com.graphaware.runtime.monitor

Class RunningWindowAverage

java.lang.Object

com.graphaware.runtime.monitor.RunningWindowAverage

public class RunningWindowAverage
extends Object

Computes the average value per second of an ever-increasing value over the last configurable number samples or configurable time in milliseconds, whichever is smaller.

Constructor Summary

Constructors

Constructor and Description
RunningWindowAverage(int maxSamples, int maxTime) Construct a new instance.

Method Summary

Modifier and Type	Method and Description
long	getAverage() Get average the ever-increasing value as the difference between the latest sample and some sample in the past, divided by the two samples' time difference.
void	sample(long time, long value) Take a sample.

Methods inherited from class java.lang.Object

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

Constructor Detail

RunningWindowAverage

public RunningWindowAverage(int maxSamples,
                            int maxTime)

Construct a new instance.

Parameters:

maxSamples - maximum number of samples kept in the running window.

maxTime - maximum amount of time span of the window.

Method Detail

sample

public void sample(long time,
                   long value)

Take a sample.

Parameters:

time - at which the value was taken.

value - sample value.

getAverage

public long getAverage()

Get average the ever-increasing value as the difference between the latest sample and some sample in the past, divided by the two samples' time difference. The sample in the past is either maxSamples in the past, or maxTime milliseconds in the past, whichever means a smaller interval.

Returns:

average of the value as described, rounded down to the nearest integer.