952362 - improve Performance on Holiday Lites (IE Test Drive)

Status: NEW

(Core :: Graphics, defect)

Description

[(mostly gone) XtC4UaLL [:xtc4uall]]

SPS against Mozilla/5.0 (Windows NT 6.1; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0 ID:20131219030202 CSet: 5c7fa2bfea8b:

http://people.mozilla.org/~bgirard/cleopatra/#report=afedbff5a8d04ff5b45d024aa228aff7e2b53bc0

on my box for testing against "All"
Trunk: ~ 32s
MSIE11: ~ 21s
Chrome 34: way much slower

Comment 1

[Boris Zbarsky [:bzbarsky]]

That profile is all painting.

Comment 2

[Vladimir Vukicevic [:vlad] [:vladv] (needinfo me, slow to respond)]

On my laptop, we slightly beat IE10 on every individual test, usually by about 0.1-0.2s.  The individual tests are in the 5s range.  On the "All" test, we get 21.33s, IE10 gets 22.36.

Maybe this got faster with IE11, but it seems like we're basically the same right now?  It's all in painting, and it does look like it's all in d2d/d3d10..