NIC Delays issues

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

Hi all,

I am using a TX2 with Astro carrier board.

I connected my camera on the non native NIC.
Somes frames were dropped.

So i decided to use the native NIC & every things went ok.
And so by pinging an IP through the other NIC (the non native one) i saw there were losts of ping delays very high :

nvidia@tegra-ubuntu:~$ ping 192.168.0.30
PING 192.168.0.30 (192.168.0.30) 56(84) bytes of data.
64 bytes from 192.168.0.30: icmp_seq=1 ttl=64 time=0.755 ms
64 bytes from 192.168.0.30: icmp_seq=2 ttl=64 time=0.530 ms
64 bytes from 192.168.0.30: icmp_seq=3 ttl=64 time=2.61 ms
64 bytes from 192.168.0.30: icmp_seq=4 ttl=64 time=2.17 ms
64 bytes from 192.168.0.30: icmp_seq=5 ttl=64 time=0.252 ms
64 bytes from 192.168.0.30: icmp_seq=6 ttl=64 time=2.04 ms
64 bytes from 192.168.0.30: icmp_seq=7 ttl=64 time=2.33 ms
64 bytes from 192.168.0.30: icmp_seq=8 ttl=64 time=0.332 ms
64 bytes from 192.168.0.30: icmp_seq=9 ttl=64 time=0.824 ms
64 bytes from 192.168.0.30: icmp_seq=10 ttl=64 time=1.97 ms
64 bytes from 192.168.0.30: icmp_seq=11 ttl=64 time=0.889 ms
64 bytes from 192.168.0.30: icmp_seq=12 ttl=64 time=0.925 ms
64 bytes from 192.168.0.30: icmp_seq=13 ttl=64 time=61.4 ms
64 bytes from 192.168.0.30: icmp_seq=14 ttl=64 time=65.8 ms
64 bytes from 192.168.0.30: icmp_seq=15 ttl=64 time=2.46 ms
64 bytes from 192.168.0.30: icmp_seq=16 ttl=64 time=2.77 ms
64 bytes from 192.168.0.30: icmp_seq=17 ttl=64 time=8.64 ms
64 bytes from 192.168.0.30: icmp_seq=18 ttl=64 time=2.09 ms

Do you have the same issue ?
I think this is why i had frame drops.

Bye
François

2

i forgot to mention i am running l4T 28.2

3

Try the same experiment after maxing out performance (no energy savings):

sudo nvpmodel -m 0
sudo ~ubuntu/jetson_clocks.sh
4

Hi francoisBilberry,
Have you checked the bandwidth via iperf?

5

hi,

i am already in nvpmodel 0.
i also did jetson_clocks

i think more about a hardware issue but i may be wrong.
i will try to go on testing.

i stremaed my camera on one port & it seems ok. (native NIC of TX2)
on the other it seems NOK. (non native NIC)

François

6

We don’t have experience in using NIC display. So does it transmit frame buffers via ethernet or wifi? What do native NIC and non-native NIC mean?