1152405 - Painting is slow while scrolling Amazon.com product pages

Status: RESOLVED WORKSFORME

(Core :: Graphics, defect, P3)

Description

[Vladan Djeric (:vladan)]

Example page: 
http://www.amazon.com/Logitech-G100s-Optical-Gaming-Mouse/dp/B00BCEK2LK

Profile from above page, captured with Nightly 2015-04-07 on Windows 7 64-bit:
http://people.mozilla.org/~bgirard/cleopatra/#report=d5cb2348073d34b8bd2c6b401a0da2b2fa12a79f

This was originally a user complaint on OS X in bug 1151866, reproduced by Soledad with Nightly on OS X

Comment 1

[Jeff Muizelaar [:jrmuizel]]

This seems to run pretty well on my retina MBP. We mostly stay around 60fps. There's some bad stuff going on with D2D but that's probably unrelated to the original issue.

Comment 2

[Mason Chang [Inactive] [:mchang]]

Seems like 3 issues here from the profile

1) We're painting an Inactive layer (21% cpu usage).
2) 50% of the time is spent in nsDisplayTableBorderBackground.
3) nsDisplayText::Paint takes a while

On Mac, without CSRD, I can't checkerboard much anymore. We checkerboard a lot worse on Gecko 39.

Comment 3

[Wayne Mery (:wsmwk)]

I've been in Amazon a lot in the last week. No slowness here - macbook pro + FIrefox 98.0b6.
Does anyone believe this issue still exists?

Comment 4

[Gregory Pappas [:gregp]]

Unable to reproduce in current versions.