Google KVM-CPUFreq Driver To Dramatically Boost VM Performance, Power Efficiency in Linux ... How about for FreeBSD

Well, this is a communication mechanism where a guest can tell the host what it wants from power management. Both sides of this code are Linux-specific and presumably GPLed.

As a workaround you can run your CPUs at full power all the time :)

The good news is that jails will not be affected by the original problem.
 
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