1842915 - Firefox wastes 25 seconds before startup

Status: RESOLVED WORKSFORME

(Core :: Performance: General, defect)

Description

[atmjahidhasan]

Attachment: Firefox_profile_in_safemode.json.gz

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/116.0

Steps to reproduce:

I tried to open Firefox (with all the extensions and in safe mode).

Actual results:

Firefox opened 25 seconds after I issued the command.

Profiles:

1. With extensions: https://share.firefox.dev/3riMPQZ
2. In safe mode: https://share.firefox.dev/3OadE31

Expected results:

Firefox shouldn't have waited ~25 seconds to start fully. The bootup should have been faster.

Comment 1

[Ina Popescu, Desktop QA]

Setting the component for now to have the developer's opinion about it.
If this is not the correct component, please feel free to change it to a more appropriate one.

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

This bug was moved into the Performance component.

:atmjahidhasan, 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:memory and 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.

Comment 3

[atmjahidhasan]

I think I figured the problem out. The problem was with the xdg desktop portal. Apparently, there is a DBus proxy timeout (25 seconds) for getting the system theme. I uninstalled the xdg desktop portal programs from my device. Firefox now boots up almost instantly.

Comment 4

[Ina Popescu, Desktop QA]

Thank you for letting us know that everything is back to normal on your side.
Closing as WORKSFORME.