https://developers.google.com/web/fundamentals/performance/rail
https://bugs.chromium.org/p/chromium/issues/detail?id=574343#c40
https://developers.google.com/web/fundamentals/performance/rail
https://bugs.chromium.org/p/chromium/issues/detail?id=574343#c40
You can find the timer(s) that are using too much CPU time using the Developer Tools timeline
原文：https://www.cnblogs.com/skating/p/8195185.html