Added missing measurements and corrected errors in doc

1. Added the missing hardware snmp metrics.
2. Added a note about some compute metrics which are generated by
rate_of_change transformer on certain hypervisor.

Change-Id: I2156466e8ca5c5ec8bc808e3fbe275b591721f8a
Closes-Bug: #1393328

doc/source/measurements.rst

@@ -124,6 +124,24 @@ network.outgoing.packets.rate    g      packet/s   iface ID  p         1, 2, 3,
    have it built in. The memory.usage meters can't be fetched without image
    balloon driver.
 
+.. note:: On libvirt/hyperV, the following meters are not generated directly
+   from the underlying hypervisor, but are generated by the 'rate_of_change'
+   transformer as defined in the default pipeline configuration.
+
+   - cpu_util
+   - disk.read.requests.rate
+   - disk.write.requests.rate
+   - disk.read.bytes.rate
+   - disk.write.bytes.rate
+   - disk.device.read.requests.rate
+   - disk.device.write.requests.rate
+   - disk.device.read.bytes.rate
+   - disk.device.write.bytes.rate
+   - network.incoming.bytes.rate
+   - network.outgoing.bytes.rate
+   - network.incoming.packets.rate
+   - network.outgoing.packets.rate
+
 Contributors are welcome to extend other virtualization backends' meters
 or complete the existing ones.
 
@@ -402,6 +420,43 @@ hardware.ipmi.node.power         Gauge       W       host ID         pollster
 hardware.ipmi.node.temperature   Gauge       C       host ID         pollster      System Current Temperature
 ===============================  ==========  ======  ==============  ============  ==========================
 
+
+Generic Host
+================================
+
+These meters are generic host metrics getting from snmp. To enable these, snmpd
+agent should be running on the host from which the metrics are gathered.
+
+========================================  =====  =========  ========  ========  ====================================================
+Meter                                     Type*  Unit       Resource  Origin    Note
+========================================  =====  =========  ========  ========  ====================================================
+hardware.cpu.load.1min                    g      process    host ID   pollster  CPU load in the past 1 minute
+hardware.cpu.load.5min                    g      process    host ID   pollster  CPU load in the past 5 minutes
+hardware.cpu.load.15min                   g      process    host ID   pollster  CPU load in the past 15 minutes
+hardware.disk.size.total                  g      B          disk ID   pollster  Total disk size
+hardware.disk.size.used                   g      B          disk ID   pollster  Used disk size
+hardware.memory.total                     g      B          host ID   pollster  Total physical memory size
+hardware.memory.used                      g      B          host ID   pollster  Used physical memory size
+hardware.memory.swap.total                g      B          host ID   pollster  Total swap space size
+hardware.memory.swap.avail                g      B          host ID   pollster  Available swap space size
+hardware.network.incoming.bytes           c      B          iface ID  pollster  Bytes received by network interface
+hardware.network.outgoing.bytes           c      B          iface ID  pollster  Bytes sent by network interface
+hardware.network.outgoing.errors          c      packet     iface ID  pollster  Sending error of network interface
+hardware.network.ip.incoming.datagrams    c      datagrams  host ID   pollster  Number of received datagrams
+hardware.network.ip.outgoing.datagrams    c      datagrams  host ID   pollster  Number of sent datagrams
+hardware.system_stats.io.incoming.blocks  c      blocks     host ID   pollster  Aggregated number of blocks received to block device
+hardware.system_stats.io.outgoing.blocks  c      blocks     host ID   pollster  Aggregated number of blocks sent to block device
+hardware.system_stats.cpu.idle            g      %          host ID   pollster  CPU idle percentage
+========================================  =====  =========  ========  ========  ====================================================
+
+::
+
+  Legend:
+  *
+  [g]: gauge
+  [c]: cumulative
+
+
 Dynamically retrieving the Meters via ceilometer client
 =======================================================