1498845 - Regression: Content processes become "Not Responding" in Activity Monitor

Status: RESOLVED WORKSFORME

(Firefox :: Untriaged, defect, P1)

Description

[jiri.pospisil]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:60.0) Gecko/20100101 Firefox/60.0

Steps to reproduce:

Start the latest Nightly (64.0a1 (2018-10-13) (64-bit)) on macOS 10.14


Actual results:

After a few minutes, every content process becomes "Not responding" in Activity Monitor. The browser seems to work fine though.

Activity monitor: https://i.imgur.com/tXEIdaF.png
A sample of one the "Not responding" processes: https://gist.github.com/jiripospisil/c8312c73f4173064ada2c48d4ffdf68a
about:support: https://gist.github.com/jiripospisil/324015fab7333abd2a81b82742a990a9


Expected results:

The processes should not be marked as "Not responding".

Comment 1

[Daniel Bodea [:danibodea]]

I could reproduce this issue on a Nightly build from 2018-10-13, but I could not reproduce it on Nightly from 2018-10-16.

jiri.pospisil, can you check if the issue still reproduces on your system on the latest Nightly build?

Comment 2

[jiri.pospisil]

Everything looks fine now even after a few hours on 64.0a1 (2018-10-16) (64-bit).

https://i.imgur.com/RPxhAUQ.png

Comment 3

[Daniel Bodea [:danibodea]]

I will mark this issue as RESOLVED, WORKSFORME. 
Thank you for your contribution!