1192560 - Javascript functions works slow firefox after updating to Windows 10

Status: RESOLVED INCOMPLETE

(Core :: JavaScript Engine, defect)

Description

[Dominik Riedig]

User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:39.0) Gecko/20100101 Firefox/39.0
Build ID: 20150630154324

Steps to reproduce:

Open a random website that have javascript content.


Actual results:

Javascript works very slowly on Windows 10, sometimes some plugins or scripts are stopping.

Comment 1

[Jan de Mooij [:jandem]]

Dominik, can you give us more specific steps to reproduce this? On which websites do you see the problem? Do you get the "slow script dialog"? Thanks!

Comment 2

[Dominik Riedig]

(In reply to Jan de Mooij [:jandem] from comment #1)
> Dominik, can you give us more specific steps to reproduce this? On which
> websites do you see the problem? Do you get the "slow script dialog"? Thanks!

This problem is a global problem on all websites. Before the upgrade to Windows 10 all worked fine. I dont get the "slow script dialog", but sometimes the process of firefox.exe crashes.

Comment 3

[Dominik Riedig]

And the more javascript is implemented in the website, the slower firefox works. I.e. facebook.com or youtube.com with a lot of ajax-Replies and other jQuery functions.

Comment 4

[Jan de Mooij [:jandem]]

(In reply to Dominik Riedig from comment #2)
> This problem is a global problem on all websites. Before the upgrade to
> Windows 10 all worked fine. I dont get the "slow script dialog", but
> sometimes the process of firefox.exe crashes.

When it crashes, does it ask you to submit a crash report? Can you do that and then go to about:crashes, copy the link to the most recent report and paste it here?

Comment 5

[Dominik Riedig]

Unfortunately not. Only Windows is telling me that the process crashed and closes Firefox. Restarting Firefox dont let me send a crash report.

Comment 6

[Wayne Mery (:wsmwk)]

Please provide some testcase URLs.
Thanks

> Before the upgrade to Windows 10 all worked fine.
You updated from which version of Windows?