Re: [libvirt-users] Sluggish performance with virtio and Win10

On Thu, Feb 18, 2016 at 08:49:38AM +0100, John Obaterspok wrote: > Hello, > > I'm using virt-manager on my F23 box to run a Windows 10 image but the > performance is so bad it's killing me. > > I have "vmx" flag in /proc/cpuinfo > > # lsmod |grep kvm > kvm_intel 167936 6 > kvm 503808 1 kvm_intel > > virtio-win-0.1.112-1.noarch > > But no virtio modules loaded. Should they be loaded nowadays? > Not on the host AFAIK. The disk format used is vmdk with no caching and native mode. > The io is 100% in windows task manager performing less than 1MB/s > > Any clues? > > What are the figures from the host? What is qemu doing and what are the other processes and devices doing?