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- Red Hat Enterprise Linux
I have machine (Fujitsu RX300 S7) which has two numa nodes (2x6core XEON CPU). There is dual 10Gbit NIC connected to CPU1.
I can see via /proc/interrupts, that NIC (detected 24 IRQs - HT enabled) has balanced interrupts on all 24 cores on both NUMA nodes.
IRQBALANCE should balance interrupts only on local NUMA node, where NIC is connected (cores 0-5 and 12-17 which is CPU1). This is the same for RHEL7 and RHEL8.
Does someone have idea what is wrong?