org.apache.reef.wake.metrics

Class EWMA

java.lang.Object

org.apache.reef.wake.metrics.EWMA

public class EWMA
extends Object

Exponentially weighted moving average

Constructor Summary

Constructors

Constructor and Description
EWMA(double alpha, long interval, TimeUnit intervalUnit) Constructs an EWMA object

Method Summary

Methods

Modifier and Type	Method and Description
double	getRate(TimeUnit rateUnit) Gets the rate
void	tick() Updates the rate
void	update(long n) Updates the EWMA with a new value

Methods inherited from class java.lang.Object

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

Constructor Detail

EWMA

public EWMA(double alpha,
    long interval,
    TimeUnit intervalUnit)

Constructs an EWMA object

Parameters:

alpha -

interval -

intervalUnit -

Method Detail

update

public void update(long n)

Updates the EWMA with a new value

Parameters:

n - the new value

tick

public void tick()

Updates the rate

getRate

public double getRate(TimeUnit rateUnit)

Gets the rate

Parameters:

rateUnit - the unit of the rate

Returns:

the rate