Guvidu

I found your thread while discovering this issue myself. My setup is cpu i9-12900k, Unraid version 6.12.13 Topology attached. If i add more then 3 cores to my windows 11 vm i get bad stutters whenever i do anything heavy (like compiling) (funny enough, there is no stutter if i run cinebench) Here is my xml <?xml version='1.0' encoding='UTF-8'?> <domain type='kvm' id='15'> <name>Windows 11</name> <uuid>77fe918b-c4ee-45b5-902f-b00928b24900</uuid> <metadata> <vmtemplate xmlns="unraid" name="Windows 11" icon="windows11.png" os="windowstpm"/> </metadata> <memory unit='KiB'>17301504</memory> <currentMemory unit='KiB'>17301504</currentMemory> <memoryBacking> <nosharepages/> <locked/> </memoryBacking> <vcpu placement='static'>6</vcpu> <cputune> <vcpupin vcpu='0' cpuset='2'/> <vcpupin vcpu='1' cpuset='3'/> <vcpupin vcpu='2' cpuset='4'/> <vcpupin vcpu='3' cpuset='5'/> <vcpupin vcpu='4' cpuset='6'/> <vcpupin vcpu='5' cpuset='7'/> <emulatorpin cpuset='0-1'/> </cputune> <resource> <partition>/machine</partition> </resource> <os> <type arch='x86_64' machine='pc-q35-7.1'>hvm</type> <loader readonly='yes' type='pflash'>/mnt/cache/appdata/VM/ovmf/ovmf-x64/OVMF_CODE-pure-efi-tpm.fd</loader> <nvram>/etc/libvirt/qemu/nvram/77fe918b-c4ee-45b5-902f-b00928b24900_VARS-pure-efi-tpm.fd</nvram> <smbios mode='host'/> </os> <features> <acpi/> <apic/> <hyperv mode='custom'> <relaxed state='on'/> <vapic state='on'/> <spinlocks state='on' retries='8191'/> <vendor_id state='on' value='none'/> </hyperv> </features> <cpu mode='host-passthrough' check='none' migratable='on'> <topology sockets='1' dies='1' cores='3' threads='2'/> </cpu> <clock offset='localtime'> <timer name='hypervclock' present='yes'/> <timer name='hpet' present='no'/> </clock> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/local/sbin/qemu</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='writeback'/> <source file='/mnt/cache/appdata/VM/domains/Windows 11/vdisk1.img' index='4'/> <backingStore/> <target dev='hdc' bus='virtio'/> <serial>vdisk1</serial> <boot order='2'/> <alias name='virtio-disk2'/> <address type='pci' domain='0x0000' bus='0x04' slot='0x00' function='0x0'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <source file='/mnt/cache/appdata/VM/isos/Win11_23H2_EnglishInternational_x64v2.iso' index='3'/> <backingStore/> <target dev='hda' bus='sata'/> <readonly/> <boot order='1'/> <alias name='sata0-0-0'/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <source file='/mnt/cache/appdata/VM/isos/virtio-win-0.1.262.iso' index='2'/> <backingStore/> <target dev='hdb' bus='sata'/> <readonly/> <alias name='sata0-0-1'/> <address type='drive' controller='0' bus='0' target='0' unit='1'/> </disk> <disk type='block' device='disk'> <driver name='qemu' type='raw' cache='writeback'/> <source dev='/dev/disk/by-id/ata-APPLE_SSD_TS128C_31DS10JZTLMZ' index='1'/> <backingStore/> <target dev='hdd' bus='sata'/> <alias name='sata7-0-0'/> <address type='drive' controller='7' bus='0' target='0' unit='0'/> </disk> <controller type='usb' index='0' model='qemu-xhci' ports='15'> <alias name='usb'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> </controller> <controller type='sata' index='0'> <alias name='ide'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/> </controller> <controller type='sata' index='1'> <alias name='sata1'/> <address type='pci' domain='0x0000' bus='0x02' slot='0x02' function='0x0'/> </controller> <controller type='sata' index='2'> <alias name='sata2'/> <address type='pci' domain='0x0000' bus='0x02' slot='0x03' function='0x0'/> </controller> <controller type='sata' index='3'> <alias name='sata3'/> <address type='pci' domain='0x0000' bus='0x02' slot='0x04' function='0x0'/> </controller> <controller type='sata' index='4'> <alias name='sata4'/> <address type='pci' domain='0x0000' bus='0x02' slot='0x05' function='0x0'/> </controller> <controller type='sata' index='5'> <alias name='sata5'/> <address type='pci' domain='0x0000' bus='0x02' slot='0x06' function='0x0'/> </controller> <controller type='sata' index='6'> <alias name='sata6'/> <address type='pci' domain='0x0000' bus='0x02' slot='0x07' function='0x0'/> </controller> <controller type='sata' index='7'> <alias name='sata7'/> <address type='pci' domain='0x0000' bus='0x02' slot='0x08' function='0x0'/> </controller> <controller type='pci' index='0' model='pcie-root'> <alias name='pcie.0'/> </controller> <controller type='pci' index='1' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='1' port='0x8'/> <alias name='pci.1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0' multifunction='on'/> </controller> <controller type='pci' index='2' model='pcie-to-pci-bridge'> <model name='pcie-pci-bridge'/> <alias name='pci.2'/> <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/> </controller> <controller type='pci' index='3' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='3' port='0x9'/> <alias name='pci.3'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <controller type='pci' index='4' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='4' port='0xa'/> <alias name='pci.4'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> </controller> <controller type='pci' index='5' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='5' port='0xb'/> <alias name='pci.5'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x3'/> </controller> <controller type='pci' index='6' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='6' port='0xc'/> <alias name='pci.6'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x4'/> </controller> <controller type='pci' index='7' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='7' port='0xd'/> <alias name='pci.7'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x5'/> </controller> <controller type='virtio-serial' index='0'> <alias name='virtio-serial0'/> <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0'/> </controller> <interface type='bridge'> <mac address='52:54:00:51:5e:71'/> <source bridge='br0'/> <target dev='vnet13'/> <model type='virtio'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x0'/> </interface> <serial type='pty'> <source path='/dev/pts/0'/> <target type='isa-serial' port='0'> <model name='isa-serial'/> </target> <alias name='serial0'/> </serial> <console type='pty' tty='/dev/pts/0'> <source path='/dev/pts/0'/> <target type='serial' port='0'/> <alias name='serial0'/> </console> <channel type='unix'> <source mode='bind' path='/var/lib/libvirt/qemu/channel/target/domain-15-Windows 11/org.qemu.guest_agent.0'/> <target type='virtio' name='org.qemu.guest_agent.0' state='connected'/> <alias name='channel0'/> <address type='virtio-serial' controller='0' bus='0' port='1'/> </channel> <input type='mouse' bus='ps2'> <alias name='input0'/> </input> <input type='keyboard' bus='ps2'> <alias name='input1'/> </input> <tpm model='tpm-tis'> <backend type='emulator' version='2.0' persistent_state='yes'/> <alias name='tpm0'/> </tpm> <audio id='1' type='none'/> <hostdev mode='subsystem' type='pci' managed='yes'> <driver name='vfio'/> <source> <address domain='0x0000' bus='0x01' slot='0x00' function='0x0'/> </source> <alias name='hostdev0'/> <rom file='/mnt/cache/appdata/VM/bios-dump/amd_radeon_rx_550_Lexa.rom'/> <address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x0' multifunction='on'/> </hostdev> <hostdev mode='subsystem' type='pci' managed='yes'> <driver name='vfio'/> <source> <address domain='0x0000' bus='0x01' slot='0x00' function='0x1'/> </source> <alias name='hostdev1'/> <address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x1'/> </hostdev> <hostdev mode='subsystem' type='usb' managed='no'> <source startupPolicy='optional'> <vendor id='0x046d'/> <product id='0xc52b'/> <address bus='1' device='10'/> </source> <alias name='hostdev2'/> <address type='usb' bus='0' port='1'/> </hostdev> <memballoon model='none'/> </devices> <seclabel type='dynamic' model='dac' relabel='yes'> <label>+0:+100</label> <imagelabel>+0:+100</imagelabel> </seclabel> </domain> Not sure how to fix this, but i would really like to give more cores to the VM. If anybody finds a solution, please reply.