Msvm_BaseMetricDefinition class

Represents the definition aspects of a metric. The Msvm_BaseMetricDefinition class should be associated with the CIM_ManagedElements to which it applies.

The following syntax is simplified Managed Object Format (MOF) code, and it includes all of the inherited properties.

Syntax

[Dynamic, Provider("VmmsWmiInstanceAndMethodProvider"), AMENDMENT]
class Msvm_BaseMetricDefinition : CIM_BaseMetricDefinition
{
  string  InstanceID;
  string  Caption;
  string  Description;
  string  ElementName;
  string  Id;
  string  Name;
  uint16  DataType;
  uint16  Calculable;
  string  Units;
  string  BreakdownDimensions[];
  boolean IsContinuous;
  uint16  ChangeType;
  uint16  TimeScope;
  uint16  GatheringType;
  string  ProgrammaticUnits;
};

Members

The Msvm_BaseMetricDefinition class has these types of members:

Properties

The Msvm_BaseMetricDefinition class has these properties.

BreakdownDimensions

Data type: string array

Access type: Read-only

Defines one or more strings that can be used to refine (break down) queries against the metric values along a certain dimension. An example is a transaction name, allowing the break down of the total value for all transactions into a set of values, one for each transaction name. Other examples might be application system or user group name. The strings are free format and should be meaningful to the end users of the metric data. The strings indicate which break down dimensions are supported for this metric definition, by the underlying instrumentation. This property is inherited from CIM_BaseMetricDefinition.

Calculable

Data type: uint16

Access type: Read-only

Describes the characteristics of the metric for purposes of performing calculations. This property is inherited from CIM_BaseMetricDefinition. This may be Null or one of the following values.

Value Meaning
Non-calculable
1
The value cannot be calculated. For example, a string.
Summable
2
The value can be summed over many instances. For example, if each backup job is a unit of work, and each job backs up 27,000 files on average, then 100 backup jobs processed 2,700,000 files.
Non-summable
3
This value cannot be summed over many instances. An example would be a metric that measures the queue length when a job arrives at a server. If each job is a unit of work, and the average queue length when each job arrives is 33, it does not make sense to say that the queue length for 100 jobs is 3300. It does make sense to say that the mean is 33.

Caption

Data type: string

Access type: Read-only

A short description of the object. This property is inherited from CIM_ManagedElement.

ChangeType

Data type: uint16

Access type: Read-only

Indicates how the metric value changes, in the form of typical combinations of finer grain attributes such as direction change, minimum and maximum values, and wrapping semantics. This property is inherited from CIM_BaseMetricDefinition.

Value Meaning
Unknown
0
The metric designer did not qualify the ChangeType..
N/A
2
If the IsContinuous property is "false", ChangeType does not make sense and must be set to "N/A".
Counter
3
The metric is a counter metric. These have nonnegative integer values that increase until reaching the maximum representable number and then wrap around and start increasing from 0.
Gauge
4
The metric is a gauge metric. These have integer or float values that can increase and decrease arbitrarily.
DMTF Reserved
5..32767
Vendor Reserved
32768..65535
Vendors may extend the ChangeType property in the vendor reserved range.

DataType

Data type: uint16

Access type: Read-only

The data type of the metric. This property is inherited from CIM_BaseMetricDefinition.

boolean (1)

char16 (2)

datetime (3)

real32 (4)

real64 (5)

sint16 (6)

sint32 (7)

sint64 (8)

sint8 (9)

string (10)

uint16 (11)

uint32 (12)

uint64 (13)

uint8 (14 )

Description

Data type: string

Access type: Read-only

A description of the object. This property is inherited from CIM_ManagedElement.

ElementName

Data type: string

Access type: Read-only

A display name for the object. This property is inherited from CIM_ManagedElement.

GatheringType

Data type: uint16

Access type: Read-only

Indicates how the metric values are gathered by the underlying instrumentation. This allows the client application to choose the right metric for the purpose. This property is inherited from CIM_BaseMetricDefinition. This may be Null or one of the following values.

Value Meaning
Unknown
0
The gathering type is not known.
OnChange
2
The metric values get updated immediately when the values inside of the measured resource change.
Periodic
3
The metric values get updated periodically. For instance, to a client application, a metric value that applies to the current time will appear constant during each gathering interval, and then jumps to the new value at the end of each gathering interval.
OnRequest
4
The metric value is determined each time a client application reads it.
DMTF Reserved
5..32767
Vendor Reserved
32768..65535

Id

Data type: string

Access type: Read-only

Qualifiers: Key

A string that uniquely identifies the metric definition. This property is inherited from CIM_BaseMetricDefinition.

InstanceID

Data type: string

Access type: Read-only

Qualifiers: Key

A string that uniquely identifies an instance of this class. This property is inherited from CIM_ManagedElement.

IsContinuous

Data type: boolean

Access type: Read-only

Indicates whether the metric value is continuous or scalar. Performance metrics are an example of a continuous metric. Examples of scalar metrics include error codes or operational states. Continuous metrics can be compared by using the "greater than" relation. This property is inherited from CIM_BaseMetricDefinition.

Name

Data type: string

Access type: Read-only

The name of the metric. This property is inherited from CIM_BaseMetricDefinition.

ProgrammaticUnits

Data type: string

Access type: Read-only

Identifies the specific units of a value. The value of this property will be a legal value of the Programmatic Units qualifier as defined in Appendix C.1 of DSP0004 V2.4 or later. This property is inherited from CIM_BaseMetricDefinition.

TimeScope

Data type: uint16

Access type: Read-only

Indicates the time scope to which the metric value applies. This property is inherited from CIM_BaseMetricDefinition.

Value Meaning
Unknown
0
The time scope was not qualified by the metric designer or is unknown to the provider.
Point
2
The metric applies to a point in time. On the corresponding Msvm_BaseMetricValue instances, the TimeStamp property specifies the point in time, and the Duration property is always 0.
Interval
3
The metric applies to a time interval. On the corresponding Msvm_BaseMetricValue instances, the TimeStamp property specifies the end of the time interval, and the Duration property specifies its duration.
StartupInterval
4
The metric applies to a time interval that began at the startup of the measured resource (that is, the ManagedElement associated by MetricDefForMe). On the corresponding Msvm_BaseMetricValue instances, the TimeStamp property specifies the end of the time interval. If the Duration property is 0, this indicates that the startup time of the measured resource is unknown. Otherwise, Duration specifies the duration between startup of the resource and TimeStamp.
DMTF Reserved
5..32767
Vendor Reserved
32768..65535

Units

Data type: string

Access type: Read-only

Identifies the specific units of a value, for example, "megabytes". This property is inherited from CIM_BaseMetricDefinition.

Requirements

Minimum supported client
Windows 8 [desktop apps only]
Minimum supported server
Windows Server 2012 [desktop apps only]
Namespace
Root\Virtualization\V2
MOF
WindowsVirtualization.V2.mof
DLL
Vmms.exe