Thanks for the Tips. With hugepages enabled and 12 threads Im getting some more H/s. But I still have a huge difference between the two identical servers. Both running the same command. And htop shows 99-100% CPU utilization in both servers.... Very strange....
EDIT:
With 12 cores and hugepages enabled, the difference is even bigger:
Server1:
[2020-04-14 11:07:12.505] speed 10s/60s/15m 1655.8 1657.6 1654.0 H/s max 2204.9 H/s
Server2:
[2020-04-14 11:05:46.498] speed 10s/60s/15m 6188.6 6223.6 6235.3 H/s max 6273.5 H/s
Any idea what I can check? As said, both servers are showing 12 cores at 100% cpu utilization. (htop)
Well, the last idea for me would be: is it possible that one server keeps the CPU at some weird power saving mode? You can quickly check this with "lscpu" having a look at the MHz or you can (if it's really the same hardware all in all) compare the CPU temperature under full load with "sensors" (package lm-sensors). Good luck!
If what you say is true, its not so weird. There is a power and performance setting from the governor:
https://wiki.archlinux.org/index.php/CPU_frequency_scaling#Scaling_governorsI've used it before in Ubuntu to set the CPU to performance. It uses more wattage, generates more heat, but it also gives you more hash. Its probably not the ideal setting from an energy use to hash perspective (the last 10% isn't worth it IMO) but it may be something to look at.
I wonder how much RAM afeno has.