ss -t
https://www.man7.org/linux/man-pages/man8/ss.8.html
rtt:<rtt>/<rttvar> rtt is the average round trip time, rttvar is the mean deviation of rtt, their units are millisecond
ss 命令参数
原文：https://www.cnblogs.com/studyNT/p/14600688.html
