1467305 - Google Inbox open/close on a category is much slower compared to Chrome

Status: RESOLVED INCOMPLETE

(Core :: Graphics: Layers, defect, P5)

Description

[:Harald Kirschner :digitarald]

Attachment: chrome-vs-ff-paint-flashing

Chrome animates while Firefox hangs for a bit and just janks the section open.

https://perfht.ml/2HqHDho

Paint shows up as expensive.

Paint flashing attachement (kept tiny for privacy) shows the fireworks of paints happening in Firefox and the surgical paint in Chrome.

Following a hunch, I could not see CSS Containment being used in the layout.

Webrender is switched off.

Comment 1

[:Harald Kirschner :digitarald]

Works much smoother with WebRender, but paint flashing is broken so can't test if Firefox overpaints.

Comment 2

[J.C. Jones [:jcj] (he/him)]

I'm guessing this belongs in layout, based on the stack trace. Also, marking as OS X, as I'm not seeing the same behavior on Linux.

Comment 3

[Xidorn Quan [:xidorn] UTC+11]

I don't see how this is related to layout to be honst given the profile.

I would suspect graphics first given the long layer transactions in the compositor thread.

Comment 4

[Daniel Holbert [:dholbert]]

Per https://twitter.com/inboxbygmail/status/1039952354450309121 ,  Google Inbox is being decommissioned.

Given that (the fact that this is much smoother under webrender configurations), we may not want to bother investigating much more here.

Comment 5

[Daniel Holbert [:dholbert]]

er, I left out the word "and" -- I meant to say "Given that (and the fact [...]"

Sorry for any confusion.

Comment 6

[u597032]

Inbox no longer existing