{
   "tenant_usage":{
      "total_memory_mb_usage":0.000128,
      "total_vcpus_usage":2.5e-07,
      "total_hours":2.5e-07,
      "tenant_id":"56edac5883964a5285b423c73f2bf7c3",
      "stop":"2012-05-10 20:04:55.923954",
      "server_usages":[
         {
            "hours":2.5e-07,
            "uptime":622,
            "local_gb":0,
            "ended_at":null,
            "name":"abc",
            "tenant_id":"56edac5883964a5285b423c73f2bf7c3",
            "vcpus":1,
            "memory_mb":512,
            "state":"active",
            "flavor":"m1.tiny",
            "started_at":"2012-05-10 19:54:33"
         }
      ],
      "start":"2012-05-10 20:04:55.923864",
      "total_local_gb_usage":0.0
   }
}




stack@devstack:~/nova$ nova usage-list
Usage from 2012-04-12 to 2012-05-11:
+----------------------------------+-----------+--------------+-----------+---------------+
|            Tenant ID             | Instances | RAM MB-Hours | CPU Hours | Disk GB-Hours |
+----------------------------------+-----------+--------------+-----------+---------------+
| 56edac5883964a5285b423c73f2bf7c3 | 2         | 10351.12     | 20.22     | 0.00          |
+----------------------------------+-----------+--------------+-----------+---------------+