1442654 - Firefox constantly producing CPU-load when reddit is in foreground

Status: RESOLVED DUPLICATE of bug 1443358

(Firefox :: Untriaged, defect)

Description

[u601173]

User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Firefox/60.0
Build ID: 20180302104326

Steps to reproduce:

It looks like CSS is the problem but it will affect every subreddit regardless of subreddit style or extension. As soon as I switch to a non-reddit tab the load disappears.

The CPU load on the i7-8700k is 3% or about 30% on one thread. OS is Windows 10 and I am using Firefox version 60 (32&64-bit).

I tried profiling it but I am not a web dev attaching it below

Comment 1

[u601173]

https://perf-html.io/from-addon/calltree/?hiddenThreads=&thread=0&threadOrder=0-1&v=2

Comment 2

[ovidiu boca[:Ovidiu]]

Thanks Hulmelo for capturing a performance profile, I've tried to open it but I can't.

Eric, can you please take a look at it and tell me if you can open it? Thanks

Comment 3

[ovidiu boca[:Ovidiu]]

Hi,
Marking this as Resolved: Incomplete due to the lack of response from u601173.
If the issue is still reproducible with the latest Firefox version, feel free to reopen the bug with more information.

Comment 4

[ovidiu boca[:Ovidiu]]

Sorry I didn't want to close this issue. I will reopen it, but I see that u601173 account is disabled, I don't know what should we do with this.

Comment 5

[Mike Conley (:mconley) (:⚙️)]

This _might_ be a dupe of bug 1443358.