org.apache.manifoldcf.crawler.interfaces
Class PerformanceStatistics.AveragingQueue

java.lang.Object
  org.apache.manifoldcf.crawler.interfaces.PerformanceStatistics.AveragingQueue

Enclosing class:

PerformanceStatistics

protected static class PerformanceStatistics.AveragingQueue
extends java.lang.Object

This class keeps track of some depth of fetch history for an individual connection, and is used to calculate a weighted average fetches-per-minute rate.

Field Summary

protected PerformanceStatistics.AveragingRecord[]	records The internal structure of the averaging queue is a circular buffer, which gets initialized to the default value
protected int	startIndex This is the current start pointer

Constructor Summary

PerformanceStatistics.AveragingQueue()
Constructor

Method Summary

void	addRecord(int setSize, long elapsedTime) Add a record
double	calculateFetchRate() Calculate running-average fetch rate

Methods inherited from class java.lang.Object

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

Field Detail

records

protected PerformanceStatistics.AveragingRecord[] records

The internal structure of the averaging queue is a circular buffer, which gets initialized to the default value

startIndex

protected int startIndex

This is the current start pointer

Constructor Detail

PerformanceStatistics.AveragingQueue

public PerformanceStatistics.AveragingQueue()

Constructor

Method Detail

addRecord

public void addRecord(int setSize,
                      long elapsedTime)

Add a record

calculateFetchRate

public double calculateFetchRate()

Calculate running-average fetch rate