[Spice-devel] High bandwith using spice

[Frediano Ziglio]

> 
> On Sunday, March 26, 2017 11:08:39 PM AKDT Sören Busse wrote:
> > I've created a QEMU-VM with Windows 7 and the default QXL and virtio
> > drivers. The problem apperas if I try to connect to this VM from my LAN
> > which is limited to 1GBit/s
> > 
> > Youtube videos are lagging and qemu is using the full 1GBit/s of bandwith.
> > If I connect to this VM via localhost it's working pretty smoothly, but as
> > soon as I limit my loopback interface using the "tc"-command I get the same
> > result like in my LAN.
> > 
> > Is it normal that spice is using such a high bandwith and is there a way to
> > reduce it?
> 
> I would say the best way to reduce bandwidth is by not watching youtube
> videos
> via a SPICE connection. :)  I think the protocol is designed for remote
> control, not full-motion video. It is probably not as efficient as the
> compression used by youtube, and may not even be as efficient (although I
> haven't compared) as VNC.
> 
> j
> 

Actually Spice with streaming settings turned on is more efficient than
VNC using compressions similar to youtube.

Frediano