1381428 - Add probes to get granular measurements to detail DevTools load times

Status: RESOLVED WONTFIX

(DevTools :: Framework, enhancement, P3)

Description

[Mike Ratcliffe [:miker] [:mratcliffe] [:mikeratcliffe]]

This would include creation of iframes, tool load and init time etc.

Timing needs to begin as early in toolbox creation as possible.

Comment 1

[Mike Ratcliffe [:miker] [:mratcliffe] [:mikeratcliffe]]

This obviously needs to use the timing API

Comment 2

[Alexandre Poirot [:ochameau]]

Sounds great!

Do you plan to integrate that into DAMP?
It would be really handy to track more granular data.
Today we only track: open, close and reload.
You can see an example of data coming out of DAMP:
https://treeherder.mozilla.org/perf.html#/comparesubtest?originalProject=mozilla-central&newProject=try&newRevision=5b8b01b46bae6796ff6644437493d08bcb8f27c4&originalSignature=edaec66500db21d37602c99daa61ac983f21a6ac&newSignature=edaec66500db21d37602c99daa61ac983f21a6ac&framework=1&selectedTimeRange=172800

Having more detailed data may help finding regressions impacting a specific stage of the loading.

Comment 3

[Mike Ratcliffe [:miker] [:mratcliffe] [:mikeratcliffe]]

(In reply to Alexandre Poirot [:ochameau] from comment #2)
> Sounds great!
> 
> Do you plan to integrate that into DAMP?
> It would be really handy to track more granular data.
> Today we only track: open, close and reload.
> You can see an example of data coming out of DAMP:
> https://treeherder.mozilla.org/perf.html#/
> comparesubtest?originalProject=mozilla-
> central&newProject=try&newRevision=5b8b01b46bae6796ff6644437493d08bcb8f27c4&o
> riginalSignature=edaec66500db21d37602c99daa61ac983f21a6ac&newSignature=edaec6
> 6500db21d37602c99daa61ac983f21a6ac&framework=1&selectedTimeRange=172800
> 
> Having more detailed data may help finding regressions impacting a specific
> stage of the loading.

Yes, that is the plan.

Comment 4

[Mike Ratcliffe [:miker] [:mratcliffe] [:mikeratcliffe]]

I think DAMP in combination with event telemetry gives us a fairly accurate picture of this telemetry, closing.