MySQL Connector/J 9.2.0 · com.mysql.cj.log.BaseMetricsHolder

Field Summary

Modifier and Type	Field and Description
private static final int	HISTOGRAM_BUCKETS
private long	longestQueryTimeMs If gathering metrics, what was the execution time of the longest query so far ?
private long	maximumNumberTablesAccessed
private long	minimumNumberTablesAccessed
private long	numberOfPreparedExecutes When was the last time we reported metrics?
private long	numberOfPrepares
private long	numberOfQueriesIssued
private long	numberOfResultSetsCreated
private long[]	numTablesMetricsHistBreakpoints
private int[]	numTablesMetricsHistCounts
private long[]	oldHistBreakpoints
private int[]	oldHistCounts
private long[]	perfMetricsHistBreakpoints
private int[]	perfMetricsHistCounts
private long	queryTimeCount
private double	queryTimeMean
private double	queryTimeSum
private double	queryTimeSumSquares
private long	shortestQueryTimeMs
private double	totalQueryTimeMs

Constructor Summary

Access	Constructor and Description
public	BaseMetricsHolder()

Method Summary

Modifier and Type	Method and Description
private void	addToHistogram(int[] histogramCounts, long[] histogramBreakpoints, long value, int numberOfTimes, long currentLowerBound, long currentUpperBound)
private void	addToPerformanceHistogram(long value, int numberOfTimes)
private void	addToTablesAccessedHistogram(long value, int numberOfTimes)
public boolean	Returns: true if millisOrNanos is outside the 99th percentile? checkAbonormallyLongQuery(long query execution time millisOrNanos) Update statistics that allows the driver to determine if a query is slow enough to be logged, and return the estimation result for millisOrNanos value.
private void	checkAndCreatePerformanceHistogram()
private void	checkAndCreateTablesAccessedHistogram()
private void	createInitialHistogram(long[] breakpoints, long lowerBound, long upperBound)
public void	incrementNumberOfPreparedExecutes()
public void	incrementNumberOfPrepares()
public void	incrementNumberOfResultSetsCreated()
public void	registerQueryExecutionTime(long query execution time in milliseconds queryTimeMs)
private void	repartitionHistogram(int[] histCounts, long[] histBreakpoints, long currentLowerBound, long currentUpperBound)
private void	repartitionPerformanceHistogram()
private void	repartitionTablesAccessedHistogram()
public void	reportMetrics(Log log)
public void	reportNumberOfTablesAccessed(int numTablesAccessed) **
public void	reportQueryTime(long millisOrNanos)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

HISTOGRAM_BUCKETS	back to summary
private static final int HISTOGRAM_BUCKETS

longestQueryTimeMs	back to summary
private long longestQueryTimeMs If gathering metrics, what was the execution time of the longest query so far ?

maximumNumberTablesAccessed	back to summary
private long maximumNumberTablesAccessed

minimumNumberTablesAccessed	back to summary
private long minimumNumberTablesAccessed

numberOfPreparedExecutes	back to summary
private long numberOfPreparedExecutes When was the last time we reported metrics?

numberOfPrepares	back to summary
private long numberOfPrepares

numberOfQueriesIssued	back to summary
private long numberOfQueriesIssued

numberOfResultSetsCreated	back to summary
private long numberOfResultSetsCreated

numTablesMetricsHistBreakpoints	back to summary
private long[] numTablesMetricsHistBreakpoints

numTablesMetricsHistCounts	back to summary
private int[] numTablesMetricsHistCounts

oldHistBreakpoints	back to summary
private long[] oldHistBreakpoints

oldHistCounts	back to summary
private int[] oldHistCounts

perfMetricsHistBreakpoints	back to summary
private long[] perfMetricsHistBreakpoints

perfMetricsHistCounts	back to summary
private int[] perfMetricsHistCounts

queryTimeCount	back to summary
private long queryTimeCount

queryTimeMean	back to summary
private double queryTimeMean

queryTimeSum	back to summary
private double queryTimeSum

queryTimeSumSquares	back to summary
private double queryTimeSumSquares

shortestQueryTimeMs	back to summary
private long shortestQueryTimeMs

totalQueryTimeMs	back to summary
private double totalQueryTimeMs

Constructor Detail

BaseMetricsHolder	back to summary
public BaseMetricsHolder()

Method Detail

addToHistogram	back to summary
private void addToHistogram(int[] histogramCounts, long[] histogramBreakpoints, long value, int numberOfTimes, long currentLowerBound, long currentUpperBound)

addToPerformanceHistogram	back to summary
private void addToPerformanceHistogram(long value, int numberOfTimes)

addToTablesAccessedHistogram	back to summary
private void addToTablesAccessedHistogram(long value, int numberOfTimes)

checkAbonormallyLongQuery	back to summary
public boolean checkAbonormallyLongQuery(long millisOrNanos) Update statistics that allows the driver to determine if a query is slow enough to be logged, and return the estimation result for millisOrNanos value. Used in case autoSlowLog=true. Parameters millisOrNanos:long query execution time Returns:boolean true if millisOrNanos is outside the 99th percentile?

checkAbonormallyLongQuery

back to summary

public boolean checkAbonormallyLongQuery(long millisOrNanos)

Update statistics that allows the driver to determine if a query is slow enough to be logged, and return the estimation result for millisOrNanos value.

Used in case autoSlowLog=true.

Parameters

millisOrNanos:long: query execution time

Returns:boolean

true if millisOrNanos is outside the 99th percentile?

checkAndCreatePerformanceHistogram	back to summary
private void checkAndCreatePerformanceHistogram()

checkAndCreateTablesAccessedHistogram	back to summary
private void checkAndCreateTablesAccessedHistogram()

createInitialHistogram	back to summary
private void createInitialHistogram(long[] breakpoints, long lowerBound, long upperBound)

incrementNumberOfPreparedExecutes	back to summary
public void incrementNumberOfPreparedExecutes()

incrementNumberOfPrepares	back to summary
public void incrementNumberOfPrepares()

incrementNumberOfResultSetsCreated	back to summary
public void incrementNumberOfResultSetsCreated()

registerQueryExecutionTime	back to summary
public void registerQueryExecutionTime(long queryTimeMs) Parameters queryTimeMs:long query execution time in milliseconds

repartitionHistogram	back to summary
private void repartitionHistogram(int[] histCounts, long[] histBreakpoints, long currentLowerBound, long currentUpperBound)

repartitionPerformanceHistogram	back to summary
private void repartitionPerformanceHistogram()

repartitionTablesAccessedHistogram	back to summary
private void repartitionTablesAccessedHistogram()

reportMetrics	back to summary
public void reportMetrics(Log log)

reportNumberOfTablesAccessed	back to summary
public void reportNumberOfTablesAccessed(int numTablesAccessed) **