1914510 - Firefox on Windows consuming twice as much RAM as Chromium

Status: UNCONFIRMED

(Core :: Performance, defect)

Description

[Rodrigo Souza]

Attachment: memory-report.json.gz

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:129.0) Gecko/20100101 Firefox/129.0

Steps to reproduce:

With the same extensions installed, open a video on YouTube (with the same quality), a news website (https://tecnoblog.net/) and Notion (https://www.notion.so).

Then repeat the test in Edge or Chrome.

Actual results:

Is crazy as (on my laptop) as RAM is consumed much more using Firefox, and the fan is much stronger.

Firefox on Windows for me always consumes at least twice as much RAM and CPU when compared to Chrome or Edge.

Expected results:

Same RAM, CPU and battery consumption as any other Chromium.

I always try to go back to Firefox, but I can never keep it as default for more than 1 week, unfortunately.

Comment 1

[Rodrigo Souza]

Attachment: My about:support info

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Performance' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

This bug was moved into the Performance component.

:rodrigo.souza32, 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.

Comment 4

[Rodrigo Souza]

Attachment: raw

Comment 5

[Rodrigo Souza]

Attachment: Firefox 2024-08-27 00.56 profile.json.gz

Comment 6

[Frank Doty [:fdoty]]

Removing perf impact flag and adding to memory investigation meta bu - please continue to provide additional details to help us remedy any possible issues

Comment 7

[Bas Schouten (:bas.schouten)]

Web Skype appears to be using most of the memory here in the memory report, but it is not reported in comment 1. Could you be logged in here somehow but not in Chrome?