1651605 - Disable Service Worker Debugging

Status: RESOLVED FIXED

(DevTools :: Debugger, task, P2)

Description

[Jan Honza Odvarko [:Honza] (always need-info? me)]

Data coming from our SW experiment are indicating 7% decrease in user engagement and also, opening the Debugger panel is slower. We decided to disable SW support on all channels for now.

Data report:
https://metrics.mozilla.com/~sguha/mz/ds-455/code.1.html

This should be done in Fx80

Honza

Comment 1

[Jan Honza Odvarko [:Honza] (always need-info? me)]

The patch should also be uplifted to 79

Honza

Comment 2

[Julian Descottes [:jdescottes]]

Attachment: Bug 1651605 - Disable Service Worker support in DevTools Debugger

We ran an experiment to assess the impact of the feature.
We could verify a significant performance impact on the opening times for the debugger.
It also led to a decrease in overall devtools usage and retention.
Therefore we are disabling the feature until we can implement it with better performance.
This should be implemented with https://bugzilla.mozilla.org/show_bug.cgi?id=1651522

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/4c48ff27577f
Disable Service Worker support in DevTools Debugger r=Honza

Comment 4

[Julian Descottes [:jdescottes]]

Comment on attachment 9163182 [details]
Bug 1651605 - Disable Service Worker support in DevTools Debugger

Beta/Release Uplift Approval Request

• User impact if declined: Service Worker support in debugger severely impacts the performance of DevTools.
• Is this code covered by automated tests?: No
• Has the fix been verified in Nightly?: No
• Needs manual test from QE?: No
• If yes, steps to reproduce:
• List of other uplifts needed: None
• Risk to taking this patch: Low
• Why is the change risky/not risky? (and alternatives if risky): This is only a preference flip. This preference was false on all channels except Nightly.
  We are just setting it back to false everywhere, this should have no impact.
• String changes made/needed:

Comment 5

[Andreea Pavel [:apavel]]

https://hg.mozilla.org/mozilla-central/rev/4c48ff27577f

Comment 6

[Ryan VanderMeulen [:RyanVM]]

Comment on attachment 9163182 [details]
Bug 1651605 - Disable Service Worker support in DevTools Debugger

Approved for 79.0b8.

Comment 7

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/releases/mozilla-beta/rev/6dd099265573