kieker.monitoring.sampler.oshi.samplers

Class CPUsDetailedPercConverter

java.lang.Object

kieker.monitoring.sampler.oshi.samplers.CPUsDetailedPercConverter

public class CPUsDetailedPercConverter
extends java.lang.Object

Converts and stores CPU percentages (of i.e., User + Sys + Nice + Wait) The conversion is made by collecting the ticks at two different times, calculating the deltas and by calculating the relative values. The last calculated relative values (percentages) are stored in lastConversion. Specific metrics can be accessed by the given getters.

Since:

1.14

Author:

Matteo Sassano

Constructor Summary

Constructors

Constructor and Description
CPUsDetailedPercConverter(int coreIndex) CPUsDetailedPercConverter constructor.

Method Summary

Modifier and Type	Method and Description
void	convertToPercentage() Calculates the percentages of system, nice, user,...
double	getCombinedPerc()
int	getCoreIndex()
double	getIdlePerc()
double	getIrqPerc()
double	getNicePerc()
double	getSystemPerc()
double	getUserPerc()
double	getWaitPerc()
void	passNewProcessorLoadTicks(long[] processorLoadTicks) Stores a new measurement spot for a given CPU core.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CPUsDetailedPercConverter

public CPUsDetailedPercConverter(int coreIndex)

CPUsDetailedPercConverter constructor.

Parameters:

coreIndex - holds the CPU core index

Method Detail

passNewProcessorLoadTicks

public void passNewProcessorLoadTicks(long[] processorLoadTicks)

Stores a new measurement spot for a given CPU core. The new measurement spot must be measured at least one second after the last one. Otherwise, the invocation of this method will be ignored. In the normal case, passing new measurements leads to a shift of the last ones to processorLoadTicksT0 measurement and the new ones are stored in processorLoadTicksT1

Parameters:

processorLoadTicks - the new measurements at the current time

convertToPercentage

public void convertToPercentage()

Calculates the percentages of system, nice, user,... by utilizing the difference of two measurement spots. (processorLoadTicksT0 and processorLoadTicksT1). The second measurement spot must be measured at least one second later than the first one. If the second measurement spot is not available yet, the average percentages starting from the boot start will be calculated. If neither the first nor the second measurement spot is available, nothing will be calculated. The results are stored in lastConvesion

getSystemPerc

public double getSystemPerc()

Returns:

the system utilization of the given core.

getNicePerc

public double getNicePerc()

Returns:

the nice of the given core.

getWaitPerc

public double getWaitPerc()

Returns:

the I/O wait of the given core.

getUserPerc

public double getUserPerc()

Returns:

the user utilization of the given core.

getIrqPerc

public double getIrqPerc()

Returns:

the IRQ of the given core.

getIdlePerc

public double getIdlePerc()

Returns:

the IDLE of the given core.

getCombinedPerc

public double getCombinedPerc()

Returns:

the combined utilization of the given core.

getCoreIndex

public int getCoreIndex()

Returns:

the core index related to the converter.