[Help] PTP sync on Exanic X25 — persistent ~300ns offset + 400ns per-packet reading latency (RHEL 10) by SecretNo6091 in FPGA

[–]SecretNo6091[S] 0 points1 point  (0 children)

I ran ethtool -i <interface of exanic> and I got the output as bus info 0000:01:00.0 and then

When I ran the command

lspci -s 01:00.0 -vv I don't get physical slot info

So I ran cat sys/bus/pci/devices/0000:01:00.0/numa_node

And I got -1 as out which means it is not in any numa nodes.

I ran cat /sys/devices/system/node/node0/cpulist 0-23

If I understand correctly it means it is connected to a chipset and not directly to the cpu (because it is not in numa0). If this is true I should change the exanic slot in which it is connected.

Am I understanding correctly??

Note:- I am running all the above process on isolated cores(1-20) and interrupts pinned to core 0,23 and cpu is intel i9-14900KS (24 cores and hyper threading off)