Closed Bug 1191995 Opened 9 years ago Closed 7 years ago

Poor scrolling performance on http://kangax.github.io/compat-table/es6/, due to CSS filter rendering

Categories

(Core :: Layout, defect)

Product:
Core
Component:
Layout
Version:
42 Branch
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED DUPLICATE of bug 1267898
Tracking Flags:
Tracking Status
firefox39 --- affected
firefox40 --- affected
firefox41 --- affected
firefox42 --- affected
firefox-esr31 --- unaffected
firefox-esr38 --- affected

People

(Reporter: daniel.nr01, Assigned: tschneider)

References

(
URL
)

Details

(Keywords: perf) 

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:42.0) Gecko/20100101 Firefox/42.0
Build ID: 20150806030205

Steps to reproduce:

* Visit http://kangax.github.io/compat-table/es6/
* Scroll the page

I'm running latest Nightly on Windows 7 64-bit.


Actual results:

The scrolling is janky. By recording a session with the preformance devtools you can see that almost all time is spent in painting and that we get a very low avg fps.


Expected results:

The scrolling should be smooth as in IE 11 and Chrome 44.
Product: Firefox → Core
Pushlog:
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=9b157630e5ab&tochange=697c4b245de0

Triggered by: 697c4b245de0	Tim Nguyen — Bug 1057180 - Enable CSS Filters by default. r=dbaron
Blocks: 1057180
Status: UNCONFIRMED → NEW
status-firefox39: --- → affected
status-firefox40: --- → affected
status-firefox41: --- → affected
status-firefox42: --- → affected
status-firefox-esr31: --- → unaffected
status-firefox-esr38: --- → affected
Ever confirmed: true
Keywords: perf
Flags: needinfo?(ntim.bugs)
Flags: needinfo?(dbaron)
Flags: needinfo?(ntim.bugs)
Flags: needinfo?(mvujovic)
Flags: needinfo?(mstange)
Flags: needinfo?(dbaron)
Summary: Poor scrolling performance on http://kangax.github.io/compat-table/es6/ → Poor scrolling performance on http://kangax.github.io/compat-table/es6/, due to CSS filter rendering
Deferring needinfo to Markus, since I'm not working on Firefox these days.
Flags: needinfo?(mvujovic)
This one needs a closer look...
Flags: needinfo?(bugs)
To Tobias for profiling and diagnosis.
Assignee: nobody → tschneider
Flags: needinfo?(mstange)
Flags: needinfo?(bugs)
After profiling and talking to Markus, the poor scrolling performance seems to be related to https://bugzilla.mozilla.org/show_bug.cgi?id=975644, not canvas filters.
Depends on: 975644
I think we can close this as a dupe of Bug 1267898 (which depends on Bug 975644), since it's really about "fake" position: sticky performance (because we don't support pos:sticky on thead yet). 

(Or we can close the other as a dupe of this and update the title)

WDYT Tobias?
Flags: needinfo?(tschneider)
Status: NEW → RESOLVED
Closed: 7 years ago
Flags: needinfo?(tschneider)
Resolution: --- → DUPLICATE
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