Closed Bug 1662960 Opened 4 years ago Closed 4 years ago

OpenStreetMap Wiki slow rendering "Austria/Radwege"

Categories

(Core :: CSS Parsing and Computation, defect)

Product:
Core
Component:
CSS Parsing and Computation
Type:
defect

Tracking

()

Status:
RESOLVED DUPLICATE of bug 1381071
Tracking Flags:
Tracking Status
firefox82 --- affected

People

(Reporter: yoasif, Unassigned)

Details

From: https://github.com/mozilla-mobile/fenix/issues/12712

Basic information

Steps to Reproduce:

  1. Visit https://wiki.openstreetmap.org/w/index.php?title=Austria/Radwege&mobileaction=toggle_view_mobile (mobile page)
  2. Click onto "Radwege in Wien"
  3. Scroll

Expected Results:

Render after a few seconds, acceptable scrolling.

Actual Results:

Very slow render, blacked out scroll.

More information

Screenshot: https://github.com/mozilla-mobile/fenix/files/4943635/OpenStreetMaps.zip

Profile URL: https://share.firefox.dev/3lIedkd

Basic systems configuration:

OS version: Android 5.1.1

GPU model: Adreno 305

Number of cores: Quad-core 1.2 GHz Cortex-A7

Amount of memory (RAM): 1GB

Thanks so much for your help.

Component: Performance → CSS Parsing and Computation

They are repeatedly calling getComputedStyle on non-rendered elements, that's bug 1381071. It makes me a bit sad to take the memory hit of storing these...

If openstreetmap.org updated their mediawiki instance then this issue would go away. Anyhow I sent a patch upstream to improve this, see https://phabricator.wikimedia.org/T262859.

Status: NEW → RESOLVED
Closed: 4 years ago
Resolution: --- → DUPLICATE
Summary: OpenStreetMap Wiki slow rendering "Austria/Radwege → OpenStreetMap Wiki slow rendering "Austria/Radwege"
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