Comments 2 Posted In Red Hat Enterprise Linux Tags numa numactl why /sys/class/net/eth0/device/numa_node shows -1 Latest response 2019-10-10T09:24:05+00:00 Hi experts, I met an issue regarding NUMA, I have a physical server with a PCIE Network Interface Card, the os is RHEL 7.5. Why the value of /sys/class/net/eth0/device/numa_node is “-1”? td Started 2019-10-10T08:53:13+00:00 by temp dce Community Member 35 points Log in to join the conversation Responses Sort By Oldest Sort By Newest Red Hat Guru 8607 points 10 October 2019 9:19 AM Jamie Bainbridge This means the PCIe bus has no NUMA locality. The cost to go from the PCIe bus to any individual node should be the same. So handle all this device's IRQs on real cores within the same node as each other, but it should not matter which node. td Community Member 35 points 10 October 2019 9:24 AM temp dce Understood, thanks so much.