Disable P-states by MSR

[vext01]

In this article: https://medium.com/@matteocroce/linux-and-freebsd-networking-cbadcdb15ddd

It says:

Intel Turbo Boost and P-states are known to skew benchmarks, so they were disabled by the kernel command line and writing withwrmsr-pX 0x1a0 0x4000850089 in the appropriate register on each CPU.

Needs research, but we might actually be able to disable P-states in hardware.

(Found by Davin)