We have a bunch of imx8mm Mini Evk boards. One of our researchers noticed the ping times were averaging around 2.5ms and thinks that's way too high. He has pinged the evk from a pc and also from one evk to another via a Ethernet switch and directly connected with same results.
So just wanted to get thoughts on what might be causing that.
I tried playing with setting
net.ipv4.tcp_low_latency=1 and it didn't appear to make much of a difference.
When I run wireshark I see lots of ARP traffic going on and I suspect it's because of Avahi and other stuff installed.
I'm facing a similar issue with imx8M Plus, kernel 5.15.60.
I know it's been 2 years, maybe it was enough time to sort this issue out?
If so, can you please share some details about the root cause of the problem and a possible solution?
Thanks a lot,
It would make sense that Avahi could make the ping a bit slower due to the ARP request, although shouldn’t affect that much. Have you tested the ethernet with a smaller image that does not contains it? If you want to go to the bate minimum you could test it with the core-image-minimal. Alternatively, you may try to remove it from the image build to see how it affects the ping time.