Hi, As told in "Control Groups Resource Management" libvirt page : Legacy cgroups layout Prior to libvirt 1.0.5, the cgroups layout created by libvirt was different from that described above, and did not allow for administrator customization. Libvirt used a fixed, 3-level hierarchy libvirt/{qemu,lxc}/$VMNAME which was rooted at the point in the hierarchy where libvirtd itself was located. So if libvirtd was placed at /system/libvirtd.service by systemd, the groups for each virtual machine / container would be located at /system/libvirtd.service/libvirt/{qemu,lxc}/$VMNAME. In addition to this, the QEMU drivers further child groups for each vCPU thread and the emulator thread(s). This leads to a hierarchy that looked like I'm trying to retrieve this layout : $ROOT | +- system | +- libvirtd.service | +- libvirt | +- qemu | | | +- vm1 | | | | | +- emulator | | +- vcpu0 | | +- vcpu1 | | | +- vm2 | | | | | +- emulator | | +- vcpu0 | | +- vcpu1 | | | +- vm3 | | | +- emulator | +- vcpu0 | +- vcpu1 How may I find where systemd has placed libvirtd ? I use libvirt 0.10.2 on a RHEL6 2.6.32-431.el6.x86_64 Thx for help. J.P. Ribeauville P: +33.(0).1.47.17.20.49 . Puteaux 3 Etage 5 Bureau 4 jpribeauville@axway.com<mailto:jpribeauville@axway.com> http://www.axway.com<http://www.axway.com/> P Pensez à l'environnement avant d'imprimer.