[Spice-devel] Dreadful performance under Windows 10 Enterprise 2016 LTSB

[Christophe Fergeau]

On Tue, Jan 24, 2017 at 12:18:37AM +0200, George Diamantopoulos wrote:
> So, I guess I'm stuck waiting for iGVT-g to go upstream then :-(.

Another option would be to try and see if a kvm-based VM behaves better,
but I assume you cannot do that. Or if you are lucky, as the driver used on KVM is
improved, the issue you are seeing will get fixed as a side-effect. No
great answer to your problem I'm afraid :(

Christophe

> 
> On 19 January 2017 at 15:20, Christophe Fergeau <cfergeau at redhat.com> wrote:
> 
> > On Tue, Jan 10, 2017 at 10:06:33AM +0200, George Diamantopoulos wrote:
> > > Hello all,
> > >
> > > I'm trying out qxl-dod in a new installation, and performance is so low
> > > that the guest is practically unusable. Redrawing takes about 4-5
> > seconds.
> > > I have used qxl-dod in the past on the same hardware with much better
> > > results, although the software stack is different this time. I tried
> > > disabling all visual effects, but apart from the expected gains (fewer
> > > frames to redraw after each action due to the animations' being disabled)
> > > it didn't improve usability much.
> > >
> > > As I have no idea how to provide useful debugging information on this,
> > I'll
> > > try to outline my configuration here for now. Please let me know if
> > there's
> > > anything I can do to provide more meaningful information:
> > >
> > > Host: Gentoo linux, kernel 4.9.1
> > > Hypervizor: Xen 4.8.0
> >
> > Oh you are using Xen, you might be the first one testing qxl-wddm-dod on
> > Xen :(( This might explain the guest gets so slow with the driver (ie
> > bug only showing up when using Xen).
> >
> > Christophe
> >

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