On 02/08/2017 18:10, Måns Rullgård wrote: > ping -f is limited to 100 packets per second. > Use something like iperf in UDP mode instead.
CLIENT: DESKTOP # iperf3 -c 172.27.64.45 -u -b 950M Connecting to host 172.27.64.45, port 5201 [ 4] local 172.27.64.1 port 55533 connected to 172.27.64.45 port 5201 [ ID] Interval Transfer Bandwidth Total Datagrams [ 4] 0.00-1.00 sec 102 MBytes 858 Mbits/sec 13091 [ 4] 1.00-2.00 sec 114 MBytes 953 Mbits/sec 14541 [ 4] 2.00-3.00 sec 114 MBytes 953 Mbits/sec 14542 [ 4] 3.00-4.00 sec 114 MBytes 953 Mbits/sec 14541 [ 4] 4.00-5.00 sec 114 MBytes 953 Mbits/sec 14542 [ 4] 5.00-6.00 sec 114 MBytes 953 Mbits/sec 14541 [ 4] 6.00-7.00 sec 114 MBytes 953 Mbits/sec 14535 [ 4] 7.00-8.00 sec 114 MBytes 953 Mbits/sec 14536 [ 4] 8.00-9.00 sec 114 MBytes 953 Mbits/sec 14543 [ 4] 9.00-10.00 sec 114 MBytes 953 Mbits/sec 14541 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams [ 4] 0.00-10.00 sec 1.10 GBytes 943 Mbits/sec 0.247 ms 132176/143788 (92%) [ 4] Sent 143788 datagrams iperf Done. SERVER: TANGO BOARD # iperf3 -s Accepted connection from 172.27.64.1, port 44995 [ 5] local 172.27.64.45 port 5201 connected to 172.27.64.1 port 55533 [ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams [ 5] 0.00-1.00 sec 7.90 MBytes 66.2 Mbits/sec 0.218 ms 11365/12376 (92%) [ 5] 1.00-2.00 sec 9.13 MBytes 76.6 Mbits/sec 0.230 ms 13381/14550 (92%) [ 5] 2.00-3.00 sec 9.12 MBytes 76.5 Mbits/sec 0.290 ms 13372/14540 (92%) [ 5] 3.00-4.00 sec 9.11 MBytes 76.4 Mbits/sec 0.292 ms 13369/14535 (92%) [ 5] 4.00-5.00 sec 9.18 MBytes 77.0 Mbits/sec 0.178 ms 13374/14549 (92%) [ 5] 5.00-6.00 sec 9.10 MBytes 76.3 Mbits/sec 0.228 ms 13367/14532 (92%) [ 5] 6.00-7.00 sec 9.26 MBytes 77.7 Mbits/sec 0.607 ms 13356/14541 (92%) [ 5] 7.00-8.00 sec 9.23 MBytes 77.4 Mbits/sec 0.507 ms 13364/14545 (92%) [ 5] 8.00-9.00 sec 9.20 MBytes 77.1 Mbits/sec 0.215 ms 13351/14528 (92%) [ 5] 9.00-10.00 sec 9.16 MBytes 76.9 Mbits/sec 0.188 ms 13356/14529 (92%) [ 5] 10.00-10.04 sec 336 KBytes 72.2 Mbits/sec 0.247 ms 521/563 (93%) - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams [ 5] 0.00-10.04 sec 0.00 Bytes 0.00 bits/sec 0.247 ms 132176/143788 (92%) There is some packet loss, but the board doesn't lose connectivity. With smaller packets... # iperf3 -c 172.27.64.45 -u -b 950M -l 800 Connecting to host 172.27.64.45, port 5201 [ 4] local 172.27.64.1 port 35197 connected to 172.27.64.45 port 5201 [ ID] Interval Transfer Bandwidth Total Datagrams [ 4] 0.00-1.00 sec 90.6 MBytes 760 Mbits/sec 118724 [ 4] 1.00-2.00 sec 107 MBytes 894 Mbits/sec 139718 [ 4] 2.00-3.00 sec 106 MBytes 889 Mbits/sec 138918 [ 4] 3.00-4.00 sec 107 MBytes 895 Mbits/sec 139768 [ 4] 4.00-5.00 sec 106 MBytes 891 Mbits/sec 139275 [ 4] 5.00-6.00 sec 107 MBytes 895 Mbits/sec 139862 [ 4] 6.00-7.00 sec 107 MBytes 895 Mbits/sec 139825 [ 4] 7.00-8.00 sec 107 MBytes 895 Mbits/sec 139775 [ 4] 8.00-9.00 sec 107 MBytes 895 Mbits/sec 139849 [ 4] 9.00-10.00 sec 107 MBytes 895 Mbits/sec 139835 - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams [ 4] 0.00-10.00 sec 1.02 GBytes 880 Mbits/sec 0.009 ms 564117/1375520 (41%) [ 4] Sent 1375520 datagrams iperf Done. Accepted connection from 172.27.64.1, port 46151 [ 5] local 172.27.64.45 port 5201 connected to 172.27.64.1 port 35197 [ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams [ 5] 0.00-1.00 sec 60.8 MBytes 510 Mbits/sec 0.004 ms 33508/113252 (30%) iperf3: OUT OF ORDER - incoming packet = 147146 and received packet = 0 AND SP = 147497 iperf3: OUT OF ORDER - incoming packet = 146128 and received packet = 0 AND SP = 147690 iperf3: OUT OF ORDER - incoming packet = 146067 and received packet = 0 AND SP = 147863 iperf3: OUT OF ORDER - incoming packet = 147242 and received packet = 0 AND SP = 148039 iperf3: OUT OF ORDER - incoming packet = 163837 and received packet = 0 AND SP = 164363 [ 5] 1.00-2.00 sec 61.0 MBytes 511 Mbits/sec 0.198 ms 59635/139649 (43%) iperf3: OUT OF ORDER - incoming packet = 286437 and received packet = 0 AND SP = 287226 iperf3: OUT OF ORDER - incoming packet = 302990 and received packet = 0 AND SP = 305710 [ 5] 2.00-3.00 sec 61.5 MBytes 517 Mbits/sec 0.005 ms 58369/138944 (42%) iperf3: OUT OF ORDER - incoming packet = 427697 and received packet = 0 AND SP = 428089 iperf3: OUT OF ORDER - incoming packet = 441087 and received packet = 0 AND SP = 442963 iperf3: OUT OF ORDER - incoming packet = 453844 and received packet = 0 AND SP = 454238 [ 5] 3.00-4.00 sec 61.7 MBytes 517 Mbits/sec 0.008 ms 58975/139795 (42%) [ 5] 4.00-5.00 sec 61.3 MBytes 514 Mbits/sec 0.010 ms 58453/138795 (42%) [ 5] 5.00-6.00 sec 61.2 MBytes 513 Mbits/sec 0.014 ms 60141/140338 (43%) [ 5] 6.00-7.00 sec 61.3 MBytes 514 Mbits/sec 0.009 ms 59055/139384 (42%) iperf3: OUT OF ORDER - incoming packet = 993646 and received packet = 0 AND SP = 994370 [ 5] 7.00-8.00 sec 61.0 MBytes 512 Mbits/sec 0.007 ms 60265/140210 (43%) iperf3: OUT OF ORDER - incoming packet = 1134516 and received packet = 0 AND SP = 1135942 [ 5] 8.00-9.00 sec 62.6 MBytes 523 Mbits/sec 0.198 ms 57805/139795 (41%) iperf3: OUT OF ORDER - incoming packet = 1275612 and received packet = 0 AND SP = 1277716 [ 5] 9.00-10.00 sec 64.0 MBytes 538 Mbits/sec 0.007 ms 56029/139888 (40%) [ 5] 10.00-10.04 sec 2.74 MBytes 589 Mbits/sec 0.009 ms 1882/5470 (34%) - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams [ 5] 0.00-10.04 sec 0.00 Bytes 0.00 bits/sec 0.009 ms 564117/1375520 (41%) [SUM] 0.0-10.0 sec 13 datagrams received out-of-order A lot more packet loss, but RX holds on. Regards.