141572 - Large table with many forms eats CPU / takes too long to load

Status: RESOLVED WORKSFORME

(Core :: Layout, defect, P1)

Description

[WD]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.0+)
Gecko/20020501
BuildID:    2002050104

The page http://dormcam.mine.nu:8080/largetable.html
has a large table with each row containing an HTML form.  Mozilla takes way too
long to render the page.

Reproducible: Always
Steps to Reproduce:
1.Go to http://dormcam.mine.nu:8080/largetable.html
2.look at your CPU monitor
3.look at your watch

Actual Results:  Page takes over 15 seconds to render on an 800MHz machine

Expected Results:  1 second or less

IE takes approx. 1 second to render the page.
Netscape 4.x takes 2-3 seconds.
Reloading or viewing page source with Mozilla also takes over 15 seonds.

Comment 1

[Matthias Versen [:Matti]]

-> Layout (or Tables ?)

Comment 2

[Laura Krietemeyer]

Changing QA Contact

Comment 3

[Carine Held]

Get a Connection was refused by server error message when I try to access the URL.

Comment 4

[WD]

Attachment: Testcase

Sorry...   The URL for this bug is no longer valid.  Use this instead.

Comment 5

[WD]

Try saving the file locally to eliminate any delay caused by loading the page
over the network.    Compare Mozilla's rendering time with that of IE.
Even on an Athlon XP 1800, IE is quite noticeably faster.

Comment 6

[Carine Held]

Reproduced in 1.08.03 branch build, Win XP, with a 728MHz machine. Using the
testcase, page takes about 10 secs to load and CPU load is 100% during that time.

Comment 7

[Andrew Schultz]

see bug 148338 for huge tables (50,000 rows) and bug 148636 for lots of form
controls

Comment 8

[brewthatistrue]

seeing same behavior on Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.6)
Gecko/20040206 Firefox/0.8
about 4 seconds (with 100% cpu usage) with athlon XP 1800mhz

Comment 9

[Samuel Sidler (old account; do not CC)]

This loads almost immediately for me and has no perf hit using Firefox 2.0.0.3. WFM?