Yes performance does improve a great deal as the browsers pre-fetch in parallel. Its definitely a long overdue feature for browsers :) But it will still should be more efficient / faster to do one request instead of many in parallel. Even with parallel fetching the default in the Firefox nightlies its 5 scripts at a time. So you still end up doing a few round trips when you have a high script count.
--michael
Aryeh Gregor wrote:
On Mon, Feb 23, 2009 at 2:35 PM, Michael Dale mdale@wikimedia.org wrote:
... I was looking at commons upload form JavaScript load profile is like a long waterfall or rather a steep river :( http://metavid.org/promo/round_trips.png
Note that this should be dramatically improved in next-gen browsers like Firefox 3.1, IE8, and whatever the next stable branch of WebKit is. All of these three can now load scripts in parallel, last I heard.
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