are you sure you weren't using host-passthrough when you were using two physical cores + hyperthreads? that would screw up topology
On 01/06/2017 11:18 PM, Marius Steffen wrote: > I already did, IIRC, using two physical cores + their associated > hyperthreads. Or do you meant using all 4 physical cores? Anyway, I'll > try isolcpus and fiddling with the options you mentioned. > Regarding the ck patches, I'm using linux-lqx(Liquorix), with MUQSS > enabled, to decrease latency (also tried linux-rt, but that didn't > change anything). > > Thanks, > > Marius > > Am 06.01.2017 um 13:36 schrieb Janusz: >> 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
