Hi On Tue, May 19, 2020 at 5:40 PM Scott Talbert <swt@xxxxxxxxxx> wrote: > > On Tue, 19 May 2020, Marc-André Lureau wrote: > > >> Hi, > >> > >> Is virgl/OpenGL support through virt-manager supposed to work and perform > >> well? > >> > >> I have the following: > >> Host OS: Fedora 32 > >> Guest OS: Debian Unstable > >> > >> In virt-manager, I have the following: > >> Display Spice > >> Type: Spice server > >> Listen type: None > >> Password: Blank > >> Keymap: Blank > >> OpenGL: Checked & /dev/dri/renderD128 > >> > >> Video Virtio > >> Model: Virtio > >> Ram: - > >> Heads: 1 > >> 3D acceleration: Checked > >> > >> In the guest OS: > >> talbert@debian-unstable:~$ sudo dmesg | grep '\[drm\]' > >> [ 1.947975] [drm] pci: virtio-vga detected at 0000:00:01.0 > >> [ 2.019988] [drm] features: +virgl +edid > >> [ 2.022522] [drm] number of scanouts: 1 > >> [ 2.022529] [drm] number of cap sets: 2 > >> [ 2.048982] [drm] cap set 0: id 1, max-version 1, max-size 308 > >> [ 2.049125] [drm] cap set 1: id 2, max-version 2, max-size 688 > >> [ 2.049332] [drm] Initialized virtio_gpu 0.1.0 0 for virtio0 on minor 0 > >> > >> So it *seems* like things are configured correctly? However, performance > >> is not great. Performance is much better if I switch back to QXL video. > > > > It looks like your setup should be fine. What performance are you > > running? Local or remote? If it's 2D based anyway, chances are you get > > similar results with QXL or virtio, probably with better QXL results > > with the QXL Xorg driver. > > It's local. I don't have any quantitative data on performance, just my > observations on performance. In the guest, I'm just running the default > Debian DE (Gnome Shell) on Xorg. Wayland performs worse. Gnome Shell is > 3D, right? Yes. With virgl, make sure the virtio-gpu DRI driver is loaded (and not the sw/llvmpipe). On Xorg, make sure glamor is running. What's your host gpu?
