如何测试延时、抖动、丢包率？延时、抖动、丢包率各个数据的含义是什么？

   很简单，在Windows的左下角点击"开始"，选"运行"，键入 cmd 回车，就可以进入DOS窗口，在DOS命令状态下输入 ：

ping 202.105.135.211

就会得到下面的结果：

Pinging 202.105.135.211 with 32 bytes of data:

Reply from 202.105.135.211: bytes=32 time=93ms TTL=42

Reply from 202.105.135.211: bytes=32 time=86ms TTL=42

Reply from 202.105.135.211: bytes=32 time=81ms TTL=42

Reply from 202.105.135.211: bytes=32 time=80ms TTL=42

Ping statistics for 202.105.135.211:

Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

Minimum = 80ms, Maximum = 93ms, Average = 85ms

这里面，丢包率0%,抖动是-5ms到+8ms，延时是 85ms（毫秒），测试另外两个IP地址，可以看到：

Pinging 221.221.23.7 with 32 bytes of data:

Reply from 221.221.23.7: bytes=32 time=28ms TTL=48

Reply from 221.221.23.7: bytes=32 time=26ms TTL=48

Reply from 221.221.23.7: bytes=32 time=26ms TTL=48

Reply from 221.221.23.7: bytes=32 time=26ms TTL=48

Reply from 221.221.23.7: bytes=32 time=28ms TTL=48

Reply from 221.221.23.7: bytes=32 time=28ms TTL=48

Reply from 221.221.23.7: bytes=32 time=27ms TTL=48

Reply from 221.221.23.7: bytes=32 time=60ms TTL=48

Reply from 221.221.23.7: bytes=32 time=113ms TTL=48

Reply from 221.221.23.7: bytes=32 time=27ms TTL=48

Reply from 221.221.23.7: bytes=32 time=52ms TTL=48

Reply from 221.221.23.7: bytes=32 time=58ms TTL=48

Reply from 221.221.23.7: bytes=32 time=27ms TTL=48

Reply from 221.221.23.7: bytes=32 time=112ms TTL=48

Reply from 221.221.23.7: bytes=32 time=76ms TTL=48

Reply from 221.221.23.7: bytes=32 time=154ms TTL=48

Ping statistics for 221.221.23.7:

Packets: Sent = 16, Received = 16, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

Minimum = 26ms, Maximum = 154ms, Average = 54ms

丢包率0%,抖动是-28ms到+100ms，延时是 54ms（毫秒）Pinging 221.221.23.209 with 32 bytes of data:

Reply from 221.221.23.209: bytes=32 time=885ms TTL=48

Reply from 221.221.23.209: bytes=32 time=688ms TTL=48

Reply from 221.221.23.209: bytes=32 time=482ms TTL=48

Reply from 221.221.23.209: bytes=32 time=119ms TTL=48

Reply from 221.221.23.209: bytes=32 time=61ms TTL=48

Reply from 221.221.23.209: bytes=32 time=456ms TTL=48

Reply from 221.221.23.209: bytes=32 time=962ms TTL=48

Reply from 221.221.23.209: bytes=32 time=890ms TTL=48

Reply from 221.221.23.209: bytes=32 time=939ms TTL=48

Reply from 221.221.23.209: bytes=32 time=891ms TTL=48

Reply from 221.221.23.209: bytes=32 time=141ms TTL=48

Reply from 221.221.23.209: bytes=32 time=420ms TTL=48

Reply from 221.221.23.209: bytes=32 time=517ms TTL=48

Reply from 221.221.23.209: bytes=32 time=463ms TTL=48

Reply from 221.221.23.209: bytes=32 time=798ms TTL=48

Reply from 221.221.23.209: bytes=32 time=451ms TTL=48

Reply from 221.221.23.209: bytes=32 time=604ms TTL=48

Ping statistics for 221.221.23.209:

Packets: Sent = 17, Received = 17, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

Minimum = 61ms, Maximum = 962ms, Average = 574ms

丢包率0%,抖动是-511ms到+488ms，延时是 574ms（毫秒）

　　从上面3个结果看，第一组延时小，第三组延时大，丢包率为0％，第二组抖动大不可用，第三组延时、抖动都大，也不可用。

    根据经验，这3个指标中，以下的区间范围是比较理想的：

　　丢包率：小于8％

　　延时：小于200ms

　　抖动：正负不大于40ms

这就是延时、抖动、丢包率比较理想的范围，太大了，肯定就是网络速度出现了问题。

如何测试延时、抖动、丢包率