44312 - A <select> with many options is slow drawing the drop-down

Status: VERIFIED DUPLICATE of bug 32920

(Core :: Layout: Form Controls, defect, P3)

Description

[jmraker]

With the linux 2000062920 nightly build.

Actual Results:
Clicking on the select widget's arrow at
http://www.mwaccess.net/~john/tc/tc21.html to open the pull down menu has a
noticable delay before the widget is drawn.

Expected Results:
It should be faster.

Comment 1

[John Dobbins]

tested with build 2000063008 on Redhat 6.2
PII 400 192 M ram
widget takes about 1 second to draw after click, may be more noticible on slower
PC.

Comment 2

[cheng]

takes about 2 sec on my PII 300, RH 6.2.  Also changing severity to minor since
it is working, just a bit slower than we would like to see.

Comment 3

[rods (gone)]

Marking as Future, yes 1000 items is probably too slow, but is it really 
practical?


This bug has been marked "future" because the original netscape engineer working 
on this is over-burdened. If you feel this is an error, that you or another 
known resource will be working on this bug,or if it blocks your work in some way 
-- please attach your concern to the bug for reconsideration. 

Comment 4

[Blake Ross]

I notice more delay than usual in selects with even just a few options.

Comment 5

[Jan Varga [:janv]]

clicking on <menulist> with 200 <menuitems> takes 3s to display popup
tested on todays linux build, K6-2 350 128 MB RAM

I think 200 items is not too much.
Can someone point me where I can start finding the performance bottleneck?

Comment 6

[Jan Varga [:janv]]

Previous comments should go to separate bug probably.
Anyway I'm attaching ouput from jprof which should describe slow
responce when clicking on long menupopup

Comment 7

[Jan Varga [:janv]]

Attachment: jprof output

Comment 8

[Jan Varga [:janv]]

and I forgot to mention that menuitems are created from RDF/XML datasource

Comment 9

[bsharma]

Updating QA contact.

Comment 10

[jmraker]

I think this was a duplicate of 32920 which was fixed.  I no longer have a 
problem with the testcase.

*** This bug has been marked as a duplicate of 32920 ***

Comment 11

[:deanis74]

verified dupe