Monitor https://www.kernel.org/doc/html/latest/admin-guide/numastat.html /sys/devices/system/node/node*/numastat In more detail: numa_hit A process wanted to allocate memory from this node, and succeeded. numa_miss A process wanted to allocate memory from another node, but ended up with memory from this node. numa_foreign A process wanted to allocate on this node, but ended up with memory from another node. local_node A process ran on this node’s CPU, and got memory from this node. other_node A process ran on a different node’s CPU and got memory from this node.