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
