On Wed, Jan 18, 2012 at 08:06:40AM +0100, Dominique Rodrigues wrote: > Hi, > > Since I use qxl driver in virtual desktop powered by qemu-kvm, I > found a strange problem with Gimp. > > After launching Gimp, open a new windows, and then try to draw > something. It appears that the drawing is very slow and does not > follow the mouse at all. > > It is the same if I use spicy, spicec or vnc to connect to my > virtual desktop. > > This problem does not appear with cirrus or vmware graphic drivers. > > I found that on any Linux distribution (CentOS, RHEL, Scientific > Linux, Debian, Ubuntu). > > I currently use : > - qemu-kvm 1.0 compiled with spice support > - spice-protocol 0.10.1 > - spice 0.10 > - spice-gtk 0.7 > - xorg-qxl driver 0.16 > > Is there any explanation for that ?
I would assume it is qxl driver cpu bound on something, probably busy waiting on the command ring. Can you run perf top on the guest? > > Regards, > > -- > > > Dominique Rodrigues > > nanoClouD <http://www.nanocloud.com> > 8, rue Lemercier > 75017 Paris > France > standard : +33 1 77 69 64 38 > 529 002 743 R.C.S. Paris > begin:vcard > fn:Dominique Rodrigues > n:Rodrigues;Dominique > org:nanoClouD > adr:;;8, rue Lemercier;Paris;;75017;France > email;internet:dominique.rodrig...@nanocloud.com > title:Directeur Technique > tel;work:+33 (0) 1 77 69 64 38 > tel;cell:+33 (0) 6 28 52 37 70 > url:www.nanocloud.com > version:2.1 > end:vcard > > _______________________________________________ > Spice-devel mailing list > Spice-devel@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/spice-devel _______________________________________________ Spice-devel mailing list Spice-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/spice-devel
