> > > > Hi, > > I've observed some latency issues, for example, changing focus from one > terminal to another is a bit sluggish. Typing isn't too bad. > Interaction with the sliding GNOME unlock screen and drawing the desktop > after unlock is painfully slow. > Looks like your problems are due to a low bandwidth instead of high latency. Does spice detect a low bandwidth (should be written in the logs) ? > The virtual server I connect to runs Debian jessie and GNOME 3 desktop, > it is a default install: > Xorg = 2:1.16.4-1 > xserver-xorg-video-qxl = 0.1.1-2+b1 > spice-vdagent = 0.15.0-1.2 > > I'm monitoring the latency of the connection to the KVM/libvirt/SPICE > server with Smokeping, average ping time is about 0.8ms, no packet loss. > With such network latency you should not have much network latency issues, unless ssh (which seems you are using add a lot of it) add this issue. > > I've setup the KVM/libvirt/SPICE host like this: > Debian stretch > Kernel = 4.9.13 > libspice-server1 = 0.12.8-2.1 > libvirt0 = 3.0.0-3 > > > I've tried using both virt-manager and virt-viewer as clients on a > Debian jessie system, connecting over SSH to the KVM host, these are the > client versions: > > virt-manager = 1:1.0.1-5 > virt-viewer = 1.0-1 > Can you try without SSH? > I noticed it appears a little better with virt-manager than virt-viewer, > should there be any difference between these two products if they both > use the same protocol? > Maybe is due to some compression settings difference. Not sure which compression algorithms are used by virt-manager/virt-viewer. > Can I do anything to tweak the .ssh/config to make it better? It > occurred to me that adding "IPQoS lowdelay" might be useful as it > defaults to "throughput" for non-interactive connections. Maybe > virt-manager should add that on the ssh command line? > display requires quite lot of bandwidth, if you set network to low delay but you use a lot of bandwidth you'll get worst performance. > Is there any way to see SPICE latency statistics in the virt-manager GUI? > > Would any other SPICE viewer make a difference? > > Are there any changes I should make to the GNOME desktop configuration > to make it work better through SPICE? I've heard people comment on > changing to fvwm. > > Can anybody make any other suggestions? > > Regards, > > Daniel Frediano _______________________________________________ Spice-devel mailing list Spice-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/spice-devel