Open Bug 1483268 Opened 6 years ago Updated 18 days ago

1.17ms uninterruptible reflow at showTooltip@chrome://browser/content/browser.js:4539:5

Categories

(Firefox :: Toolbars and Customization, enhancement, P3)

Product:
Firefox
Component:
Toolbars and Customization
Platform:
x86_64
Linux
Type:
enhancement

Tracking

()

Project Flags:
Performance Impact low
Tracking Flags:
Tracking Status
firefox63 --- affected

People

(Reporter: geeknik, Unassigned)

Details

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

Here's the stack:

showTooltip@chrome://browser/content/browser.js:4539:5
I am going to assign the "Firefox: Toolbars and customization" component for it.
Component: Untriaged → Toolbars and Customization
I suspect this is from getting at the screen coords from the box object: https://searchfox.org/mozilla-central/rev/83562422ecb0f5683da7a9a26ce05ce62bc0c882/browser/base/content/browser.js#4572
Priority: -- → P3
Whiteboard: [ohnoreflow][fxperf] → [ohnoreflow][fxperf:p3]
Severity: normal → S3

Those usages of the box object were removed in bug 1519952, however, using Oh No Reflow, I can still see us causing a layout flush when opening content-area tooltips on this line:

https://searchfox.org/mozilla-central/rev/159929cd10b8fba135c72a497d815ab2dd5a521c/browser/base/content/browser.js#4790-4795

Performance Impact: --- → low
Keywords: perf:responsiveness
Whiteboard: [ohnoreflow][fxperf:p3] → [ohnoreflow]
You need to log in before you can comment on or make changes to this bug.