Class SystemCpuUsage

Definition

Namespace:: Tizen.System

Assembly:: Tizen.System.Information.dll

The class for CPU usage information of the system.


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public class SystemCpuUsage

Inheritance: object

SystemCpuUsage

Constructors

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SystemCpuUsage()

The constructor of SystemCpuUsage class. It internally call Update() on constructing an instance.

Declaration


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public SystemCpuUsage()

Exceptions

Type	Condition
System.IO.IOException	Thrown when an I/O error occurs while reading from the system.
System.NotSupportedException	Thrown when this system does not store the current CPU frequency.

Properties

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IoWait

Time waiting for I/O completion (Percent). To get the latest value, it is recommended to call Update() before it.

Declaration


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public double IoWait { get; }

Property Value

Type	Description
double

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Nice

Running time of niced user processes (Percent). To get the latest value, it is recommended to call Update() before it.

Declaration


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public double Nice { get; }

Property Value

Type	Description
double

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ProcessorCount

The number of processors.

Declaration


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public int ProcessorCount { get; }

Property Value

Type	Description
int

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System

Running time of kernel processes (Percent). To get the latest value, it is recommended to call Update() before it.

Declaration


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public double System { get; }

Property Value

Type	Description
double

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User

Running time of un-niced user processes (Percent). To get the latest value, it is recommended to call Update() before it.

Declaration


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public double User { get; }

Property Value

Type	Description
double

Methods

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GetCurrentFrequency(int)

Gets the current frequency of the processor. To get the latest value, it is recommended to call Update() before it.

Declaration


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public int GetCurrentFrequency(int coreId)

Parameters

Type	Name	Description
int	coreId	The index (from 0) of the CPU core that you want to know the frequency of.

Returns

Type	Description
int	The current frequency(MHz) of processor.

Exceptions

Type	Condition
System.ArgumentException	Thrown when the `coreId` is invalid.

View Source

GetMaxFrequency(int)

Gets the max frequency of the processor. To get the latest value, it is recommended to call Update() before it.

Declaration


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public int GetMaxFrequency(int coreId)

Parameters

Type	Name	Description
int	coreId	The index (from 0) of CPU core that you want to know the frequency of.

Returns

Type	Description
int	The max frequency(MHz) of processor.

Exceptions

Type	Condition
System.ArgumentException	Thrown when the `coreId` is invalid.

View Source

Update()

Update the system CPU usage information to the latest.

Declaration


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public void Update()

Exceptions

Type	Condition
System.IO.IOException	Thrown when an I/O error occurs while reading from the system.
System.NotSupportedException	Thrown when this system does not store the current CPU frequency.