Closed Bug 1695298 Opened 5 years ago Closed 5 years ago

Page loading getting slow after a while (on macos)

Categories

(Core :: Networking, defect)

Product:
Core
Component:
Networking
Version:
Firefox 86
Type:
defect

Tracking

()

Status:
RESOLVED WORKSFORME

People

(Reporter: wojtek, Unassigned)

Details

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:86.0) Gecko/20100101 Firefox/86.0

Steps to reproduce:

Nothing particular that I know of.
It started about 3-6 weeks ago, but I thought it was a problem with my MBP.

Actual results:

For some reason Firefox starts to open the page veeeeryyy slowly (to a point where it times out) often taking minutes to get the response from the server.

Other browsers work just fine. Restarting Firefox brings the situation back to normal.

Vivalding operating normally while Firefox shows the problems:
https://files.unir.se/f/c90852e08b524bc395c2/

Firefox with the problem shown:
https://files.unir.se/f/db09bfe2d5cb42f7abf6/
https://files.unir.se/f/b419aee3c6594b988e88/

Firefox moments after the restart:
https://files.unir.se/f/ecc2cb747aff40d1a04b/

Expected results:

Firefox should keep working just fine…

The Bugbug bot thinks this bug should belong to the 'Core::Widget: Cocoa' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Component: Untriaged → Widget: Cocoa
Product: Firefox → Core

Could you upload a profile using profiler.firefox.com when the problem is happening?

Flags: needinfo?(wojtek)

Will do when it happens next time.

Flags: needinfo?(wojtek)

Opening main Firefox website (https://www.mozilla.org/en-US/firefox/new/): https://share.firefox.dev/3kwQQKa
Opening main Opera website (https://www.opera.com/): 48s:

I hope this will help.

(btw. is there a way to delete post-factum those profiler snapshots?)

After the restart https://www.opera.com/loaded in ~1s (finished in 3s)

Component: Widget: Cocoa → Performance
Summary: Page loading getting slow after a while (no macos) → Page loading getting slow after a while (on macos)

In the profile we're waiting for the socket thread for a long time. (click full view in the profiles)

Component: Performance → Networking

Can you make a http log:
https://developer.mozilla.org/en-US/docs/Mozilla/Debugging/HTTP_logging

The log may contain cookies and URL you are visiting (this are sensible information). I recommend using a new profile, not logging into sites and not visiting sites that reveal personal, sensitive information.

You can also send the log to me via email.

Flags: needinfo?(wojtek)

For a while now the issue is not manifesting itself. If it happens I'll share requested details.

Flags: needinfo?(wojtek)

Thanks for the report, wojtek. If it happens again please upload share the logs and reopen the bug.

Status: UNCONFIRMED → RESOLVED
Closed: 5 years ago
Resolution: --- → WORKSFORME
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