So I have the following.

  TWO Six-Core AMD Opteron 2419 EE @ 1800 = 12 cores

 

my first VM is

 

  <vcpu placement='static'>7</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'/>

  </cputune>

  <resource>

 

Unraid is left the Number 7

 

and second VM has

 

  <vcpu placement='static'>4</vcpu>

  <cputune>

    <vcpupin vcpu='0' cpuset='8'/>

    <vcpupin vcpu='1' cpuset='9'/>

    <vcpupin vcpu='2' cpuset='10'/>

    <vcpupin vcpu='3' cpuset='11'/>

  </cputune>

 

 

The issue is the first VM will only see 6 VPUs!

anyone?

I am able to pin 7 VCPUs in my Windows 8.1 VM on 6.0.1.  In the VM, task manager shows 7 virtual processors.  My processor is an Intel Xeon E5-2620v3 - 6 cores (12 w/ hyperthreading).

 

I wonder if your issue is related to pinning VCPUs from separate processors .  I would be curious to see what would happen if you tried pinning 3 VCPUs from each processor (i.e. cores 3,4,5,6,7,.

Can you post the full XML for your first VM?

Thats what i think, KVM wont let you pin from separate CPUS?

 

 

 

 

<domain type='kvm' id='12'>

  <name>Windows_NoVPN_VIrtDrivers</name>

  <uuid>3a4228d7-1e12-97e3-c4dc-7f8473c6de07</uuid>

  <metadata>

    <vmtemplate name="Custom" icon="windows.png" os="windows"/>

  </metadata>

  <memory unit='KiB'>3145728</memory>

  <currentMemory unit='KiB'>3145728</currentMemory>

  <memoryBacking>

    <nosharepages/>

    <locked/>

  </memoryBacking>

  <vcpu placement='static'>7</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'/>

  </cputune>

  <resource>

    <partition>/machine</partition>

  </resource>

  <os>

    <type arch='x86_64' machine='pc-i440fx-2.3'>hvm</type>

  </os>

  <features>

    <acpi/>

    <apic/>

    <hyperv>

      <relaxed state='on'/>

      <vapic state='on'/>

      <spinlocks state='on' retries='8191'/>

    </hyperv>

  </features>

  <cpu mode='host-passthrough'>

    <topology sockets='1' cores='7' threads='1'/>

  </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/bin/qemu-system-x86_64</emulator>

    <disk type='file' device='disk'>

      <driver name='qemu' type='raw' cache='writeback'/>

      <source file='/mnt/disk9/Windows_NoVPN_VIrtDrivers/vdisk1.img'/>

      <backingStore/>

      <target dev='hdc' bus='virtio'/>

      <boot order='1'/>

      <alias name='virtio-disk2'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>

    </disk>

    <controller type='usb' index='0'>

      <alias name='usb0'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>

    </controller>

    <controller type='pci' index='0' model='pci-root'>

      <alias name='pci.0'/>

    </controller>

    <controller type='virtio-serial' index='0'>

      <alias name='virtio-serial0'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>

    </controller>

    <interface type='bridge'>

      <mac address='52:54:00:fe:89:bb'/>

      <source bridge='br0'/>

      <target dev='vnet0'/>

      <model type='virtio'/>

      <alias name='net0'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>

    </interface>

    <serial type='pty'>

      <source path='/dev/pts/0'/>

      <target port='0'/>

      <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/Windows_NoVPN_VIrtDrivers.org.qemu.guest_agent.0'/>

      <target type='virtio' name='org.qemu.guest_agent.0' state='disconnected'/>

      <alias name='channel0'/>

      <address type='virtio-serial' controller='0' bus='0' port='1'/>

    </channel>

    <input type='tablet' bus='usb'>

      <alias name='input0'/>

    </input>

    <input type='mouse' bus='ps2'/>

    <input type='keyboard' bus='ps2'/>

    <graphics type='vnc' port='5900' autoport='yes' websocket='5700' listen='0.0.0.0' keymap='en-us'>

      <listen type='address' address='0.0.0.0'/>

    </graphics>

    <video>

      <model type='vmvga' vram='16384' heads='1'/>

      <alias name='video0'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>

    </video>

    <hostdev mode='subsystem' type='usb' managed='yes'>

      <source>

        <vendor id='0x2040'/>

        <product id='0xb123'/>

        <address bus='1' device='4'/>

      </source>

      <alias name='hostdev0'/>

    </hostdev>

    <memballoon model='virtio'>

      <alias name='balloon0'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>

    </memballoon>

  </devices>

</domain>

 

Unfortunately I don't have a dual CPU system available to test with.