@tuxen Thank you! I will try it

@olivierlambert Could you please tell me which journals to study and where they are located?

@olivierlambert maybe... but the task is to solve the problem with the frequency on the current hardware

@olivierlambert may be... but in Windows server i got 3,7Mhz

@olivierlambert base freq 2.2mhz, turbo 3.7mhz

@olivierlambert Hello! I cannot update the BIOS, since a special version of BIOS is installed to work with engineering processors. Performance mode and turbo mode are enabled in the BIOS.
xenpm start 1|grep "Avg freq"
Avg freq 4810000 KHz
Avg freq 5069000 KHz
Avg freq 4995000 KHz
Avg freq 5032000 KHz
Avg freq 4958000 KHz
Avg freq 5069000 KHz
Avg freq 4070000 KHz
Avg freq 5106000 KHz
Avg freq 5106000 KHz
Avg freq 5032000 KHz
Avg freq 5143000 KHz
Avg freq 5106000 KHz
Avg freq 5106000 KHz
Avg freq 5032000 KHz
Avg freq 4958000 KHz
Avg freq 4551000 KHz
Avg freq 4477000 KHz
Avg freq 4736000 KHz
etc

Hello! I turned it on x12dai-n6 + 2*8360y and it works for me. However, it does not show the turbo frequency in the center and in guest virtual machines too. Can't figure it out further.

@KPS And I’m also trying to install the oops utility cpupowerutils, but nothing works - Epel release is not installed. Is it worth installing? Will it help me?

@lawrencesystems Hello! This question is directly related to the hypervisor.

@KPS Good day. I'll try to explain in more detail. For the above processors, I set turbo mode in the BIOS and want to get turbo frequency in guest virtual machines. but if I use command xenpm, I can see that there is a turbo frequency. But the hymervisor itself in the xen center does not show the turbo frequency. And the same in guest VMs.