Hi,
I’m using Xavier NX devkit with Jetpack 5.0.2. I have one EVB-LAN7800LC-1 from Microchip, want to use this in my project. But unfortunately, it has an issue when I test it.
When I insert the adapter into USB port (4 USB-A ports are USB 3.1), the adapter was recognized and interface eth1 created. Assigning static IP to it, I’m able to use it. But ping & iperf3 give bad performance
# ping 10.10.1.2
PING 10.10.1.2 (10.10.1.2) 56(84) bytes of data.
64 bytes from 10.10.1.2: icmp_seq=1 ttl=64 time=1033 ms
64 bytes from 10.10.1.2: icmp_seq=3 ttl=64 time=469 ms
64 bytes from 10.10.1.2: icmp_seq=4 ttl=64 time=500 ms
64 bytes from 10.10.1.2: icmp_seq=5 ttl=64 time=452 ms
64 bytes from 10.10.1.2: icmp_seq=6 ttl=64 time=276 ms
64 bytes from 10.10.1.2: icmp_seq=7 ttl=64 time=54.3 ms
64 bytes from 10.10.1.2: icmp_seq=8 ttl=64 time=468 ms
64 bytes from 10.10.1.2: icmp_seq=9 ttl=64 time=192 ms
64 bytes from 10.10.1.2: icmp_seq=10 ttl=64 time=496 ms
64 bytes from 10.10.1.2: icmp_seq=11 ttl=64 time=498 ms
64 bytes from 10.10.1.2: icmp_seq=12 ttl=64 time=520 ms
64 bytes from 10.10.1.2: icmp_seq=13 ttl=64 time=471 ms
64 bytes from 10.10.1.2: icmp_seq=14 ttl=64 time=501 ms
64 bytes from 10.10.1.2: icmp_seq=15 ttl=64 time=488 ms
64 bytes from 10.10.1.2: icmp_seq=16 ttl=64 time=515 ms
# iperf3 -c 10.10.1.2
Connecting to host 10.10.1.2, port 5201
[ 5] local 10.10.1.90 port 33706 connected to 10.10.1.2 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 53.2 MBytes 446 Mbits/sec 0 173 KBytes
[ 5] 1.00-2.00 sec 63.2 MBytes 530 Mbits/sec 0 173 KBytes
[ 5] 2.00-3.00 sec 65.5 MBytes 550 Mbits/sec 0 173 KBytes
[ 5] 3.00-4.00 sec 67.9 MBytes 570 Mbits/sec 0 191 KBytes
[ 5] 4.00-5.00 sec 72.1 MBytes 605 Mbits/sec 0 201 KBytes
[ 5] 5.00-6.00 sec 87.0 MBytes 730 Mbits/sec 0 211 KBytes
[ 5] 6.00-7.00 sec 96.7 MBytes 811 Mbits/sec 0 262 KBytes
[ 5] 7.00-8.00 sec 98.5 MBytes 826 Mbits/sec 0 262 KBytes
[ 5] 8.00-9.00 sec 104 MBytes 870 Mbits/sec 0 262 KBytes
[ 5] 9.00-10.00 sec 100 MBytes 842 Mbits/sec 0 262 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 808 MBytes 678 Mbits/sec 0 sender
[ 5] 0.00-10.00 sec 807 MBytes 677 Mbits/sec receiver
iperf Done.
If I use a USB3 hub in between (LAN7800 connect to USB3 hub, and hub connect to Xavier NX Devkit), the result was much better.
# ping 10.10.1.2
PING 10.10.1.2 (10.10.1.2) 56(84) bytes of data.
64 bytes from 10.10.1.2: icmp_seq=1 ttl=64 time=0.793 ms
64 bytes from 10.10.1.2: icmp_seq=2 ttl=64 time=1.04 ms
64 bytes from 10.10.1.2: icmp_seq=3 ttl=64 time=0.958 ms
64 bytes from 10.10.1.2: icmp_seq=4 ttl=64 time=1.02 ms
64 bytes from 10.10.1.2: icmp_seq=5 ttl=64 time=0.851 ms
64 bytes from 10.10.1.2: icmp_seq=6 ttl=64 time=0.984 ms
64 bytes from 10.10.1.2: icmp_seq=7 ttl=64 time=0.573 ms
64 bytes from 10.10.1.2: icmp_seq=8 ttl=64 time=0.871 ms
64 bytes from 10.10.1.2: icmp_seq=9 ttl=64 time=0.859 ms
64 bytes from 10.10.1.2: icmp_seq=10 ttl=64 time=0.803 ms
64 bytes from 10.10.1.2: icmp_seq=11 ttl=64 time=0.907 ms
64 bytes from 10.10.1.2: icmp_seq=12 ttl=64 time=0.898 ms
# iperf3 -c 10.10.1.2
Connecting to host 10.10.1.2, port 5201
[ 5] local 10.10.1.90 port 33722 connected to 10.10.1.2 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 111 MBytes 932 Mbits/sec 0 255 KBytes
[ 5] 1.00-2.00 sec 112 MBytes 941 Mbits/sec 0 270 KBytes
[ 5] 2.00-3.00 sec 112 MBytes 943 Mbits/sec 0 270 KBytes
[ 5] 3.00-4.00 sec 112 MBytes 940 Mbits/sec 0 270 KBytes
[ 5] 4.00-5.00 sec 112 MBytes 939 Mbits/sec 0 270 KBytes
[ 5] 5.00-6.00 sec 112 MBytes 937 Mbits/sec 0 304 KBytes
[ 5] 6.00-7.00 sec 112 MBytes 942 Mbits/sec 0 304 KBytes
[ 5] 7.00-8.00 sec 90.6 MBytes 760 Mbits/sec 0 304 KBytes
[ 5] 8.00-9.00 sec 99.2 MBytes 832 Mbits/sec 0 304 KBytes
[ 5] 9.00-10.00 sec 113 MBytes 946 Mbits/sec 0 457 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 1.06 GBytes 911 Mbits/sec 0 sender
[ 5] 0.00-10.00 sec 1.06 GBytes 910 Mbits/sec receiver
iperf Done.
Do you have any idea why this happens? Thank you.