332558 - Ridiculous slow render

Status: RESOLVED INCOMPLETE

(Core :: Layout, defect)

Description

[MrNaz]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.1) Gecko/20060111 Firefox/1.5.0.1
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.1) Gecko/20060111 Firefox/1.5.0.1

Firefox takes a damn log time to render this page. It is 3MB of XHTML strict, but I use Apache 2.0.55 with mod_deflate to send the data as gzipped data. Here are the response headers:

Content-Encoding: gzip
Content-Length: 45459

As you can see, it compresses down to under 46kb transferred. IE and Opera both render the page quickly, and it even takes ages in Firefox when I have copied the page to the local HDD. When you load the URL I have indicated, it is not processing time on the server that you are waiting for, as has been suggested to me, as you are looking at sterile HTML that has been dumped as source from a dynamic application. There is no server side processing going on to slow it down.

Reproducible: Always

Steps to Reproduce:
1. Go to http://www.mrnaz.com/ffbug/bigform.html
2. Say OMG!!! LOLZ!!~! when you see how long it takes to load.

Actual Results:  
Waiting, waiting and more waiting.

Expected Results:  
Render the page as fast, or faster than IE, Opera and Konq.

This has happened with all versions of FF that I have tested, up to 1.5.0.1 and on all platforms.

Comment 1

[Ria Klaassen (not reading all bugmail)]

Opera: 18 seconds
IE: 33 seconds
Firefox trunk: 83 seconds

Comment 2

[Bengt-Erik Soderstrom]

Isn't this page a bit extreme? On my 500 MHz PIII machine running Linux, Opera takes 55 seconds. That is also a long long time to wait.
OK, my Seamonkey takes about 185 seconds, you you have made your point.

Comment 3

[Justin Kerk]

See also the various dependencies of bug 56854

Comment 4

[Bengt-Erik Soderstrom]

(In reply to comment #2)
> Isn't this page a bit extreme? On my 500 MHz PIII machine running Linux, Opera
> takes 55 seconds. That is also a long long time to wait.
> OK, my Seamonkey takes about 185 seconds,  you have made your point.
> 

And Konqueror on the same machine about 50 seconds....a tad quicker than Opera, actually...:-)

Comment 5

[Boris Zbarsky [:bzbarsky]]

I see about 20-30% of total time spent talking to X (on Linux).  The rest has the typical "large page" look to it.

Comment 6

[Wayne Mery (:wsmwk)]

test URL is gone