99764 - enormous page display performance problems while scrolling

Status: RESOLVED DUPLICATE of bug 90198

(Core :: Layout, defect)

Description

[André Langhorst]

b: 0.9.4 release + nighlty from 09/12
os: w2k
repro: always

1) let the page load (you can already start while loading)
2) grab the scrollbar and scroll up and down and you'll notice 100% cpu and a
very very ugly scrolling speed

Comment 1

[Damian Yerrick]

I can reproduce this on Windows ME, build 2001091303.
Other similar bugs may include
  bug 85889, bug 90198, bug 96088, bug 97992

Comment 2

[Oliver Klee]

Over to Layout as a first guess.

Comment 3

[Marc Attinasi]

Help! Can somebody try to narrow down what it is on this page that is causing
the grief? Is it a dup? I'm swampped/doomed and cannot look right now.

Comment 4

[Chris Petersen]

I believe the problem is caused by the background image applied. 

background-attachment: fixed; background-repeat: repeat-y; background-position:
left left; background-image: url(bg_left.gif)}

The image is 1650 px wide by 4 px high. http://www.ds-2000.de/css/bg_left.gif. 
Removing the background image seems to speed up the scrolling.

Comment 5

[Chris Petersen]

Attachment: Background image removed from page

Comment 6

[Boris Zbarsky [:bzbarsky]]

Duplicate of "scrolling very slow  (fixed background)"

*** This bug has been marked as a duplicate of 90198 ***