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[answered]Please explain the multi-color bars above waterfall & test result questions
12-10-2016, 05:56 AM
Post: #2
RE: Please explain the multi-color bars above waterfall & test result questions
The lighter time is the time from when the browser sends the request out on the wire until the first byte comes back. The darker color is the period where the resource is actually downloading.

Looks like the production site is using HTTP/2 and the dev site is not which is why you see radically different request behavior.

With http/2 the browser can issue all of the requests to the server in one go and the server will send them back in the order the browser prioritized them (mostly).

with the dev server, the browser can only make 6 requests at a time and has to wait for each to complete before issuing more.

Generally, all else being equal, HTTP/2 will perform better so it is going to be hard to compare your dev work to the production system without having the same serving architecture.
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RE: Please explain the multi-color bars above waterfall & test result questions - pmeenan - 12-10-2016 05:56 AM

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