possiblydog

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  1. Hi everyone, I installed Unraid trial a few days ago and I love it. I'm not using for storage, but rather to passthrough GPUs to many different VMs. I have a new Ryzen 9 3900x, and it's currently running 2 Win10 VMs. 1 for my workstation, and one to run Steam games. I use in home streaming to stream from the Steam box to the workstation. This is absolutely killer because of the peace of mind of not running untrusted code on my main machine. Anyway, that all works fine. However, I'm noticing some real performance loss in single threaded workloads vs running on Windows natively. Many benchmark scores are about 15% lower. I believe the reason for this is that the processor is not boosting up to 4.6 GHz like it does in Windows. It maxes out at 4.2 ghz. Is this a limitation of unraid, the Linux 4.X kernel, or something else? Multithreaded benchmarks run at close to native speeds. My next question is about KVM (I think). I notice that KVM presents all cores to Windows as vanilla virtual cores, so Windows' scheduler cannot distinguish between real cores and HT cores. Natively, Windows has a bias for scheduling on real cores, but since that information isn't passed through KVM, the scheduler is made dumber. Is there some config that I'm missing? Thanks very much!