can hotplug vcpus to running Windows 10 guest, but not unplug

Marc Roos M.Roos at
Mon Feb 17 13:47:52 UTC 2020

Thanks! Will compare it this weekend! 

-----Original Message-----
Cc: libvirt-ML
Subject: Re: can hotplug vcpus to running Windows 10 guest, but not 

----- On Feb 15, 2020, at 12:47 AM, Marc Roos M.Roos at 

> Would you mind sharing your xml? I have strange high host load on idle 

> windows guest/domain

<domain type='kvm'>
  <description>Pathway Studio Dietrich</description>
  <memory unit='KiB'>16146944</memory>
  <currentMemory unit='KiB'>4147456</currentMemory>
  <!-- maxMemory unit='KiB' slots='8'>16146944</maxMemory -->
  <vcpu placement='static' current='2'>4</vcpu>
    <vcpu id='0' enabled='yes' hotpluggable='no'/>
    <vcpu id='1' enabled='yes' hotpluggable='yes'/>
    <vcpu id='2' enabled='no' hotpluggable='yes'/>
    <vcpu id='3' enabled='no' hotpluggable='yes'/>
    <type arch='x86_64' machine='pc-0.15'>hvm</type>
    <boot dev='hd'/>
  <clock offset='localtime'>
    <timer name='hpet' present='no'/>
    <suspend-to-mem enabled='yes'/>
    <suspend-to-disk enabled='yes'/>
    <disk type='file' device='disk'>
      <driver name='qemu' type='raw'/>
      <source file='/mnt/ocfs2/pathway.raw'/>
      <target dev='hda' bus='ide'/>
      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <target dev='hdc' bus='ide'/>
      <address type='drive' controller='0' bus='1' target='0' unit='0'/>
    <controller type='ide' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' 
    <controller type='usb' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' 
    <controller type='pci' index='0' model='pci-root'/>
    <interface type='bridge'>
      <mac address='52:54:00:37:92:af'/>
      <source bridge='br0'/>
      <model type='e1000'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' 
    <input type='tablet' bus='usb'/>
    <input type='mouse' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes'/>
    <sound model='ac97'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' 
      <model type='cirrus' vram='9216' heads='1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' 
    <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' 
      <stats period='5'/>
Helmholtz Zentrum München

Helmholtz Zentrum Muenchen
Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH) 
Ingolstaedter Landstr. 1
85764 Neuherberg
Aufsichtsratsvorsitzende: Prof. Dr. Veronika von Messling
Geschaeftsfuehrung: Prof. Dr. med. Dr. h.c. Matthias Tschoep, Kerstin 
Registergericht: Amtsgericht Muenchen HRB 6466
USt-IdNr: DE 129521671

More information about the libvirt-users mailing list