[libvirt-users] Sluggish performance with virtio and Win10

[John Obaterspok]

2016-02-18 10:13 GMT+01:00 Martin Kletzander <mkletzan at redhat.com>:

> 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?
>
>
What is the best way to find this out?

-- john
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