1426248 - Memory leak on slack.com

Status: RESOLVED INCOMPLETE

(Core :: General, defect)

Description

[nnidyu]

Attachment: memory-report.json.gz

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:59.0) Gecko/20100101 Firefox/59.0
Build ID: 20171219100203

Steps to reproduce:

Keeping [mydomain.]slack.com opened for few hours.


Actual results:

Memory usage (resident) of the main process goes to few GBs – nearly 40% of my RAM. This does not happen with the same browser usage when I do not have my team's Slack page opened.
Memory usage is not reduced after clicking "Minimize memory usage" in about:memory.


Expected results:

Slack.com should not cause high memory usage or at least it should go down after closing its tab.

Comment 1

[Eric Rahm [:erahm]]

Heap unclassified is super high.

> 1,191.36 MB (100.0%) -- explicit
> ├────842.49 MB (70.72%) ── heap-unclassified

It looks like you have quite a few extensions, is it possible to test in safe mode to see if you can reproduce? Also can you get us a list of extensions from about:support?

Comment 2

[Eric Rahm [:erahm]]

Closing for now, please feel free to reopen if you get a chance respond to comment 1.