I've narrowed it down to a cpu issue, I was giving 6 cores (I only have 6) to the VM and from looking at htop it seems to start lagging from major cpu spikes. For a moment Skype spikes to 250% cpu usage when it launches which would explain why it triggered the issue. Is there a steadfast rule for cpu allocation to gaming VM's? So far 6 has been unstable, 3 has always been choppy on boot, and 4 seems fairly stable but has still occasionally gotten choppy. I'm currently testing 5 but I expect it will be worse than 4. I'm also only currently running at 3.3GHz and could easily overclock to ~3.9 if that would make a big difference. I find it difficult to believe that it's not just an optimization issue though since I've never had any issues with this cpu before. On Feb 27, 2016 12:36 AM, "Ben J" <[email protected]> wrote:
> I've recently been having issues with my VM's framerate dropping at > random. It generally boots up completely fine, but at seemingly random > points it starts to stutter and doesn't stop until the VM is fully turned > off and back on again. It started out being fairly rare, but now happens on > almost every launch of the VM after a few minutes. > > My specs: > > Host OS: Arch Linux > > Guest OS: Windows 7 > > Motherboard: Asus Rampage IV Extreme > > CPU: I7-3960X > > Graphics: 2X EVGA GTX 580's > > My Launch Script: > > killall synergys > > synergys > > > QEMU_PA_SAMPLES=4096 QEMU_AUDIO_DRV=pa qemu-system-x86_64 -enable-kvm -m > 4096 -mem-path /dev/hugepages -cpu host,kvm=off \ > > -smp 6,sockets=1,cores=6,threads=1 \ > > -bios /usr/share/qemu/bios.bin -vga none \ > > -device vfio-pci,host=02:00.0,multifunction=on,x-vga=on \ > > -device vfio-pci,host=02:00.1 \ > > -net nic,model=virtio,vlan=0,macaddr=DE:AD:BE:EF:D4:41 \ > > -net tap,vlan=0,id=network0,ifname=tap0,script=no,downscript=no,vhost=on \ > > -usb -usbdevice host:046d:c534 -usbdevice host:045e:028e \ > > -soundhw hda \ > > -boot menu=on \ > > -drive file=/dev/sda1,format=raw,if=virtio,cache=none \ > > -drive > file=/mnt/LinuxStorage/ISOs/Windows/Drivers/virtio.iso,id=virtiocd,if=none,format=raw > -device ide-cd,bus=ide.1,drive=virtiocd > > > The issue seems to get triggered immediately whenever I launch a Skype or > Discord call. It also seems to be more likely when I'm running a game > within the VM (Tested with Rocket League and Rivals of Aether). It has also > happened without either of those being open though. I'm really at a loss. > I've tried disabling huge pages since I suspected that I might not have > enough, but that showed no difference. Restarting the computer fixes it > temporarily but it usually happens again shortly after I restart. The same > thing happens when I suspend and wake up the computer. Has anyone > experienced this issue before? >
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