Suricata

Starting Suri with the usual params and mempool size set to ~262143.
Just one 2MB Hugepage allocated.
The output:

...
Config: detect: No rules loaded from /dev/null [SigLoadSignatures:detect-engine-loader.c:351]
Info: detect: No signatures supplied. [SigLoadSignatures:detect-engine-loader.c:361]
RING: Cannot reserve memory
HASH: memory allocation failed
ice_fdir_init_filter_list(): Failed to create fdir hash table!
ice_fdir_setup(): Failed to init FDIR filter list.
ice_flow_init(): Failed to initialize engine 1
ice_dev_init(): Failed to initialize flow
Segmentation fault

This is up for a discussion if Suricata should still be responsible for this as the driver crashes Suricata. It is possible however to preestimate the size of hugepages by considering - mempool size, (potentially number of mempools - mempool per interface/queue), mbuf size (mtu + extra).