1828075 - memory leak when opening 2 or more instances of firefox

Status: RESOLVED DUPLICATE of bug 1828587

(Core :: Performance, defect)

Description

[milan.rombouts23]

Attachment: memory-report.json.gz

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/112.0

Steps to reproduce:

opened a second instance of firefox which i then minimized

Actual results:

working set ram usage keeps increasing until second instance is closed or recombined with the first instance, about:performance and task manager do not show the usage

Expected results:

working set usage remains steady

Comment 1

[milan.rombouts23]

Attachment: Capture.PNG

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.

:milan.rombouts23, 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

[Andrew McCreight [:mccr8]]

This looks like it could be the same issue as bug 1828587.

The issue is reported against 112, and I see ver high render-texture-hosts in the GPU process:
9,190.08 MB (49.57%) ── render-texture-hosts
Also this:
8,992.97 MB (48.51%) ── image(640x360, compositor_ref:2, creator_ref:1)/decoded-nonheap

It has has lots of shmem in the main process:
9,002.20 MB ── shmem-allocated
9,002.20 MB ── shmem-mapped

GPU process has the high shmem-mapped, but not the shmem-allocated.

Comment 5

[Andrew McCreight [:mccr8]]

Do you have multiple monitors? That's been an issue for some of the similar reports we've had.

Comment 6

[Andrew McCreight [:mccr8]]

Could you attach your about:support? You'll want to do "copy raw data to clipboard", paste that into a file and attach it here. Thanks.

Comment 7

[milan.rombouts23]

Attachment: aboutSupport.json

Comment 8

[milan.rombouts23]

i do indeed have multiple monitors. As mentioned in bug 1828587 it is possible the problem lies with the dark space theme, disabling it has made the runaway memory increase halt.

Comment 9

[Andrew McCreight [:mccr8]]

Thanks for the update.