Noticeable delay in switching tabs on some sites

NEW
Unassigned

Status

()

Core
Graphics
P3
normal
a year ago
10 months ago

People

(Reporter: canuckistani, Unassigned)

Tracking

Trunk
Unspecified
Mac OS X
Points:
---

Firefox Tracking Flags

(firefox57 affected)

Details

(Whiteboard: gfx-noted)

STR:

1. open these sites:

 - https://testpilot.firefox.com/experiments/notes
 - http://www.cbc.ca/news/canada/british-columbia/ihit-on-case-of-body-found-in-langley-b-c-while-grass-fire-extinguished-1.4236848

2. switch between the two tabs using ctrl+tab or ctrl+arrow keys

Expected: 

 - tab switching should take the same amount of time regardless of which tab I'm switching from/to

Actual:

 - on OS X I consistently see a delay when switching *form* the news site *to* the Test Pilot page, but do not see a delay switching tabs from testpilot to the news site.
Flags: needinfo?(mconley)
At least on my OS X machine, this appears to be due to a slow paint on the Test Pilot site:

https://perfht.ml/2wroH17

Anything interesting in there, jrmuizel?
Flags: needinfo?(mconley) → needinfo?(jmuizelaar)
This large rasterization is all in the radial gradient that's in the background of https://testpilot.firefox.com/experiments/notes. This will be handled by WebRender with glee.
Flags: needinfo?(jmuizelaar)
(In reply to Jeff Muizelaar [:jrmuizel] from comment #2)
> This will be
> handled by WebRender with glee.

\o/

Updated

11 months ago
Component: Keyboard Navigation → Graphics
Product: Firefox → Core

Updated

10 months ago
Priority: -- → P3
Whiteboard: gfx-noted
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