It seems everything is alright, I would try hugepages and see if that helps it describes how to do it in the arch wikis guide on pci passthrough
On Jan 30, 2017 10:48 PM, "Alyx" <overlorda...@gmail.com> wrote: > Hopefully this reply works. > So. I have an FX-8350. I have the exact issue as described, and believe > the person he was talking about. > > Here's my config - http://pastebin.com/McuiqyDt > Note that the above config is just the one I am running just now and has > some options that have no effect, such as "vmport=off", in a desperation > attempt to see if any option makes a difference. > > So I've tried many things to get the stuttering to subside. I've tried, > changing the kernel tick-rate, changing to a realtime kernel, changing to > the CK kernel (with the belief that a different I/O scheduler might solve > it), making the VM BIOS, changing the pre-emptive state of the kernel, > changing the PCIE slot of the GPU (so that it is now in slot 1, and the > "main" GPU in slot 2), isolating cores, hugepages, moving threads via cset. > And of course a combination of all of the above. The only thing that sort > of solves it if I reduce the number of cores I pass to the VM, more than 4 > and it increases the stuttering, and less than 4 makes it not really > powerful enough for higher-end gaming. > > There was a random thought that it could've been something to do with the > shared FPU, however after isolating the last 6 cores and only passing every > second core (3, 5, 7) so that they are on separate FPU modules (meaning > that it's "pair" is not doing any work at all), yields the same results as > passing 3 cores normally. > > I would describe the issue as a stuttering of sorts, where the game > freezes and then suddenly speeds up to catch back up to realtime (sound > usually works as normal during the stutter as if nothing happened). It's > fine within a desktop environment and when doing benchmarks such as > Cinebench and Unigine-Heaven (Heaven being exactly the same as bare metal). > However it's when I move into a more game-like situation such as 3D Mark's > benchmarks where the stuttering appears. Some 3D Mark benchmarks can even > cause the VM/Program to freeze such as the API overhead test which also > displays a large amount of stuttering during the test (assuming it doesn't > crash half way though of course). Another program-specific issue is that > the program HWINFO also locks up the entire VM when it tries to detect the > CPU (works on Intel hardware) causing Windows to shut down after a ~10 > seconds. Sure the HWINFO isn't too much of an issue, but it could be > related. > The stuttering becomes more apparent as the game tries to load in > textures, for example exiting out of a safe area into a large open world > (Game: The Division) causes huge amounts of stuttering until everything has > finished "popping-in". However, once everything has loaded in, if I look at > the frametimes in MSI Afterburner I can see that it varies dramatically, so > I'll be at 60 FPS and see the frametimes jump from low ~20ms to 100ms+ with > no "big" stuttering like when the textures are loading. > > Any help is appreciated and I'll try any suggestions at this point >
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