735960 - Firefox main thread freezing periodically, locking up the entire browser.

Status: RESOLVED INCOMPLETE

(Core Graveyard :: Plug-ins, defect)

Description

[Peter Bright]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0) Gecko/20100101 Firefox/11.0
Build ID: 20120312181643

Steps to reproduce:

Here's a video demonstrating the problem:
http://www.youtube.com/watch?v=mREC7FcirHE&feature=youtu.be



Actual results:

Notice how the main thread hangs a couple of times, stopping everything from working.


Expected results:

Obviously the entire browser isn't supposed to lock up several times per minute.

Comment 1

[Peter Bright]

Note that the use of YouTube is to make it particularly obvious that there's a problem since the video freezes. It's not a problem restricted to YouTube.

Comment 2

[David Dahl :ddahl]

An observation:

You have many tabs open in Firefox and several visible extensions loaded, as well as an animated toolbar icon (i think).

Can you do this same test with a fresh, new Firefox profile? ( http://support.mozilla.org/en-US/kb/Managing-profiles?redirectlocale=en-US&redirectslug=Managing+profiles#w_starting-the-profile-manager )

That, for one thing would allow you to compare apples to apples (a bit more anyway).

Comment 3

[Benjamin Smedberg]

Resolving old bugs which are likely not relevant any more, since NPAPI plugins are deprecated.