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

[Christophe Fergeau]

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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