1897637 - Firefox consumes 65 GB RAM

Status: RESOLVED INCOMPLETE

(Core :: Performance: General, defect)

Description

[night4fever]

Attachment: memory-report.json.gz

Steps to reproduce:

Its not easily reproduceable because it varries with time.
(situation similar i believe to: https://bugzilla.mozilla.org/show_bug.cgi?id=1675459)
If i open Firefox open a few tabs (google search especially is a common culprit) and then leave it for a few days it continues to gobble up ram. If i restart with the same tabs open on re-open then everything goes to normal for a while.

I have also kept the GC and CC logs if those could help. Dont know how to transfer them (About 100 GB)

I considered that it could be an addons problem so i tried on a different laptop with just UBlock Origin Ghostery bitwarden and AdGuard (which i consider essential nowadays) but the result was the same. (16GBs were used there cause of that laptop limitations).

Actual results:

Firefox through the span of a few days grew to consume more than 65GB with 11 tabs opened. Had to close two to get out of swap but i believe enough information is still kept in the logs.

Expected results:

The ram usage should have stayed relatively constant.

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.

:night4fever, 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

[night4fever]

Attachment: ff_rawdata.txt

raw data added as requested. Since its not a slowness or high CPU usage issue is the profiler needed?

Comment 4

[Bas Schouten (:bas.schouten)]

It looks like the memory report you sent us is anonymized. Is there any chance you would be able to send us a non anonymized memory report? We can provide instructions for sharing privately.

Comment 5

[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 6

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

A needinfo is requested from the reporter, however, the reporter is inactive on Bugzilla. Given that the bug is still UNCONFIRMED, closing the bug as incomplete.

For more information, please visit BugBot documentation.