705361 - listing ftp with many files is slow

Status: RESOLVED DUPLICATE of bug 705174

(Core :: DOM: Core & HTML, defect)

Description

[Andrew G]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:9.0) Gecko/20100101 Firefox/9.0
Build ID: 20111116091359

Steps to reproduce:

1. Open ftp://ftp.byfly.by/pub/savannah.gnu.org/
Quick move mouse.



Actual results:

CPU usage 60-80%

Comment 1

[Alice0775 White]

Workaround: append the following to userContent.css

tbody > tr:hover {
  outline: none !important;
}

Comment 2

[Alice0775 White]

Confirmed on
http://hg.mozilla.org/mozilla-central/rev/84117219ded0
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0a1) Gecko/20111125 Firefox/11.0a1 ID:20111125031016
And Aurora10.0a2 and 9.0beta

Comment 3

[Josh Matthews [:jdm]]

Confirmed on OSX nightly.

Comment 4

[Alice0775 White]

maybe duplication of Bug 705174

Comment 5

[Olli Pettay [:smaug][[e-mail]]]

Is this a regression?

Comment 6

[Andrew G]

No, FireFox 3.6.24 have same problem.

Comment 7

[Alice0775 White]

But Firefox 3.6.24 is slightly faster than Nightly11.0a1.

I think this is diplication of bug 705174 because regression of the slowness are same range of bug 705174.

Comment 8

[Alice0775 White]

it is slow to draw outline.

http://mxr.mozilla.org/mozilla-central/source/toolkit/themes/winstripe/global/dirListing/dirListing.css#113
http://mxr.mozilla.org/mozilla-central/source/toolkit/themes/pinstripe/global/dirListing/dirListing.css#113

 tbody > tr:hover {
-  outline: 1px solid ThreeDLightShadow;
-  -moz-outline-radius: .3em;
+  background-color: #ccccff;
 }