Package org.apache.flink.runtime.throughput

Class BufferSizeEMA

java.lang.Object

org.apache.flink.runtime.throughput.BufferSizeEMA

public class BufferSizeEMA
extends Object

Implementation of 'Exponential moving average' algorithm.

Constructor Summary

Constructors

Constructor	Description
BufferSizeEMA(int startingBufferSize, int maxBufferSize, int minBufferSize, long numberOfSamples)
BufferSizeEMA(int maxBufferSize, int minBufferSize, long numberOfSamples)

Method Summary

Modifier and Type	Method	Description
int	calculateBufferSize(long totalBufferSizeInBytes, int totalBuffers)	Calculating the buffer size over total possible buffers size and number of buffers in use.

Methods inherited from class java.lang.Object

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

Constructor Detail

BufferSizeEMA

public BufferSizeEMA(int maxBufferSize,
                     int minBufferSize,
                     long numberOfSamples)

BufferSizeEMA

public BufferSizeEMA(int startingBufferSize,
                     int maxBufferSize,
                     int minBufferSize,
                     long numberOfSamples)

Method Detail

calculateBufferSize

public int calculateBufferSize(long totalBufferSizeInBytes,
                               int totalBuffers)

Calculating the buffer size over total possible buffers size and number of buffers in use.

Parameters:

totalBufferSizeInBytes - Total buffers size.

totalBuffers - Total number of buffers in use.

Returns:

Throughput calculated according to implemented algorithm.