1644097 - Super slow restore of tabs doing update

Status: NEW

(Firefox :: Session Restore, defect, P4)

Description

[Henrik Gemal]

I'm using the nightly build of Firefox and every time I update my tabs are super slow at loading. I click on them and they just seem to keep loading and loading.
After around 5-10 minutes the normally load

Is there a way for me to debug what is going on since I can reproduce this on all updates.

Comment 1

[Mike de Boer [:mikedeboer]]

Hi Henrik! Well, what you could do to help is to use the Firefox Profiler to start capturing profiles and the docs describe how you can start the profiler early on startup.

Does Firefox stay responsive whilst it's restoring or is it completely frozen the whole time?

Comment 2

[Henrik Gemal]

it is still responsive. it doesn't happen if I just restart firefox, only on updates

Comment 3

[Henrik Gemal]

I now have a profile json file, but I'm not sure I want to publish it here. Not 100% sure what it contain of sensitive information.
Should I send it directly or?

Comment 4

[Henrik Gemal]

Attachment: This is what the tabs look like when I press them

Comment 5

[Henrik Gemal]

I have 550 fonts in the Windows fonts folder. That is 380Mb
Could that be a factor?
Any way I can detect if this is the issue?

Comment 6

[Henrik Gemal]

It's a not a problem on normal restarts. ONLY when there is an update.
I can restart when there NOT an update and the tabs are back right away.
But when there is a restart it takes like 5-10 minutes for the tabs to be fully back.

Comment 7

[Wayne Mery (:wsmwk)]

Henrik, do this still reproduce for you?

Comment 8

[BugBot [:suhaib / :marco]]

Redirect a needinfo that is pending on an inactive user to the triage owner.
:dao, since the bug has recent activity, could you have a look please?

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