Refreshing Youtube Subscriptions page freezes browser's UI
Categories
(Firefox :: Session Restore, defect)
Tracking
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| Performance Impact | ? |
People
(Reporter: tomek-kubel2, Unassigned)
Details
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:101.0) Gecko/20100101 Firefox/101.0
Steps to reproduce:
Refreshed Youtube Subscriptions (https://www.youtube.com/feed/subscriptions) page
Actual results:
After ~1sec, whole browser's UI froze for 8secs. This started happening recently ( 1-2 weeks ago). Link to recorded profile: https://share.firefox.dev/3QH6NNL
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Updated•1 year ago
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Comment 1•1 year ago
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I can't manage to reproduce the issue on my end.
Is the issue only reproducible on that specific url?
Could you please try if the issue occurs in safe mode. Here is a link that can help you do that:
https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode
Thanks.
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Reporter | |
Comment 2•1 year ago
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Just tested, issue also occurs in safe mode.
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Comment 3•1 year ago
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The time is spent in session store code, and a large percentage of it is spent in serializeCSP and serializePrincipal. https://share.firefox.dev/3HZn78G
How many windows and tabs do you have open, roughly?
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Reporter | |
Comment 4•1 year ago
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1 window, 246 tabs
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Comment 5•1 year ago
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Thanks. We definitely shouldn't spend 4.4 seconds of CPU time to churn through 246 tabs, that's 17ms per tab!
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Comment 6•1 year ago
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The severity field is not set for this bug.
:dao, could you have a look please?
For more information, please visit auto_nag documentation.
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Reporter | |
Comment 7•11 months ago
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I don't remember exact timeline, but some time after reporting this issue, the lag didn't happen immediately but after a delay of ~10s (so: refreshing > 10 seconds of nothing > 8 seconds of non-responsiveness). And few weeks ago, the issue stopped, no lag anymore. Should this ticket get closed now?
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Comment 8•11 months ago
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Thanks for the update. Closing
Description
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