Latest Update has destroyed performance
Categories
(Core :: Performance, defect)
Tracking
()
People
(Reporter: nwa, Unassigned)
Details
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:127.0) Gecko/20100101 Firefox/127.0
Steps to reproduce:
Updated Firefox
Actual results:
Since update the browser takes minutes to startup, pages take ages to load, clicking on some tab causes the browser to freeze
Expected results:
The code shouldn't hang like this
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Updated•2 months ago
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Comment 1•2 months ago
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This bug was moved into the Performance component.
:nwa, could you make sure the following information is on this bug?
- For slowness or high CPU usage, capture a profile with http://profiler.firefox.com/, upload it and share the link here.
- For memory usage issues, capture a memory dump from
about:memoryand attach it to this bug. - Troubleshooting information: Go to
about:support, click "Copy raw data to clipboard", paste it into a file, save it, and attach the file here.
If the requested information is already in the bug, please confirm it is recent.
Thank you.
This might have been a red herring. Not positive but my initial impression is that our corporate security software (one of many but likely CrowdStrike) didn't like something about the update.
My description above is accurate: Immediately post update browser restart, performance went straight to crap barely even being able to interact with the browser like just clicking on a tab could take minutes to respond.. closing a tab (attempting to see if it was a nefarious recent tab) caused the browser to completely freeze up. In Windows Taskman many many Firefox processes were starting up (like dozens when I only had 11 tabs open). I reported this via Chrome because I couldn't interact enough with Firefox to do so. I restarted Firefox numerous times to try and get past this each of which required a Process Kill as the 'X' was non-responsive.
As this unfolded I started to notice other applications slow down.. not nearly as dramatically but noticeable. The only process in Windows showing meaningful resource usage was CrowdStrike (like 5-6% CPU) with Firefox being just below that. At this point I decided to reboot my machine:
Problem solved? Now everything is responsive again. As I'm typing this in FF it's smooth and nothing on my machine is using even 1% of the CPU.
Additional information: The last tab I had opened right after restarting Firefox was CNN which as with most news sites these days has a ridiculous amount of popup ads, etc.. heck it's even possible they've been compromised although I'd think that would be big enough to be in other news. After finally being able to get enough responsiveness to open the Firefox Task Manager I killed a TON of processes and did close the CNN tab among a few others.. long story short something about that page could have had an impact although almost in parallel I also CTRL-clicked a different link in Facebook immediately after (internal FB link to a Group) that never opened so Facebook could be to blame as well (Their software keeps getting worse..).. Really unclear..
Longer story short I can gather additional info as requested above but as mentioned post my machine reboot Firefox's performance has been restored so not sure if my current happily running system will yield much fruit?
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Comment 3•2 months ago
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Happy to hear the issue is resolved.
Please feel free to re-open the bug if you see the issue return. As you said there probably isn't much diagnostic work we can do while things are all good!
Description
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