Fetching the TCP RTT in Linux
linux, procfs
Solution
Maybe the `ss` (socket statistics) util available in the iproute utils can help you with this.
# ss -i 'src 1.1.1.1:1234 and dst 2.2.2.2:1234'
State Recv-Q Send-Q Local Address:Port Peer Address:Port
ESTAB 0 0 1.1.1.1:1234 2.2.2.2:1234
reno wscale:2,7 rto:3380 rtt:855/602.5 ato:40 ssthresh:2 send 27.3Kbps rcv_space:5840
If you want more information what the `rtt` field is i think it is best to take a look at ss.c.
Problem
I need to fetch the RTT for TCP flow. I have looked into the proc file system but not able to get the RTT value of TCP .If any one having any idea regarding it that, in which file RTT would be stored pleae share. Thanks in advance.