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

[Frediano Ziglio]

> On 10 January 2017 at 10:34, Pavel Grunt < pgrunt at redhat.com > wrote:

> > Hi,
> 

> > On Tue, 2017-01-10 at 10:06 +0200, George Diamantopoulos wrote:
> 
> > > Hello all,
> 
> > >
> 
> > > I'm trying out qxl-dod
> 

> > Do you mean qxl-wddm-dod by qxl-dod ? If not you can get it from
> 
> > https://www.spice-space.org/download/windows/qxl-wddm-dod/
> 
> > https://gitlab.com/spice/qxl-wddm-dod
> 

> > The latest version is 0.15 released in December
> 

> Yes, I've also tried that binary with the same results :-(.

At least is not worst. 

I never experiences such terrible performances. 
What are you doing on the guest machine? Normal office applications? 
Playing videos? 
Which image compression are you using? 
What's the quality of the network? What about bandwidth and latency? 

Frediano 

> > Pavel
> 

> > > 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
> 
> > > QEMU: 2.8.0 (I'm not using xen's spin of qemu)
> 
> > > libvirt: 2.5.0
> 
> > > virt-manager: 1.4.0
> 
> > > spice: 0.13.3
> 
> > > seabios: 1.10.1
> 
> > >
> 
> > > Windows Guest VM is started with the following options:
> 
> > > /usr/libexec/xen/bin/qemu-system-i386 -xen-domid 2 -chardev
> 
> > > socket,id=libxl-cmd,path=/run/xen/qmp-libxl-2,server,nowait -no-
> 
> > > shutdown -mon chardev=libxl-cmd,mode=control -chardev
> 
> > > socket,id=libxenstat-cmd,path=/run/xen/qmp-libxenstat-
> 
> > > 2,server,nowait -mon chardev=libxenstat-cmd,mode=control -nodefaults
> 
> > > -no-user-config -name Windows -vnc none -display none -k en-us
> 
> > > -serial pty -spice port=5901,tls-port=0,disable-ticketing,agent-
> 
> > > mouse=on,disable-copy-paste -device qxl-
> 
> > > vga,vram_size_mb=64,ram_size_mb=64 -boot order=cd -smp 2,maxcpus=2
> 
> > > -device rtl8139,id=nic0,netdev=net0,mac=00:16:3e:25:27:01 -netdev
> 
> > > type=tap,id=net0,ifname=vif2.0-emu,script=no,downscript=no -machine
> 
> > > xenfv -m 1920 -drive
> 
> > > file=/dev/zvol/tank/windows,if=ide,index=0,media=disk,format=raw,cac
> 
> > > he=writeback -drive if=ide,index=1,readonly=on,media=cdrom,id=ide-
> 
> > > 832,file=/home/gd/Downloads/ISOs/SW_DVD5_WIN_ENT_N_LTSB_2016_64BIT_E
> 
> > > ng_Intl_MLF_X21-07527.ISO,format=raw
> 
> > >
> 
> > > I have used both vrozenfe binaries and flexvdi binaries: it made no
> 
> > > difference at all...
> 
> > > Also note that the mouse cursor is generally responsive. It will
> 
> > > only lag for a bit when hovering over items that need some
> 
> > > refreshing (e.g. highlighting).
> 
> > > BR,
> 
> > > George
> 
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