, ex-Yahoo, now @ Netflix) is really detailed and worth reading. Good stuff.

