User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.0.1) Gecko/20020813 Netscape/7.0 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.0.1) Gecko/20020813 Netscape/7.0 In http://www.sohu.com/, and on any website with marquees in general, marquees take up to 8% each of CPU load. Is there any way to optimize this? Reproducible: Always Steps to Reproduce: 1. Open Page. 2. 3. Other sites: http://www.chinabyte.com/ http://www.phoenixtv.com/home/0,1328,1-1,00.html

->Layout

Well, do not use them... No dupe ==> NEW

patch for bug 164931 should help.

patches for bug 164931 and bug 132759 which have landed on the trunk should have reduced the CPU usage for Marquee and pages with Flash Animations. carineh00@netscape.com: Can you try your Marquee tests again using a current trunk build?

I tried to run the tests in the 10/21 trunk build, but the marquee seems to be broken in the trunk: text appears static. The marquee works in the Branch of 10/21. You can go to the following sites and quickly test this: http://www.sohu.com/ http://www.sina.com.cn/ http://www.chinabyte.com

See news://news.mozilla.org:119/20021014231821.A27772@is03.fas.harvard.edu for using MARQUEE on the trunk.

Tested on WinXP 750Mhz AMD. 10/21/2002 cvs trunk build -------------------------- sohu 9-21% sina 41-62% china 16-35% IE 6.0 ------ sohu 6-9% sina 57%-92% china 12%-50% N7 -- sohu 18-25% sina 61-80% china 26-77% The numbers look better. But Its hard to tell if its loading the same page each time. There is so much going on because each page contains a combination of flash, marquee and animated gifs. A better test would be to have an isolated Marquee. Marking fixed.

I have attached the results of my tests. I have taken CPU load both with Flash enabled and with Flash disabled, and have also indicated the # of marquees on each page. All results are taken with today's trunk. It seems that, roughly, we are burning 2%-4% CPU load per marquee, which is a nice drop from 8%!