Hi
I have a non exit relay running on a root server (4 AMD Epyc cores, 8 GB RAM, 2.5 GBit/s Ethernet) I have limited tor to numcpus 2,
Why? Do you have other services on the server? Otherwise, omit num CPU. Let the tor daemon use all CPU's for crypto stuff.
Yes, there are other services running on that host, and that are the ressources I am willing to contribute to tor. 2 EPYC cores can deal easily with the crypto, especially as they are using HW crypto acceleration.
CU, Ricsi