We have the following issue. Our main hoster is equipped with Intel Xeon 6138 Gold (Supermicro), Hyper-V and one of our VMs is Centos 7 with WHM installed. We have been reported that the machine runs on low frequency 1.0GHz despite the fact that the CPU has higher supported frequencies. Obviously there is maybe missconfiguration in the Bios or the host machine itself (Hyper-V). Have somebody faced similar issues and can you give me a bit more clues and things where to look at. Thanks!
We followed the instructions at supermicro Turbo mode on Supermicro. Than we started only one virtual machine with assigned 8 vCPUs to it (Microsoft Hyper-V Server 2016). The behavior of the machine was exactly the one we want - entering in turbo frequency when putting load on it. But when we started all other virtual machines the clock speed went bellow 2GHz (1,4 - 1,8 GHz). We are observing it with taskmgr on the main host machine. We have in general ~ 10 virtial machines where each machine has different number VCPUs assigned to it. 2, 4, 8. In general we follow the rule to not assign more than 20 VCPUs on a virtual machine even we don't have now 15 per VM. Maybe we need to test the behavior with 1 vCPU for the second machine we will start after the first one?