1522593 - Collect timing data for network requests that includes time spent on trips through the service worker, for profiling purposes

Status: NEW

(Core :: DOM: Service Workers, enhancement, P2)

Description

[Markus Stange [:mstange]]

In profiles such as http://bit.ly/2DwFvG2 , it's hard to tell at what stages a given network request spent time. Especially if a network request goes through a service worker, and back to the content main thread event loop etc.
I'd like us to collect a breakdown of all stages that such a request goes through, including all queuing times in various event loops, so that we can display those times in the profiler on a given request.

Comment 1

[Release mgmt bot [:suhaib / :marco/ :calixte]]

The priority flag is not set for this bug and there is no activity for 2 weeks.
:overholt, could you have a look please?

Comment 2

[Andrew Overholt [:overholt]]

The team's really close to landing a big refactoring of the network interception code but we can definitely add some instrumentation once that lands and sticks.