Round Trip Time (RTT)

Round Trip Time (RTT) is the length time it takes for a data packet to be sent to a destination plus the time it takes for an acknowledgment of that packet to be received back at the origin. The RTT between a network and server can be determined by using the ping command.


This will output something like:

PING ( 56 data bytes
64 bytes from icmp_seq=0 ttl=55 time=25.050 ms
64 bytes from icmp_seq=1 ttl=55 time=23.781 ms
64 bytes from icmp_seq=2 ttl=55 time=24.287 ms
64 bytes from icmp_seq=3 ttl=55 time=34.904 ms
64 bytes from icmp_seq=4 ttl=55 time=26.119 ms
--- ping statistics ---
5 packets transmitted, 5 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 23.781/26.828/34.904/4.114 ms

In the above example, the average round trip time is shown on the final line as 26.8ms.

See also