diff --git a/doc/source/advanced_deployment/introspection_data.rst b/doc/source/advanced_deployment/introspection_data.rst
index 7133099f..974e245f 100644
--- a/doc/source/advanced_deployment/introspection_data.rst
+++ b/doc/source/advanced_deployment/introspection_data.rst
@@ -25,7 +25,8 @@ Accessing raw additional data
 
 Extra hardware data can be collected using the python-hardware_ library. If
 you have enabled this, by setting ``inspection_extras`` to ``True`` in your
-``undercloud.conf``, then even more data is available.
+``undercloud.conf`` (enabled by default starting with the Mitaka release),
+then even more data is available.
 
 The command above will display it in a structured format under the ``extra``
 key in the resulting JSON object. This format is suitable for using in
@@ -56,5 +57,116 @@ and use that to collect a list of node mac addresses::
       do cat $f | jq -r 'map(select(.[0]=="network" and .[2]=="serial"))';
     done
 
+Running benchmarks
+~~~~~~~~~~~~~~~~~~
+
+Benchmarks for CPU, memory and hard drive can be run during the introspection
+process. However, they are time consuming, and thus are disabled by default.
+To enable benchmarks set ``inspection_runbench`` to ``true`` in the
+``undercloud.conf`` (also requires ``inspection_extras`` set to ``true``),
+then (re)run ``openstack undercloud install``.
+
+Extra data examples
+~~~~~~~~~~~~~~~~~~~
+
+Here is an example of CPU extra data, including benchmark results::
+
+    $ openstack baremetal introspection data save <UUID> | jq '.extra.cpu'
+    {
+        "physical": {
+            "number": 1
+        },
+        "logical": {
+            "number": 1,
+            "loops_per_sec": 636
+        },
+        "logical_0": {
+            "bandwidth_4K": 3657,
+            "bandwidth_1G": 6775,
+            "bandwidth_128M": 8353,
+            "bandwidth_2G": 7221,
+            "loops_per_sec": 612,
+            "bogomips": "6983.57",
+            "bandwidth_1M": 10781,
+            "bandwidth_16M": 9808,
+            "bandwidth_1K": 1204,
+            "cache_size": "4096KB"
+        },
+        "physical_0":
+        {
+            "physid": 400,
+            "product": "QEMU Virtual CPU version 2.3.0",
+            "enabled_cores": 1,
+            "vendor": "Intel Corp.",
+            "threads": 1,
+            "flags": "fpu fpu_exception wp de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx x86-64 rep_good nopl pni cx16 x2apic hypervisor lahf_lm abm",
+            "version": "RHEL 7.2.0 PC (i440FX + PIIX, 1996)",
+            "frequency": 2e+09,
+            "cores": 1
+        }
+    }
+
+Here is an example of disk extra data, including benchmark results::
+
+    $ openstack baremetal introspection data save <UUID> | jq '.extra.disk'
+    {
+        "logical": {
+            "count": 1
+        },
+        "sda": {
+            "SMART/Raw_Read_Error_Rate(1)/value": 100,
+            "SMART/Spin_Up_Time(3)/thresh": 0,
+            "model": "QEMU HARDDISK",
+            "SMART/Power_Cycle_Count(12)/when_failed": "NEVER",
+            "SMART/Reallocated_Sector_Ct(5)/worst": 100,
+            "SMART/Power_Cycle_Count(12)/raw": 0,
+            "standalone_read_1M_KBps": 1222758,
+            "SMART/Power_On_Hours(9)/worst": 100,
+            "Read Cache Disable": 0,
+            "SMART/Power_On_Hours(9)/raw": 1,
+            "rotational": 1,
+            "SMART/Start_Stop_Count(4)/thresh": 20,
+            "SMART/Start_Stop_Count(4)/raw": 100,
+            "SMART/Power_Cycle_Count(12)/thresh": 0,
+            "standalone_randread_4k_KBps": 52491,
+            "physical_block_size": 512,
+            "SMART/Reallocated_Sector_Ct(5)/value": 100,
+            "SMART/Reallocated_Sector_Ct(5)/when_failed": "NEVER",
+            "SMART/Power_Cycle_Count(12)/value": 100,
+            "SMART/Spin_Up_Time(3)/when_failed": "NEVER",
+            "size": 44,
+            "SMART/Power_On_Hours(9)/thresh": 0,
+            "id": "ata-QEMU_HARDDISK_QM00005",
+            "SMART/Reallocated_Sector_Ct(5)/raw": 0,
+            "SMART/Raw_Read_Error_Rate(1)/when_failed": "NEVER",
+            "SMART/Airflow_Temperature_Cel(190)/worst": 69,
+            "SMART/Airflow_Temperature_Cel(190)/when_failed": "NEVER",
+            "SMART/Spin_Up_Time(3)/value": 100,
+            "standalone_read_1M_IOps": 1191,
+            "SMART/Airflow_Temperature_Cel(190)/thresh": 50,
+            "SMART/Power_On_Hours(9)/when_failed": "NEVER",
+            "SMART/firmware_version": "2.3.0",
+            "optimal_io_size": 0,
+            "SMART/Raw_Read_Error_Rate(1)/thresh": 6,
+            "SMART/Raw_Read_Error_Rate(1)/raw": 0,
+            "SMART/Raw_Read_Error_Rate(1)/worst": 100,
+            "SMART/Power_Cycle_Count(12)/worst": 100,
+            "standalone_randread_4k_IOps": 13119,
+            "rev": 0,
+            "SMART/Start_Stop_Count(4)/worst": 100,
+            "SMART/Start_Stop_Count(4)/when_failed": "NEVER",
+            "SMART/Spin_Up_Time(3)/worst": 100,
+            "SMART/Reallocated_Sector_Ct(5)/thresh": 36,
+            "SMART/device_model": "QEMU HARDDISK",
+            "SMART/Airflow_Temperature_Cel(190)/raw": " 31 (Min/Max 31/31)",
+            "SMART/Start_Stop_Count(4)/value": 100,
+            "SMART/Spin_Up_Time(3)/raw": 16,
+            "Write Cache Enable": 1,
+            "vendor": "ATA",
+            "SMART/serial_number": "QM00005",
+            "SMART/Power_On_Hours(9)/value": 100,
+            "SMART/Airflow_Temperature_Cel(190)/value": 69
+        }
+    }
 
 .. _python-hardware: https://github.com/redhat-cip/hardware