The message I sent to Marketing: It took me a few reads to get it, but here's a loose translation:
1) Compose an HTTP request to get the asset. (Chump change time) 2) Resolve the DNS name to an IP address (or not, if it IS an IP) 3) Wait for an open "slot" in the 4 (by default) that Firefox allocates for any given domain name (depends on previous resource load times) 4) Send the request and start waiting to connect (which is GREEN BAR time) If you look carefully at the blue bars, you will see that each BLUE BAR right-hand ending corresponds to an earlier request full bar ending. In other words, if you have FIVE requests in a row to the same server, you might see this: 1) brownnnnnpurplllle 2) brownpurple 3) brownnnnnnnnnnnnpurplllllllle 4) brownnnnnnnnnpurplllllllle 5) BLUEBLUEBLUbrownpurple The BLUEBLUE part is *WAITING* for one of the first four to finish, because Firefox only opens four channels at once to any given server. So when 2) finished, 5) gets to "start" and the BLUE changes to brown. Any BLUE bits you see could contain some element of "DNS Lookup", but more likely is waiting for an open channel. More images, more BLUE, more waiting. This is why some sites have images.example.com or even images1.example.com and images2.example.com Each sub-domain gives more "channels" to Firefox, in theory. In practice more than a couple extra extra sub-domains kills the browser cache, and ends up hurting more than it helps. -- You received this message because you are subscribed to the Google Groups "Firebug" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/firebug?hl=en.
