2016-09-13 16:43 GMT+02:00 Christophe Fergeau <cferg...@redhat.com>: > Hey, > > On Tue, Sep 13, 2016 at 08:47:18AM +0200, Rob Verduijn wrote: > > Hello, > > > > I'm trying to improve my spice performance on a kvm host/guest. > > It's currently rather slow and I can see screens beeing build up, and > > delays when draging windows. > > > > It's being tunneled through openvpn, which is set to use tcp. > > tcp required because of the firewall which is maintained by 3rd party. > > > > I have full access to the kvm host, kvm guest and openvpn server. > > > > Have you got any tips so that I can improve spice performance ? > > I alrready am running tuned with the virtual-guest profile for guests > and > > host profile for the host. > > All systems are runnning CentOS 7 > > > > Any tips for : > > - the KVM host ? > > - the KVM guest ? > > - the openvpn server ? > > I would try to minimize latency, and to get as much bandwidth as > possible, probably some tweaks can be done for that on the openvpn side? > Regarding QEMU, make sure you are using the QXL video driver as well as > the SPICE agent in the guest. There are also a bunch of compression > options that you can try to tweak, see > https://libvirt.org/formatdomain.html#elementsGraphics > > Christophe > bandwith and latency are not mine to decide about QXL-driver check spice-agent check tweaks in guest definition : <graphics type='spice' port='5999' autoport='no' listen='0.0.0.0'> <listen type='address' address='0.0.0.0'/> <image compression='glz'/> <jpeg compression='always'/> <zlib compression='always'/> <streaming mode='all'/> </graphics>
I tried them on auto_glz,auto,auto,filter (tried every combo) But I guess my bandwith is not stable and since setting them like this gives the best performance. <gl enable='yes'/> gets an error if I add that to the config. It says this option is included since 1.3.3 and centos has qemu-kvm 1.5.3 Did I forget something to enable this ? Rob Verduijn
_______________________________________________ Spice-devel mailing list Spice-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/spice-devel
