Socket Stats

Socket stats (ss) este un utilitar ce afișează pentru fiecare conexiune TCP parametrii din transmission control block (TCB) precum CWND, thrghouput etc.

> ss -tin
State Recv-Q Send-Q  Local Address:Port  Peer Address:PortProcess
ESTAB 28     1475512 192.168.1.100:59480 172.16.0.100:5001

cubic wscale:9,9 rto:414 rtt:213.93/0.851 ato:40 mss:1448 pmtu:1500
rcvmss:536 advmss:1448 cwnd:187 ssthresh:158 bytes_sent:1330772 
bytes_acked:1061445 bytes_received:28 segs_out:923 segs_in:263 
data_segs_out:920 data_segs_in:1 send 10125779bps lastsnd:1 lastrcv:886
lastack:1 pacing_rate 12150896bps delivery_rate 9562208bps delivered:735 
busy:890ms rwnd_limited:104ms(11.7%) unacked:186 rcv_space:14480 
rcv_ssthresh:42242 notsent:1206184 minrtt:4.052