Bug 291791

Summary:

[GTK] Constant 300% CPU usage on the Loop fintech website's front page due to animations

Product:

WebKit

Reporter:

Jeff Fortin <nekohayo>

Component:

WebKitGTK

Assignee:

Nobody <webkit-unassigned>

Status:

NEW

Severity:

Normal

CC:

bugs-noreply

Priority:

Keywords:

Performance

Version:

WebKit Nightly Build

Hardware:

OS:

Linux

URL:

https://www.bankonloop.com

Bug Depends on:

Bug Blocks:

245783, 268972

Attachments:

Description	Flags
Sysprof 48.0 capture with MiniBrowser	none
Screenshot of Sysprof's flame graph	none
Screenshot of Sysprof's marks	none

Jeff Fortin

Reported 2025-04-19 09:18:14 PDT

Created attachment 474962 [details] Sysprof 48.0 capture with MiniBrowser I was pointed out to this bank's website that uses a ton of CPU (ex: 300%) when visiting its front page. To reproduce, simply visit https://www.bankonloop.com It happens on Epiphany 47.x, 48.0, TP, Canary, and MiniBrowser with Fedora 42's WebKitGTK 2.48.1 on GNOME 48's Wayland session, on any computer. Attached is a Sysprof 48 capture on MiniBrowser from Fedora 42's packaged WebKitGTK version, using this command: sysprof-cli --gtk -f -- /usr/libexec/webkitgtk-6.0/MiniBrowser --private https://www.bankonloop.com --- Corresponding Firefox issue: https://bugzilla.mozilla.org/show_bug.cgi?id=1954307

Attachments
Sysprof 48.0 capture with MiniBrowser (7.08 MB, application/x-xz) 2025-04-19 09:18 PDT, Jeff Fortin	no flags	Details
Screenshot of Sysprof's flame graph (409.91 KB, image/png) 2025-04-19 09:20 PDT, Jeff Fortin	no flags	Details
Screenshot of Sysprof's marks (380.85 KB, image/png) 2025-04-19 09:21 PDT, Jeff Fortin	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Jeff Fortin

Comment 1 2025-04-19 09:20:35 PDT

Created attachment 474963 [details] Screenshot of Sysprof's flame graph

Jeff Fortin

Comment 2 2025-04-19 09:21:03 PDT

Created attachment 474964 [details] Screenshot of Sysprof's marks

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