What are the peculiarities of NUMA?
CPU and/or node caches can result in NUMA effects. For example, the CPUs on a particular node will have a higher bandwidth and/or a lower latency to access the memory and CPUs on that same node. Due to this, you can see things like lock starvation under high contention. This is because if CPU x in the node requests a lock already held by another CPU y in the node, it’s request will tend to beat out a request from a remote CPU z.
