Win32_PerfRawData class
The performance counter class Win32_PerfRawData is the abstract base class for all concrete raw performance counter classes. To appear in System Monitor, performance counter classes must be added to the root\cimv2 namespace and derived from Win32_PerfRawData. Data in these classes are provided by the high-performance Performance Counter Provider.
The following properties are inherited when a class is derived from Win32_PerfRawData:
- Timestamp_PerfTime
- Timestamp_Sys100NS
- Timestamp_Object
- Frequency_PerfTime
- Frequency_Sys100NS
- Frequency_Object
In each case, the properties must be filled out by the provider or the class cannot be displayed in System Monitor. These properties are used to compute counter type formulas by consumers of performance data.
The following syntax is simplified from MOF code and shows all inherited properties.
Syntax
class Win32_PerfRawData : Win32_Perf
{
string Caption;
string Description;
string Name;
uint64 Frequency_Object;
uint64 Frequency_Sys100NS;
uint64 Timestamp_Object;
uint64 Timestamp_Sys100NS;
uint64 Frequency_PerfTime;
uint64 Timestamp_PerfTime;
};
Members
The Win32_PerfRawData class has these types of members:
Properties
The Win32_PerfRawData class has these properties.
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Caption
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Data type: string
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Access type: Read-only
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Qualifiers: MaxLen (64)
Short textual description for the statistic or metric.
This property is inherited from CIM_StatisticalInformation.
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Description
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Data type: string
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Access type: Read-only
Textual description of the statistic or metric.
This property is inherited from CIM_StatisticalInformation.
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Frequency_Object
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Data type: uint64
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Access type: Read-only
Frequency in ticks per second of the Timestamp_Object property. When sub-classed, the provider defines this property.
For more information about using uint64 values in scripts, see Scripting in WMI.
This property is inherited from Win32_Perf.
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Frequency_PerfTime
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Data type: uint64
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Access type: Read-only
Frequency, in ticks per second, of the Timestamp_Perftime property. A value could be obtained by calling the Windows function QueryPerformanceCounter. This property is inherited from Win32_Perf.
This property is inherited from Win32_Perf
For more information about using uint64 values in scripts, see Scripting in WMI.
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Frequency_Sys100NS
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Data type: uint64
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Access type: Read-only
Frequency in ticks per second of the Timestamp_Sys100NS property (10000000).
For more information about using uint64 values in scripts, see Scripting in WMI.
This property is inherited from Win32_Perf.
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Name
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Data type: string
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Access type: Read-only
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Qualifiers: MaxLen (256)
Label by which the statistic or metric is known. When subclassed, this property can be overridden to be a key property.
This property is inherited from CIM_StatisticalInformation.
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Timestamp_Object
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Data type: uint64
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Access type: Read-only
Object-defined timestamp. The provider defines his property.
For more information about using uint64 values in scripts, see Scripting in WMI.
This property is inherited from Win32_Perf.
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Timestamp_PerfTime
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Data type: uint64
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Access type: Read-only
High-performance counter timestamp. A value could be obtained by calling the Windows function QueryPerformanceCounter. This property is inherited from Win32_Perf.
This property is inherited from Win32_Perf
For more information about using uint64 values in scripts, see Scripting in WMI.
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Timestamp_Sys100NS
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Data type: uint64
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Access type: Read-only
Timestamp value in 100 nanosecond units.
For more information about using uint64 values in scripts, see Scripting in WMI.
This property is inherited from Win32_Perf.
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Remarks
The Win32_PerfRawData class is derived from Win32_Perf, which is derived from CIM_StatisticalInformation.
All classes derived from Win32_Perf are designed to be used with a refresher object. For more information about how to create and use a refresher object in the C++ programming language, see Accessing Performance Data in C++. For more information about how to create and use a refresher object in a script programming language, see Refreshing WMI Data in Scripts.
Requirements
| Minimum supported client |
Windows Vista |
| Minimum supported server |
Windows Server 2008 |
| Namespace |
Root\WMI |
| MOF |
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| DLL |
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