iperf3 output result explain
 

hi everybody

i was confusing by iperf3 output key "retr", refer following:
[ 5] 166.00-167.00 sec 128 KBytes 1.05 Mbits/sec 0 91.2 KBytes
[ 5] 167.00-167.39 sec 128 KBytes 2.67 Mbits/sec 0 57.0 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 5] 0.00-167.39 sec 20.1 MBytes 1.01 Mbits/sec 0 sender
[ 5] 0.00-167.39 sec 0.00 Bytes 0.00 bits/sec receiver
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------


i think it really means tcp restransmission, but what unit it is.

any body knows ?