707643 - 100% CPU usage and unresponsive script dialog pops up during page loading - www.eurogamer.net

Status: RESOLVED DUPLICATE of bug 710780

(Core :: JavaScript Engine, defect)

Description

[Alice0775 White]

Build Identifier:
http://hg.mozilla.org/mozilla-central/rev/c2102c45c8da
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0a1) Gecko/20111204 Firefox/11.0a1 ID:20111204031102

100% CPU usage and unresponsive script dialog pops up during page loading - www.eurogamer.net .

See forum( http://forums.mozillazine.org/viewtopic.php?p=11530307#p11530307 )

Reproducible: Always

Steps to Reproduce:
1 Start Firefox with clean profile
2 Open URL

Actual Results:
  100% CPU usage
  "Unresponsive script dialog" pops up

Expected Results:
  The page is displayed without "unresponsive script dialog"

Regression window(cahed m-c)
Works:
http://hg.mozilla.org/mozilla-central/rev/a68c96c1d8e0
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0a1) Gecko/20111203 Firefox/11.0a1 ID:20111203031117
Fails:
http://hg.mozilla.org/mozilla-central/rev/13afcd4c097c
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0a1) Gecko/20111203 Firefox/11.0a1 ID:20111203122618
Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=a68c96c1d8e0&tochange=13afcd4c097c

Regression window(jm nightly)
Works:
http://hg.mozilla.org/projects/jaegermonkey/rev/498d6fa378ba
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0a1) Gecko/20111020 Firefox/10.0a1 ID:20111020073958
http://hg.mozilla.org/projects/jaegermonkey/rev/1d1656b60947
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0a1) Gecko/20111021 Firefox/10.0a1 ID:20111021040331
Fails:
http://hg.mozilla.org/projects/jaegermonkey/rev/d849045ad3f2
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0a1) Gecko/20111022 Firefox/10.0a1 ID:20111022040331
Pushlog:
http://hg.mozilla.org/projects/jaegermonkey/pushloghtml?fromchange=1d1656b60947&tochange=d849045ad3f2

Comment 1

[Alice0775 White]

"Unresponsive script dialog" is as follows:

>A script on this page may be busy, or it may have stopped responding.
>You can stop the script now, or you can continue to see if the script will complete.
>
>Script: http://www.eurogamer.net/scripts/Eurogamer/jwplayer/jwplayer.js?v11.0.5.2:1

Comment 2

[David Mandelin [:dmandelin]]

I don't actually get the unresponsive script dialog, but I can tell the browser is unresponsive for a longer period of time than previous versions. 

According to Shark, about 60% of the time is in fun_getProperty. Brian, does that ring a bell wrt to removing getFunctionPrivate?

Comment 3

[Brian Hackett [Laid off!]]

This may be related to bug 710780 (logic bug in fun_getProperty).

Comment 4

[David Mandelin [:dmandelin]]

Alice, can you retest this now that bug 710780 is fixed? I'm not sure I can reproduce it locally, so it's hard for me to tell if it was fixed.

Comment 5

[Alice0775 White]

(In reply to David Mandelin from comment #4)
> Alice, can you retest this now that bug 710780 is fixed? I'm not sure I can
> reproduce it locally, so it's hard for me to tell if it was fixed.

I cannot reproduce problems of Bug 707643 and bug 710780 anymore.

So, I mark this as duplicate.

http://hg.mozilla.org/mozilla-central/rev/2afd7ae68e8b
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0a1) Gecko/20111220 Firefox/11.0a1 ID:20111220031159