386944 - [DHTML] Speed issue with DHTML based Javascript (Productivity in different versions)

Status: RESOLVED WORKSFORME

(Core :: Layout, defect, P4)

Description

[vflash]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; ru; rv:1.8.1.4) Gecko/20070515 Firefox/2.0.0.4
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; ru; rv:1.8.1.4) Gecko/20070515 Firefox/2.0.0.4

http://vflash.ru/files/tscroll/test_01.html
test: speed Firefox3 < Firefox2

простите за мой английский подругому немогу

Reproducible: Always

Steps to Reproduce:
1.
2.
3.

Comment 1

[:Gavin Sharp [email: [e-mail]]]

There isn't enough information in this bug report for it to be useful. The testcase seems to be just writing out a DIV repeatedly by setting innerHTML, and there are existing performance bugs on that. There's no evidence that this is a security issue.

Comment 2

[Martijn Wargers (dead)]

Attachment: modified testcase that measures time it takes

Comment 3

[Martijn Wargers (dead)]

On trunk, I get  appr. 11500ms, while on branch I get 4500ms.
Reopening bug, I agree this might very well turn out to be a duplicate, but it isn't incomplete.

Comment 4

[Marius Strumyla]

See bug 386802. Martijn, were you using the trunk build with the fix for bug 386802?

Comment 5

[Martijn Wargers (dead)]

It still takes appr. 11500 ms with 2007-07-06 trunk build (which is after the fix from bug 386802).

Comment 6

[Marius Strumyla]

I've tried narrowing down the regression range. On Win2k, going from trunk build 2007-04-30 to 2007-05-01 times jump from ~12400 to ~23500 ms.

Here's a bonsai query:
http://bonsai.mozilla.org/cvsquery.cgi?treeid=default&module=all&branch=HEAD&branchtype=match&dir=&file=&filetype=match&who=&whotype=match&sortby=Date&hours=2&date=explicit&mindate=2007-04-30+5%3A00&maxdate=2007-05-01+6%3A00&cvsroot=%2Fcvsroot

Comment 7

[Marius Strumyla]

I think this is a regression from bug 368247. 

Just removing these border styles from "#bodyScroll .row" class, the time drops to 18000 ms.

	border-right-width: 1px;
	border-right-style: solid;
	border-right-color: #000000;
	border-bottom-width: 1px;
	border-bottom-style: solid;
	border-bottom-color: #999999;

Comment 8

[Martijn Wargers (dead)]

Ok, thanks for finding out, Marius.
I think there is enough info to confirm this bug.

Comment 9

[David Bruant]

Test case takes about 4,3s on both Chrome and FF. Perf improved a lot over the last 5 years :-)