95431 - CPU usage high on CSS Style viewer demo. Anim gif's stopped.

Status: RESOLVED WORKSFORME

(Core :: Layout: Images, Video, and HTML Frames, defect)

Description

[Martin Poirier]

Win98SE, mozilla build 2001081504

Reproducible : Always

Steps :
1. Open browser
2. Choose debug | viewer demos | #1 CSS Styles
3. Look below the words Bulleted List, there are some animated gears.
4. Scroll to the very bottom of the page
5. Notice the gears aren't animated anymore and CPU usage is close to 100%
6. Also notice that if you put your cursor over the Back, FWD, Reload or Stop
button, the cursor is flickering.

Actual result : High CPU usage causing visual defects

Expected Result : Mozilla should smoothly handle this page

Comment 1

[Doron Rosenberg (IBM)]

seeing this on win98 2001081703

-> style system for initial triage

Comment 2

[Pierre Saslawsky]

I confirm the problem on the Mac.  It is a recent regression, probably related to 
the ImageLib landing (bug 78690).

Curiously enough on the Mac when the application is in the background, the gears 
turn again.  When the app is front, the gears stop and it looks like we spend the 
entire time drawing again and again.

Raised severity and reassigned to ImageLib.

Comment 3

[saari (gone)]

looks OK on my win2k box, cpu usage is barely mesurable, no where near 100%,
much less 10%. Will try on Mac

Comment 4

[dan.m]

Saw this bug while looking for CSS issues on the Mac platform. Just FYI, the
steps below work just fine for me under OS X 10.1.3 and Moz .9.9.

Comment 5

[Stuart Parmenter]

wfm