It's being a very long time that I discovery that in some web pages, that use function requestAnimationFrame will cause a lot of cpu, but very little in Chrome. I have already submitted this bug nearly two years ago without printout requestAnimationFrame, no one replied. I submitted again and mention requestAnimationFrame recently, hope there will be some response. If anyone interested in this issue and know some tech in javascript please help. You can enter https://www.baidu.com/ and click one of the topic in all the 百度热搜 which have 弹幕滚动(using requestAnimationFrame, and cause a lot of cpu usage) on right.
MacOS's Safari use a lot of cpu on some js web page using requestAnimationFrame then chrome
弹幕滚动 part
Thank you for the report. I can reproduce, and have filed this as https://bugs.webkit.org/show_bug.cgi?id=284934