911151 - Very low performance with Google Charts Bubble chart

Status: NEW

(Core :: Graphics: WebRender, defect)

Description

[Martin Stránský [:stransky] (ni? me) (PTO, Back Jun 24)]

Attachment: testcase

I'm not sure it's the right component so please reassigning if I'm wrong.

Downstream bug: https://bugzilla.redhat.com/show_bug.cgi?id=991078

Firefox performance is very low when compared to Chrome when scrolling a page containing Google Charts Bubble chart with non-trivial amount of values. 

Version-Release number of selected component (if applicable):
firefox-22.0-1.fc18.x86_64

How reproducible:
always

Steps to Reproduce:
1. open attached html file in Firefox and Chrome and scroll up and down in both browsers. 
2. Observe performance differences when scrolling over the Bubble charts

Actual results:
Chrome scrolls smoothly, Firefox freezes for seconds

Expected results:
same performance as in Chrome

Additional info:
The reproducer is missing images and stylesheet, but it has no impact on it's ability to reproduce the problem. 

Tested on system with 4-core i7 @ 2.9GHz and 8G ram, so low system resources are not the problem.

Comment 1

[Henri Sivonen (:hsivonen) (on leave)]

The problem occurs after the HTML parser is done. Trying another component.

Comment 2

[(mostly gone) XtC4UaLL [:xtc4uall]]

FWIW, the janky Scrolling happens on Windows 7, too (HWA on & off).

SPS Profile against Mozilla/5.0 (Windows NT 6.1; WOW64; rv:26.0) Gecko/20100101 Firefox/26.0 ID:20130901030218 CSet: b6c29e434519:

HWA on:
http://people.mozilla.com/~bgirard/cleopatra/#report=567b21becae2f066f14a55d87a0ecb15584d319d

HWA off:
http://people.mozilla.com/~bgirard/cleopatra/#report=5dc40d2ba46da569fa9d220a1fa1a2c8bc361a50

SVG Painting Perf, no?

Comment 3

[Gregory Pappas [:gregp]]

https://share.firefox.dev/3xkix3o

Comment 4

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:gw, could you have a look please?

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