use reply to all. don't use all cores, use only half of them, try isolcpus, you can try http://ck-hack.blogspot.com/ when you decrease number of cores change host-passthrough to host-model, disable hypervisor. My setup isn't perfect, but I have gpu performance close to native: https://paste.pound-python.org/show/eGf746XJsdtYrA1GEVIl/ but I have i7 6700k so I had to turn off some of hyperv because native were better.
On 01/06/2017 01:29 PM, Marius Steffen wrote: > Of course, sorry, I forgot to attach it: > > <domain type='kvm' > xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'> > <name>game_win_v2</name> > <uuid>5c7150f7-7f7c-4265-acd5-6bed59a10192</uuid> > <memory unit='KiB'>10485760</memory> > <currentMemory unit='KiB'>10485760</currentMemory> > <vcpu placement='static'>8</vcpu> > <cputune> > <vcpupin vcpu='0' cpuset='0'/> > <vcpupin vcpu='1' cpuset='1'/> > <vcpupin vcpu='2' cpuset='2'/> > <vcpupin vcpu='3' cpuset='3'/> > <vcpupin vcpu='4' cpuset='4'/> > <vcpupin vcpu='5' cpuset='5'/> > <vcpupin vcpu='6' cpuset='6'/> > <vcpupin vcpu='7' cpuset='7'/> > </cputune> > <os> > <type arch='x86_64' machine='pc-i440fx-2.6'>hvm</type> > <loader readonly='yes' > type='pflash'>/usr/local/share/ovmf-git/x64/OVMF_CODE.fd</loader> > <nvram>/var/lib/libvirt/qemu/nvram/game_win_v2_VARS.fd</nvram> > </os> > <features> > <acpi/> > <apic/> > <hyperv> > <relaxed state='on'/> > <vapic state='on'/> > <spinlocks state='on' retries='8191'/> > <vendor_id state='on' value='Apfelbaum'/> > </hyperv> > <kvm> > <hidden state='on'/> > </kvm> > <vmport state='off'/> > </features> > <cpu mode='host-passthrough'> > <topology sockets='1' cores='4' threads='2'/> > </cpu> > <clock offset='localtime'> > <timer name='rtc' tickpolicy='catchup'/> > <timer name='pit' tickpolicy='delay'/> > <timer name='hpet' present='no'/> > <timer name='hypervclock' present='yes'/> > </clock> > <on_poweroff>destroy</on_poweroff> > <on_reboot>restart</on_reboot> > <on_crash>restart</on_crash> > <pm> > <suspend-to-mem enabled='no'/> > <suspend-to-disk enabled='no'/> > </pm> > <devices> > <emulator>/usr/sbin/qemu-system-x86_64</emulator> > <disk type='file' device='disk'> > <driver name='qemu' type='raw' cache='none' io='native'/> > <source file='/home/marius/.virt_ssd_speicher/virt_fast.img'/> > <target dev='sda' bus='scsi'/> > <boot order='2'/> > <address type='drive' controller='0' bus='0' target='0' unit='0'/> > </disk> > <disk type='file' device='disk'> > <driver name='qemu' type='raw' cache='none' io='native'/> > <source file='/media/virt/VM Speicher/win_game_v2.img'/> > <target dev='sdb' bus='scsi'/> > <address type='drive' controller='0' bus='0' target='0' unit='1'/> > </disk> > <controller type='scsi' index='0' model='virtio-scsi'> > <address type='pci' domain='0x0000' bus='0x00' slot='0x03' > function='0x0'/> > </controller> > <controller type='virtio-serial' index='0'> > <address type='pci' domain='0x0000' bus='0x00' slot='0x06' > function='0x0'/> > </controller> > <controller type='pci' index='0' model='pci-root'/> > <controller type='usb' index='0' model='ich9-ehci1'> > <address type='pci' domain='0x0000' bus='0x00' slot='0x04' > function='0x7'/> > </controller> > <controller type='usb' index='0' model='ich9-uhci1'> > <master startport='0'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x04' > function='0x0' multifunction='on'/> > </controller> > <controller type='usb' index='0' model='ich9-uhci2'> > <master startport='2'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x04' > function='0x1'/> > </controller> > <controller type='usb' index='0' model='ich9-uhci3'> > <master startport='4'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x04' > function='0x2'/> > </controller> > <interface type='network'> > <mac address='52:54:00:97:db:d2'/> > <source network='inet'/> > <model type='rtl8139'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x02' > function='0x0'/> > </interface> > <interface type='network'> > <mac address='52:54:00:bb:d0:e5'/> > <source network='host_only'/> > <model type='rtl8139'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x09' > function='0x0'/> > </interface> > <input type='mouse' bus='ps2'/> > <input type='keyboard' bus='ps2'/> > <sound model='ac97'> > <address type='pci' domain='0x0000' bus='0x00' slot='0x07' > function='0x0'/> > </sound> > <hostdev mode='subsystem' type='pci' managed='yes'> > <source> > <address domain='0x0000' bus='0x01' slot='0x00' function='0x0'/> > </source> > <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' > function='0x0'/> > </hostdev> > <memballoon model='virtio'> > <address type='pci' domain='0x0000' bus='0x00' slot='0x05' > function='0x0'/> > </memballoon> > </devices> > <qemu:commandline> > <qemu:env name='QEMU_ALSA_DAC_BUFFER_SIZE' value='512'/> > <qemu:env name='QEMU_ALSA_DAC_PERIOD_SIZE' value='170'/> > <qemu:env name='QEMU_AUDIO_DRV' value='alsa'/> > <qemu:env name='QEMU_AUDIO_DAC_FIXED_FREQ' value='44100'/> > <qemu:env name='QEMU_AUDIO_ADC_FIXED_FREQ' value='44100'/> > </qemu:commandline> > </domain> > > > Marius > > > Am 06.01.2017 um 13:24 schrieb Janusz: >> share your vm xml/qemu command, so we can see what you are doing wrong. >> >> On 01/06/2017 01:00 PM, Marius Steffen wrote: >>> Hi, >>> I'm running my VM on Arch for quite some time now, with varying success >>> on this hardware: >>> >>> - NVIDIA GTX 1070 >>> - 16 GB RAM (10 GB passed through to VM, tested with/without hugepages) >>> - i7 3770 (4 Cores, 4 Hyperthreads, various combinations tested) >>> - virtualized OS is Windows 10 Home x64 >>> >>> Arch is using my iGPU (unvirtualized), usally running KDE Plasma 5, but >>> I also tried without running any X-Session. >>> >>> As I recently noticed when upgrading my GPU from a GTX 680 to my >>> current >>> GTX 1070, there's an extremely huge performance impact compared to >>> running on native Windows. >>> When playing Just Cause 3, this was especially noteable: I've often got >>> only 40-50 FPS, compared to 75-120+ FPS in Windows 10, and my GPU being >>> used just about 20% or so in the VM. >>> >>> Is there anything I can do to a) find the cause of this bad performance >>> b) make my VM perform better? >>> >>> Greetings, >>> >>> Marius >>> >>> >>> _______________________________________________ >>> vfio-users mailing list >>> [email protected] >>> https://www.redhat.com/mailman/listinfo/vfio-users >> > _______________________________________________ vfio-users mailing list [email protected] https://www.redhat.com/mailman/listinfo/vfio-users
