Open Bug 1364324 Opened 7 years ago Updated 9 months ago

0.98ms uninterruptible reflow at AreaPositionManager@resource://app/modules/DragPositionManager.jsm:24:23

Categories

(Firefox :: Toolbars and Customization, defect, P4)

Product:
Firefox
Component:
Toolbars and Customization
Type:
defect

Tracking

()

Project Flags:
Performance Impact low

People

(Reporter: rjward0, Unassigned)

References

(Blocks 1 open bug)

Details

(Keywords: perf, perf:frontend, Whiteboard: [ohnoreflow]) 

Here's the stack:

AreaPositionManager@resource://app/modules/DragPositionManager.jsm:24:23
start@resource://app/modules/DragPositionManager.jsm:394:33
_onDragStart/this._initializeDragAfterMove@resource://app/modules/CustomizeMode.jsm:1619:9
_onDragOver@resource://app/modules/CustomizeMode.jsm:1641:7
handleEvent@resource://app/modules/CustomizeMode.jsm:1490:9
EventListener.handleEvent*_addDragHandlers@resource://app/modules/CustomizeMode.jsm:1086:5
enter/<@resource://app/modules/CustomizeMode.jsm:355:7
TaskImpl_run@resource://gre/modules/Task.jsm:319:42
process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:922:23
walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:806:7
Promise*scheduleWalkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:739:11
schedulePromise@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:770:7
completePromise@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:707:7
deferredWrapToolbarItem/</<@resource://app/modules/CustomizeMode.jsm:863:9
Component: Untriaged → Toolbars and Customization
Flags: qe-verify?
Priority: -- → P2
Priority: P2 → P3
Whiteboard: [ohnoreflow][qf][photon-performance] → [ohnoreflow][qf][reserve-photon-performance]
Flags: qe-verify? → qe-verify-
Customize mode = not-super-urgent so p3
Whiteboard: [ohnoreflow][qf][reserve-photon-performance] → [ohnoreflow][qf:p3][reserve-photon-performance]
Priority: P3 → P4
Keywords: perf
Whiteboard: [ohnoreflow][qf:p3][reserve-photon-performance] → [ohnoreflow][qf:p3][fxperf]
Whiteboard: [ohnoreflow][qf:p3][fxperf] → [ohnoreflow][qf:p3][fxperf:p3]
Performance Impact: --- → P3
Whiteboard: [ohnoreflow][qf:p3][fxperf:p3] → [ohnoreflow][fxperf:p3]
Severity: normal → S3

Likely due to the .getBoundingClientRect() call at https://searchfox.org/mozilla-central/rev/c615dc4db129ece5cce6c96eb8cab8c5a3e26ac3/browser/components/customizableui/DragPositionManager.sys.mjs#12

Keywords: perf:frontend
Whiteboard: [ohnoreflow][fxperf:p3] → [ohnoreflow]
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