string(234) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=ps%E6%AF%94%E8%BE%83%E5%90%83cpu%E8%BF%98%E6%98%AF%E6%98%BE%E5%8D%A1 => Failed to connect to 14.116.215.7 port 38230: Connection refused"
ps比较吃cpu还是显卡
