In going down the NUMA rabbit hole, I discovered "irqbalance".
Does anyone have an opinion on its usefulness? It is in portage.
On some multicore arm systems I am using irq affiity to steer certain irq's to faster CPU's (network, usb) - but from what I have been reading, irqbalance can improve a mixed workload but a system with a small number of busy irq's is better served by separating and locking them to different, more powerful processors. e.g., arm big.LITTLE architectures.
BillK
