Open Bug 1922886 Opened 2 months ago Updated 2 months ago

Firefox very slow on Windows ARM!

Categories

(Core :: Performance, defect)

Product:
Core
Component:
Performance
Version:
Firefox 132
Type:
defect

Tracking

()

Status:
UNCONFIRMED

People

(Reporter: m.ernst, Unassigned, NeedInfo)

Details

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:132.0) Gecko/20100101 Firefox/132.0

Steps to reproduce:

Update FF to the latest version on a Windows ARM PC.

Actual results:

Firefox has become very bad on Windows ARM PC (Adreno 685 GPU)! After some display problems under version 127 (https://bugzilla.mozilla.org/show_bug.cgi?id=1898164) it got better for a short time: the graphics errors disappeared. BUT: in the meantime the FF under ARM is terribly slow! Not only the websites. Even the startup takes 3x as long as Chrome...in general: the whole handling is very slow. Have you probably simply (partially) deactivated HW acceleration?
FF is currently unusable under ARM!

Does it happen also on a clean Firefox profile?
https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems#w_start-firefox-in-troubleshoot-mode

Component: Untriaged → Performance
Product: Firefox → Core
  1. Please type "about:support" in your browser, and copy-paste its output here
  2. Please capture a profile when you experience the slow issue. See the guide here: https://profiler.firefox.com/ , https://profiler.firefox.com/docs/#/ . Please use the "Graphics" preset when capturing the profile.
Flags: needinfo?(m.ernst)

Is this using the Firefox ARM build (https://www.mozilla.org/en-US/firefox/all/desktop-release/win64-aarch64/) or using the x86 build of Firefox?

This bug was moved into the Performance component.

:m.ernst, could you make sure the following information is on this bug?

  • For slowness or high CPU usage, capture a profile with http://profiler.firefox.com/, upload it and share the link here.
  • For memory usage issues, capture a memory dump from about:memory and attach it to this bug.
  • Troubleshooting information: Go to about:support, click "Copy raw data to clipboard", paste it into a file, save it, and attach the file here.

If the requested information is already in the bug, please confirm it is recent.

Thank you.

Flags: needinfo?(m.ernst)
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