nova/doc/v3/api_samples/os-hypervisors/hypervisors-statistics-resp.xml

<?xml version='1.0' encoding='UTF-8'?>
<hypervisor_statistics count="1" vcpus_used="0" local_gb_used="0" memory_mb="8192" current_workload="0" vcpus="1" running_vms="0" free_disk_gb="1028" disk_available_least="0" local_gb="1028" free_ram_mb="7680" memory_mb_used="512"/>