I'm thinking same thing as heroes of the storm, msrs spamming ? 2016-05-18 14:27 GMT+02:00 Andrei Grigore <andrei....@gmail.com>:
> Dear all, > > I have this very strange issue that I can not understand: > > Everything works flawlessly or even better than bare metal. ...thing is, > if I enable stereoscopic 3d vision (nvidia) in game, the performance drops > to unplayable. The reason for that are CPU /RAM intensive elements such as > view distances. Dropping other graphical elements to the lowest possible > value makes no difference. This means that the GPU is not the bottleneck. > Tested this on bare metal and i get around 50 fps with everything maxed > out. With VGA passthrough I barely get 20. Disabling 3d vision boosts > everything to 60 fps. > > The entire 3d vision sensor usb bus is passed through as well. I am > running just this VM with 8/8 cores of a fx-8230 cpu with 12 gb of ram. The > cpu is passed with host-passthrough. I am even using your latest patch and > had enabled hyperv extensions with nvidia GPUs. > > The VM is installed clean with nothing but the games in it. As said using > the same drivers on a bare metal windows works flawlessly. > > I cannot understand where the bottleneck is. CPU usage is not even close > to 100%, plenty of ram left and not even 1MB of swap is made. > > I don't even know where to seek the problem. What can cause such a massive > fps drop? Is there any bandtwidth limit that caps the 2x rendering needed > for 3d vision? > > Many thanks, > Andrei. > > _______________________________________________ > vfio-users mailing list > vfio-users@redhat.com > https://www.redhat.com/mailman/listinfo/vfio-users > >
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