Do you pass your USB keyboard or do you use emulated keyboard and one of QXL windows to grab/release focus? I use the second option and I had to follow the steps from the following link to deal with performance proplems with key repeats: http://serverfault.com/questions/624690/windows-guest-on-kvm-qemu-suffers-horrible-key-lag
On Sat, Mar 25, 2017 at 10:51 AM, Patrick O'Callaghan <[email protected]> wrote: > I'm running Windows 10 in a KVM/QEMU VM under Fedora 25. The host is a > 16GB i3770 and I have 4 threads (2 cores) dedicated to the VM with CPU > pinning and 8GB hugepages. The passthrough GPU is an Nvidia Geforce GTX > 1050. > > The guest disk is a 100GB raw file under vfio. The host disk is a 1TB > Toshiba SATA 2. > > This generally works quite well, except for two things: > > 1) KB events seem to overrun in games, i.e. there is stuttering and a > buzz when holding down a key for too long. Keyboard and mouse are > wireless Logitech hardware on a USB-2 port. > > Initially I had configured USB-2 on the VM and in an effort to fix this > changed it to USB-3, which seemed to make it slightly faster but not go > away (nb: this is still on the same physical USB-2 port). > > I then attempted to enable MSI as outlined in https://vfio.blogspot.co. > uk/2014/09/vfio-interrupts-and-how-to-coax-windows.html. After the USB- > 3 change (see above) Windows now shows the USB-3 controller as using > MSI, however the Windows Nvidia drivers don't seem to support it, even > after registry editing. Note that the GPU hardware does support it > according to Linux ('lspci -v -s <id>'). > > 2) There is quite frequent (every few seconds) visual stuttering -- > pause then continue -- when moving rapidly through a rendered scene, > possibly caused by disk I/O. > > I'm already using vfio. Would vfio-scsi make a difference? Should I be > thinking about a dedicated disk? > > Thanks for any hints. > > poc > > _______________________________________________ > vfio-users mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/vfio-users >
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