Hi, We are implementing feature called CPU separation in the platform. So, guest VMs will have dedicated cores allocated using cgroups (cgroups hierachy related VMs managed by libvirt). virsh cpu-stats command is not working in our platform : virsh # cpu-stats test_vm error: Failed to virDomainGetCPUStats() error: Requested operation is not valid: cgroup CPUACCT controller is not mounted It should show info like this. $ virsh cpu-stats test_vm CPU0: cpu_time 0.025812184 seconds vcpu_time 0.025812184 seconds CPU1: cpu_time 4.893484927 seconds vcpu_time 4.893484927 seconds Total: cpu_time 4.924620941 seconds user_time 1.060000000 seconds system_time 3.050000000 seconds We are suspecting some issue in virsh when it is trying to find to where that cgroups is mounted in a system (default in ubuntu is /sys/fs/cgroup/cpuset/libvirt/, but in our platform uses /dev/cgroup_xxx). Find /proc/cgroups and /proc/mounts log below: ================================== # cat /proc/cgroups #subsys_name hierarchy num_cgroups enabled cpuset 0 1 1 ns 0 1 1 cpu 1 3 1 cpuacct 0 1 1 memory 2 1 1 freezer 0 1 1 net_cls 0 1 1 blkio 0 1 1 # cat /proc/mounts cpu /dev/cgroup_cpu cgroup rw,relatime,cpu 0 0 memory /dev/cgroup_mem cgroup rw,relatime,memory 0 0 Can you please help us in this regard to enable this command in our platform, Thanks in advance !!! Regards, Anusha