847467 - Janky scrolling on Google Trends page

Status: RESOLVED WORKSFORME

(Core :: SVG, defect)

Description

[Mayank Bansal]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:22.0) Gecko/20130228 Firefox/22.0
Build ID: 20130228165151

Steps to reproduce:

1. Create fresh profile
2. Go to given URL : https://www.google.com/trends/explore#q=%22ARM%20architecture%22%2C%20%22MIPS%20architecture%22%2C%20%22x86%20architecture%22%2C%20%22POWER%20architecture%22%2C%20%22SPARC%20architecture%22&cmpt=q

3. Scroll


Actual results:

Janky, stuttery scrolling


Expected results:

Smooth scrolling.

Profile with HWA on : http://people.mozilla.com/~bgirard/cleopatra/#report=d58fb0c4859875dd7bd6c05d27649043ffb4dc38


Profile with HWA off : http://people.mozilla.com/~bgirard/cleopatra/#report=40cf759a9667c9097e27ae034ad7c3e89565c308

HWA off is better than HWA on, but is still janky.

Comment 1

[Matthias Versen [:Matti]]

SVG or graphics ?

Comment 2

[Jonathan Watt [:jwatt]]

The charts and map are invalidating for each change in scroll position.

Comment 3

[Jonathan Watt [:jwatt]]

Attachment: reduced testcase

Seems that we're invalidating SVG with a clip-path on every scroll offset change.

Comment 4

[Markus Stange [:mstange]]

This seems fixed, probably by the first patch in bug 912953.