2004895 - TrueNAS 25.10.x memory leak when dashboard is visible

Status: UNCONFIRMED

(Core :: Performance: Memory, defect)

Description

[matthias koplenig [:metasieben]]

This (probably mostly useless) profile was taken while the TrueNAS tab was using 48GB of memory.
[0] https://share.firefox.dev/48Mamw1

Since the update to TrueNAS 25.10 the dashboard has been consuming large amounts of memory.

[1] https://share.firefox.dev/4a4KUE5
This profile was taken on another server running 25.10 shortly after start-up, constantly using 90-100% CPU
and memory increasing. Maybe here the reason why it is leaking is "more" visible.

Comment 1

[matthias koplenig [:metasieben]]

Attachment: memory-report.json.gz

Comment 2

[matthias koplenig [:metasieben]]

Added memory report after some more minutes.

Comment 3

[Mayank Bansal]

1. Can you attach the contents of about:support
2. The profils only have the mainthred of the process visible. And that just shows lots of javacript activity. The memory report shows lots of duplicates of strings, so that may be the issue.
3. Is it possible to create a testcase, or give access to mozilla devs for some portal where they can repro this bug?
4. A shot in the dark: Does the memory increase occur if you set gfx.canvas.accelerated=False and restart the browser?

cc: sfink because "strings".

Comment 4

[matthias koplenig [:metasieben]]

Created a "full" profiler recording in a clean profile:
https://share.firefox.dev/4ptjDjD

Comment 5

[matthias koplenig [:metasieben]]

Attachment: about:support of "clean" profile