[virt-tools-list] virt-manager over a slow link

Cole Robinson crobinso at redhat.com
Wed Sep 23 12:58:15 UTC 2009

On 09/22/2009 05:28 PM, Daniel Berteaud wrote:
> Hi everyone.
> I'm using virt-manger 0.8 and I'm quite happy with it. I'm connecting to
> a libvirt daemon over SSH. Everything is fine when I'm on the same local
> network as the server. But I sometime need to use it over slower links,
> through a VPN (~300 or 400kbps) and the VNC display is so slow that it
> makes it very difficult to use. But when I use VNC (xvncviewer) on
> others real hosts (vino for example) through the same VPN, a lossy
> compression is used, and the speed is acceptable. Is there a way to use
> lossy compression and/or reduce colore depth in order to accelerate the
> VNC console through virt-manager (or virt-viewer) (other than manually
> querying libvirt to find the VNC port of a VM, and open a separate SSH
> tunnel) ?

gtk-vnc allows this, but we don't expose the knobs in virt-manager. I'm
all for it, just please file a feature request against upstream


> It'd be great to have virt-manager automatically trying different
> encodings depending on the available BW, or to be able to manually
> adjust the quality.

Sounds like a good idea, not sure how it would be implemented though.
Feel free to file an RFE for that as well.

- Cole

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