504974 - terrible load time on pages with much content

Status: RESOLVED DUPLICATE of bug 477564

(Firefox :: General, defect)

Description

[Tom van der Woerdt]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1) Gecko/20090624 Firefox/3.5 (.NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1) Gecko/20090624 Firefox/3.5 (.NET CLR 3.5.30729)

Firefox 3.5 hangs AFTER loading the page. Page loads fine, I can scroll a bit on the page, then it hangs for a long time, and then I can continue browsing. Zooming works fine and the page is also displayed just fine before the freeze, so I do not think this is a render issue.

Other browsers (IE 8, Chrome 3, Firefox 3.0.9) do not have this problem.

The page I mentioned is a normal page for the game I write for. In fact, they can get a lot longer.

Reproducible: Always

Steps to Reproduce:
1. go to http://www.evogame.org/temp.html
2.
3.

I have asked on irc.mozilla.org/#firefox, they can reproduce the problem.
Actual Results:  
The page hanged for about 30 seconds. After that, the page resumed smoothly.

Expected Results:  
Continue like normal

Comment 1

[Tom van der Woerdt]

about:buildconfig

Source

Built from http://hg.mozilla.org/releases/mozilla-1.9.1/rev/a625a31a0ad1
Build platform
target
i686-pc-mingw32

Build tools
Compiler 	Version 	Compiler flags
cl 	14.00.50727.762 	-TC -nologo -W3 -Gy -Fdgenerated.pdb -DNDEBUG -DTRIMMED -Zi -UDEBUG -DNDEBUG -GL -wd4624 -wd4952 -O1
cl 	14.00.50727.762 	-GR- -TP -nologo -Zc:wchar_t- -W3 -Gy -Fdgenerated.pdb -DNDEBUG -DTRIMMED -Zi -UDEBUG -DNDEBUG -GL -wd4624 -wd4952 -O1

Configure arguments
--enable-application=browser --enable-update-channel=release --enable-update-packaging --enable-jemalloc --enable-official-branding

Comment 2

[Tom van der Woerdt]

Ok, did some research. Removing all <input> elements (actually, I renamed them to <input2) and firefox works like a charm.

In other words: there's something that causes firefox to hang on a lot of input blocks.