1421386 - Huge memory usage with latest update

Status: RESOLVED DUPLICATE of bug 1418326

(Core :: General, defect)

Description

[Jorge Limas]

Attachment: memory-report.json.gz

User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:58.0) Gecko/20100101 Firefox/58.0
Build ID: 20171127135700

Steps to reproduce:

Opening firefox with 4 tabs is using over 4 GB of ram and keeps increasing, the CPU is also working 50% constantly. Attached is the memory report.

Comment 1

[Ben Kelly [:bkelly, not reviewing]]

Looks like ads on reddit are going a bit crazy.  This could be related to the a11y issues, though.

Jorge, can you try the following:

1. Open Menu->Options
2. Search for "access"
3. Click the checkbox next to "prevent accessibility"
4. restart firefox

Does memory usage or performance improve at all?

Comment 2

[Jorge Limas]

Just did the change to the setting, as it was unchecked. Checked now and testing, seems to be staying stable as it started to spike up as soon as I opened the Firefox explorer and started using some tabs.

Quick question, am I missing something by checking this option? or is just a work around while something else is being solved?

Comment 3

[Ben Kelly [:bkelly, not reviewing]]

We've been having some unusual performance problems due to some external applications on windows attaching to firefox via the accessibility APIs.  Preventing this is a short term work around while we investigate.

Please try it for a day or so and let us know if it helps over a longer time period.  Thanks!

Comment 4

[Jorge Limas]

Attachment: Task Manager Picture

Comment 5

[Jorge Limas]

I'm still seeing high CPU and RAM usage after steps above, I also attached a task manager picture with the information.

Comment 6

[Ben Kelly [:bkelly, not reviewing]]

We've had other reports of ads leaking on reddit.  Duping to that bug.

To work around you can try turning on tracking protection in Menu->Options.