I think Firefox should contain a hang reporter (in addition to the crash reporter)

[A_Nonymous]

When Firefox crashes, the crash reporter allows you send a crash dump to Mozilla. I've noticed that a bunch of unconfirmed issues are cases where Firefox hangs or becomes wholly or partly unresponsive but the developers cannot reproduce the scenario. Firefox should come with a tool that the user could activate when Firefox hangs that would work similar to the crash reporter. Obviously it would have to be a separate executable, because depending on how much of the Firefox interface locks up it might be that there'd be no way to activate it otherwise. I suspect many mystifying issues could be resolved if only the developers had access to a dump file.

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.

[rjt69]

When Firefox slows down to a crawl, it would be nice to open another app to report the problem.  Hopefully, it can run at a better priority than Firefox itself. 

[TruthSeeker47]

Firefox on my MacBookPro running High Sierra 10.13.6 constantly  hangs, after 5 or 10 minutes of being on line,wont shut down with Force Quit. One fix I saw was to go to profiles and change name of file "places.sqlite " to "places.sqlite.old" but there is already a file with that name so the file name wont change. Any more suggestions?