1883669 - Memory Problem

Status: UNCONFIRMED

(Core :: Performance, defect)

Description

[Paul Grimmer]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0

Steps to reproduce:

I have been using Firefox for many years on many different PC's. I noticed that there is a memory problem in Firefox.. Open a bunch of tabs and look at the memory usage in Windows Task Manager. Close all of the tabs and exit Firefox. Re-open Firefox and you will find that the program's memory usage (Task Manager) is almost the same as it was with many tabs open even though only 1 is now open.

Actual results:

Memory usage remained very high even with only 1 tab open. It does not do this after a reboot so something is happening on a restart that causes Firefox to re-use the large amounts of memory it had before.

Expected results:

Memory usage should be very small like it is after a reboot and first opening.

Comment 1

[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 2

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

This bug was moved into the Performance component.

:paul, 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 3

[Olli Pettay [:smaug][[e-mail]]]

A profile created and shared using profiler.firefox.com would be good and also a memory report from about:memory.

Also, do you have any addons installed? Provide perhaps information from about:support