[Bug 1856624] Re: Firefox freezes temporarily at 100% CPU when Chromium is opened

[ais523]

I have a total of 8 GB of RAM and 2 GB of swap.

Reproducing the issue with a memory monitor opened, however, showed that
the issue was not related to memory exhaustion: I had at least 2 GB of
unused RAM at all times, and although the swap was enabled, it was not
used (the swap usage remained at 0 throughout the entire period).

Also observed during this test: eight Firefox processes (seven Web
Content and one WebExtensions) were running at 50% CPU usage each
throughout the time of nonresponsiveness (my computer has 4 cores, so
between them they were using up the entire CPU usage of the computer).

** Changed in: firefox (Ubuntu)
       Status: Incomplete => New

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Title:
  Firefox freezes temporarily at 100% CPU when Chromium is opened

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