1347559 - Long LayerTransactions in gmail when playing a video in the Kodi media player in the background

Status: RESOLVED FIXED

(Core :: Graphics: Layers, defect, P3)

Description

[Till Schneidereit [:till]]

When playing a video in the Kodi media player[1] in the background, switching to gmail or interacting with gmail becomes noticably slower. A profile[2] shows that switching to gmail causes two long LayerTransactions, caused by a lot of time spent unter mozilla::gl::TextureImage::UpdateFromDataSource.

I couldn't reproduce the issue when playing videos in the browser, and it's much more pronounced on a high-resolution screen like my rMBPs builtin screen. There's still a lag when using an external monitor, but it's definitely less bad.

Note that Kodi, while using the GPU, doesn't cause a full load on it. I also wasn't able to reproduce the lag in either Chrome or Safari.


[1] https://kodi.tv/
[2] https://perf-html.io/public/c31ba9537417cb9185bed476e53575b807bc18ea/calltree/?invertCallstack&range=1.8569_2.3067&thread=1

Comment 1

[(no longer active)]

I've been told that on OS X, all of our compositor jankiness should be re-measured once bug 1265824 gets fixed.

Comment 2

[(no longer active)]

(FWIW this shouldn't be related to Gmail.)

Comment 3

[Kelsey Gilbert [:jgilbert]]

(In reply to :Ehsan Akhgari (super long backlog, slow to respond) from comment #1)
> I've been told that on OS X, all of our compositor jankiness should be
> re-measured once bug 1265824 gets fixed.

:milan, Is this correct?

Comment 4

[Milan Sreckovic [:milan] (needinfo for best results)]

Yes, this is something where OS X is behind, and bug 1265824 would help, if not take care of it completely.  Could treat this as a duplicate, but since there is a specific workflow, being blocked by bug 1265824 is the right call.

Comment 5

[Gregory Pappas [:gregp]]

Should no longer be an issue