linux ping结果中mdev,Linux下PING中mdev含义
Linux在運(yùn)行 ping 命令的時候,里面有一項(xiàng)輸出叫 mdev,如下所示:
ping www.baidu.com
PING www.a.shifen.com (163.177.151.110) 56(84) bytes of data.
64 bytes from 163.177.151.110: icmp_seq=1 ttl=52 time=6.77 ms
64 bytes from 163.177.151.110: icmp_seq=2 ttl=52 time=6.51 ms
64 bytes from 163.177.151.110: icmp_seq=3 ttl=52 time=6.49 ms
64 bytes from 163.177.151.110: icmp_seq=4 ttl=52 time=6.49 ms
64 bytes from 163.177.151.110: icmp_seq=5 ttl=52 time=6.49 ms
64 bytes from 163.177.151.110: icmp_seq=6 ttl=52 time=6.47 ms
^C
--- www.a.shifen.com ping statistics ---
6 packets transmitted, 6 received, 0% packet loss, time 5488ms
rtt min/avg/max/mdev = 6.478/6.541/6.777/0.141 ms
mdev 就是 Mean Deviation 的縮寫,它表示這些 ICMP 包的 RTT 偏離平均值的程度,這個值越大說明你的網(wǎng)速越不穩(wěn)定
rtt是傳輸?shù)臅r間延遲Round-Trip Time
總結(jié)
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