jocelyn falempe
2014-Aug-11 17:31 UTC
Performance degradation with pci passthrough & xen 4.4
Hi, I run a win7 DomU with an HD7950, and play games with it. this vm worked well on xen 4.1, 4.2 and 4.3. I have updated xen to 4.4 yesterday and now the performances are horrible. the graphic card is still recognized, and I can launch games, but win7 takes now 430s to boot, and I have between 1-3 FPS in most games. UI is also very slow. I used xl toolstack with 4.3 and didn't change my config file (attached). any clue ? Full system spec : core i7 4770, 16GB RAM, Dom0 : Archlinux + xen 4.4 from AUR DomU: Win7 64bits Archlinux uses the Intel HD4000, and the Radeon HD 7950 is reserved for the DomU here is a short video of my setup ( was using ubuntu at this time). https://www.youtube.com/watch?v=jDK69KZ0MC4 -- Jocelyn _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users