参考原文地址：https://stackoverflow.com/questions/20276097/chrome-devtools-100-cpu
问题描述，chrome打开devtools开发者工具，就会特别耗用cpu和内存，内存使用量一直增加，直到电脑崩溃
解决办法，打开开发者工具，找到source，切换到fileSystem，删掉他下面的本地文件
然后就好了
stactoverflow上是这么说的：Strange, i've been struggling for days, and i found the solution right after asking here..
some days ago looking inside DevTools Settings -> Workspace i set a local folder.
now i have unset it and the CPU issue vanished!
good!
but can someone explain me what happened?
ok，perfect！