My server reports numa_node=-1 for all ethernet devices. I am interested in high speed UDP capture (all jumbo packets). I am running Debian Wheezy (kernel 3.2.68-1+deb7u2). I am told that one needs to pin the data receiving process to the NUMA node closest to the NiC (an Intel 82599EB on a PCIe x8 slot and ixgbe driver). Is there a way to find out on which NUMA node is my ethernet card hooked to?
According to the chip set diagram in the manual for that board The single PCI slot is hooked into CPU1. You can see the diagram on page 14 of the linked PDF.