mpstat has an option to show utilization per NUMA node

Not sure how long this has been a thing, but I recently discovered that mpstat takes a -N option for “NUMA Node” that works in the same way as -P for “Processor”. e.g. $ mpstat -N 0,1 1 will show stats for NUMA nodes 0 and 1 every 1 second. Just like mpstat -P ALL shows all processors mpstat -N ALL shows all NUMA nodes (and is easier to type).

The output looks like this

05:09:17 PM NODE    %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest  %gnice   %idle
05:09:18 PM 0 1.13 0.00 9.30 0.00 0.28 0.15 0.00 31.78 0.00 57.21
05:09:18 PM 1 0.40 0.00 8.03 0.00 0.28 1.05 0.00 31.34 0.00 58.78
^C

Average: NODE %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle
Average: 0 0.80 0.00 8.56 0.00 0.27 0.11 0.00 36.49 0.00 53.78
Average: 1 0.49 0.00 10.02 0.00 0.32 1.01 0.00 25.13 0.00 63.03

Using mpstat -N is is quite easy to check to see how the workload is distributed among the NUMA nodes of a multi-socket machine.