I’ve observed package loss on the AGX Orin development board on the ethernet interface, where a similar setup on a TX2 development board works fine. There is no package loss when bitrate is below 1 mbps and above ~500, but does otherwise drop quite a few packages. I’m measuring package drop using ip…

I don’t know if all of the interfaces are managed. Plus I also don’t know which interface the nstat is applied to. I am uncertain if the TcpRetransSegs applies to the interface in question. Probably? But if we go back to the earlier ifconfig of eth0 we still see no drops, overruns, collisions, carri…

I tried the same test on my Orin AGX connected with a cat 5e 1000Mbps ethernet cable to a desktop running the command iperf3 -s. Here is the output from Orin. iperf3 -c 10.3.0.1 -b 100mbps Connecting to host 10.3.0.1, port 5201 [ 5] local 10.3.0.228 port 38448 connected to 10.3.0.1 port 5201 [ ID]…

please try to disable the ubuntu GUI on Orin and tested again. Also, is this rel-35.1 or rel35.2.1?

It’s the same without GUI. It’s rel-35.1 I wasn’t entirely sure what precisely “disable the ubuntu GUI” means. It wasn’t connected to display in the first place, but I ended up flashing a minimal flavor rootfs, so there should be absolutely no GUI running. ( Root File System — Jetson Linux Develope…

Please upgrade to rel-35.2.1. There are several patches added to enhance the 10GbE perf of Orin devkit. And desktop is still needed to be disabled.

Thanks for the reply Wayne, I’ve flashed a minimal image (without GUI), now from rel-35.2.1, with the same basic setup as I described previously. The situation has greatly improved when the bandwidth is limited from SW. It’s now at ~1-3 resends per GB. However, using the 100 mbps cable, the situa…

Any time you have such an error you should post the output of this if run right after the error (e.g., after the iperf3 test): ifconfig (or ip -s addr)

Here’s the output of ifconfig right after the iperf3 run: eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1466 inet 10.52.9.1 netmask 255.255.255.0 broadcast 10.52.9.255 inet6 fe80::xxxx:xxxx:xxxx:xxxx prefixlen 64 scopeid 0x20<link> ether xx:xx:xx:xx:xx:xx txqueue…

Note that the NIC itself did not report any errors, no drops, and no overruns. If this was taken after a test with drops, then it implies the software consuming or sending was itself responsible for the issues. An example might be if data arrived too fast, which in turn might imply the driver servic…

Thanks for the input, and it’s good to sort out that the underlying network should be fine. I tried running our UDP-based application simultaneously with iperf, and it still drops packages (though the drop rate has gone down a bit after the update and disabling the GUI) I’m not sure how iperf is i…

UDP is designed to drop packets under various conditions, e.g., network too congested. However, this would show up as a “dropped” in the “ifconfig” command for that interface, and I did not see that. Whenever you see this, be sure to examine the ifconfig output for that particular interface; if it s…

Package loss on bandwidth reduced network - AGX Orin

Robotics & Edge Computing Jetson Systems Jetson AGX Orin

Honey_Patouceul March 28, 2023, 6:55pm 22

You may try AGX Orin - mtu 1466 - #9 by Honey_Patouceul for setting MTU, but it might not change the RX dropped packets issue.
I’m also seeing some RX dropped packets when using L4T versions from R32.7, even with quiet networks.

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Package loss on bandwidth reduced network - AGX Orin

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