610274 - FF4: stuck editing Google docs and unresponsive script

Status: RESOLVED WORKSFORME

(Core :: JavaScript Engine, defect)

Description

[Alex]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101107 Firefox/4.0b8pre
Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101107 Firefox/4.0b8pre

Firefox 4 gets stuck when editing Google documents.
Firefox 4 may get stuck when having Google documents open.

Reproducible: Always

Steps to Reproduce:
1. Create new Google Docs Document (The button next to "Upload...")
2. Find 50 pages of text (anything will do)
3. Past that into that Google Docs Document
Actual Results:  
Firefox gets stuck. After some time it generates an unresponsive script error. Clicking continue will keep giving you unresponsive script errors.

Expected Results:  
Code is quickly pasted into the Google document without any unresponsive script errors.

Firefox may simply get stuck when having a google document open - it will keep generating unresponsive script errors.

The only thing to do is to kill off firefox.exe

Comment 1

[(no longer active)]

This needs help from the QA folks to reproduce, but from comment 0 this shouldn't be editor related.

Comment 2

[Matthias Versen [:Matti]]

>After some time it generates an unresponsive script error.
Which script (that is part of the error message) ?

Does it make a difference if you run Firefox in the Firefox safemode ?
http://support.mozilla.com/en-US/kb/Safe+Mode

Comment 3

[Alex]

Just got this in safe mode,
Script: https://docs.google.com/document/static/client/js/1272143008-kix_main_i18n_kix_core.js:20

The larger the document the more such errors you are going to get. 

This is not the only one that happens. I did manage to paste the text and get the document to save itself this time (it took pressing continue a few times).

Firefox generates unresponsive script errors when,
1. Document auto-saves itself.
2. I delete large chunk of text.
3. I past a large chunk of text.

By large I mean 258k chars (136 pages of XML).

Comment 4

[Wayne Mery (:wsmwk)]

#2+3 (large XML) sounds like duplicate.  

but, can you reproduce this with current firefox 4.0 beta?

Comment 5

[(mostly gone) XtC4UaLL [:xtc4uall]]

I can repro the Pasting Case on Beta 11, but it's WFM (i.e. no Slow Script Warning + almost on par Speed comparing to Google Chrome 11.0.672.0) on http://hg.mozilla.org/mozilla-central/rev/1da3405c74fd & http://hg.mozilla.org/tracemonkey/rev/a8926981d452.

However, on http://hg.mozilla.org/tracemonkey/rev/a8926981d452 (and the MC Build) I get a Slow Script Warning when undoing the Paste using Google Docs built-in Edit Menuitem:

Script: https://docs.google.com/static/document/client/js/249076835-v2-kix_main_i18n_kix_core.js:215

If I choose "Do not ask again" in the Dialog and let the Script continue, it takes Minutes before Undo-Action, whereas in Chrome it's Seconds (like in the Paste Case).

No Idea if it's useful to attach a WinDGB Log in these Cases of Bugs since every Break results in a different Stacktrace (JS/GC Land everytime though).

Comment 6

[Shannon Lindsay]

I am a newby, and don't understand everything here, but I am willing to try anything!!!
Been working on a fix for my disabled javascript, even though googling every question I can possibly think of to fix the problem...following instructions to a 'T', says enabled...even added exceptions to be allowed for my website.  Still nothing is working.
After viewing the form I just filled out...must not be doing it correctly, but I am running firefox 4, on a vista...And my vote is that it is in extremely 'High Importance"!!!
After working on this fix for a month...I greatly need help!!!
Thank you so much!!!!

Comment 7

[Alex]

This still happens (the script errors)
I opened the Untitled Document with 258k chars.

A few observations, 
Firefox 8.0a memory usage: 400MB
Firefox does not idle, 8-16% CPU
30-40% CPU when memory is bloating up to ~400MB range
20-30% CPU simple moving cursor around the page (no clicks or anything!)
Closing the tab made the memory go to ~460 then drop to ~215 (2 tabs left)
After reloading Firefox with the 2 tabs (google docs - Homapage && 610274),
Firefox memory usage is ~98MB.

Chrome 12 memory usage: ~160MB
Chrome also takes forever to CTRL-X, 
but no unresponcive script errors
and other tabs work just fine.
It took about ~5 minutes to CTRL-X though.

Comment 8

[jds2501]

Confirmed the unresponsive script errors on pasting large portions of text (~100 pages) into a google doc. Eventually after a few minutes, the text will be pasted, and Firefox will no longer be hung.

Confirmed the hang as well when deleting large portions of text (~100 pages) from a google doc. Firefox has been hung for more than 15 minutes as of right now. Firefox process details:

CPU Usage: ~50%
Memory: 977,812 KB

Comment 9

[jds2501]

Build Information:

Mozilla/5.0 (Windows NT 6.1; rv:9.0a1) Gecko/20110902 Firefox/9.0a1

Comment 10

[Wayne Mery (:wsmwk)]

potentially more helpful if reproduced using nightly ftp://ftp.mozilla.org/pub/firefox/nightly/latest-trunk/

Comment 11

[Matthias Versen [:Matti]]

Is this till an issue ?

Comment 12

[Bogdan Maris, Desktop Test Engineering]

Mozilla/5.0 (Windows NT 5.1; rv:26.0) Gecko/20100101 Firefox/26.0

This is no longer a issue on latest Nightly (buildID: 20130808030205).