Allow KVM/Qemu to use Hyper-V enlightenment settings

/ March 16th, 2016/ Posted in iPhone, Server, Windows / No Comments »

Problem:
Slow performance for Windows Servers in KVM/QEMU environments

Solution:

Enable KVM to emulate the Hyper-V settings and allow the guest VMs to take advantage.

sudo virt-xml $VMNAME --edit --features hyperv_relaxed=on,hyperv_vapic=on,hyperv_spinlocks=on,hyperv_spinlocks_retries=8191
sudo virt-xml $VMNAME --edit --clock hypervclock_present=yes

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