Closed Bug 1644778 Opened 9 months ago Closed 8 months ago

Add performance metrics for the size of the browser.xhtml main window DOM


(Firefox :: General, task, P1)




Firefox 80
Tracking Status
firefox79 --- wontfix
firefox80 --- fixed


(Reporter: Gijs, Assigned: Gijs)


(Blocks 1 open bug)


(Whiteboard: [fxperf:p1])


(1 file)

The main window DOM influences window opening and startup times, and currently includes a lot of stuff that could be loaded lazily. The aim of adding performance metrics for the DOM size is (a) to be able to verify fixes and (b) to be able to catch regressions if people add an excessive amount of new DOM that could be loaded as-needed instead of hardcoded in the DOM.

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Component: General → DOM: Core & HTML
Product: Firefox → Core
Component: DOM: Core & HTML → General
Product: Core → Firefox
Depends on: 1647640
Depends on: 1648360

The severity field is not set for this bug.
:Dolske, could you have a look please?

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Flags: needinfo?(dolske)
Severity: -- → S3
Type: defect → task
Flags: needinfo?(dolske)
Priority: -- → P1
Depends on: 1647648
Depends on: 1616845

Let's land this just for linux once Dave have updated talos' Ubuntu. We can land others as a follow-up

Pushed by
add a mozperftest to measure browser.xhtml DOM size, r=tarek,dhouse,sparky
Closed: 8 months ago
Resolution: --- → FIXED
Target Milestone: --- → Firefox 80
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