Package org.apache.nifi.controller.repository.metrics.tracking

Class StandardStatsTracker

java.lang.Object

org.apache.nifi.controller.repository.metrics.tracking.StandardStatsTracker

All Implemented Interfaces:

StatsTracker

public class StandardStatsTracker
extends Object
implements StatsTracker

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static final record	StandardStatsTracker.SampledCpuMetrics

Field Summary

Fields

Modifier and Type	Field	Description
private final LongSupplier	cpuTimeMillisTracker
private final LongSupplier	gcMillisTracker
private final AtomicLong	iterations
private final int	iterationsBetweenCpuTracking
private final AtomicReference<StandardStatsTracker.SampledCpuMetrics>	sampledCpuMetrics
private static final ThreadMXBean	threadMXBean

Constructor Summary

Constructors

Constructor	Description
StandardStatsTracker(LongSupplier gcMillisTracker, int expensiveMetricsTrackingPercentage)

Method Summary

Modifier and Type	Method	Description
private void	addSampledCpuTime(long processingNanoseconds, long cpuNanoseconds)
private long	estimateCpuTime(long processingNanoseconds)
TrackedStats	startTracking()	Starts tracking stats for a Processor, returning a TrackedStats object that can be used to capture stats when it is ended.

Methods inherited from class java.lang.Object

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

Field Details

threadMXBean

private static final ThreadMXBean threadMXBean

gcMillisTracker

private final LongSupplier gcMillisTracker

cpuTimeMillisTracker

private final LongSupplier cpuTimeMillisTracker

iterationsBetweenCpuTracking

private final int iterationsBetweenCpuTracking

iterations

private final AtomicLong iterations

sampledCpuMetrics

private final AtomicReference<StandardStatsTracker.SampledCpuMetrics> sampledCpuMetrics

Constructor Details

StandardStatsTracker

public StandardStatsTracker(LongSupplier gcMillisTracker,
 int expensiveMetricsTrackingPercentage)

Method Details

startTracking

public TrackedStats startTracking()

Description copied from interface: StatsTracker

Starts tracking stats for a Processor, returning a TrackedStats object that can be used to capture stats when it is ended.

Specified by:

startTracking in interface StatsTracker

Returns:

a TrackedStats that can be used to capture stats when it is ended.

addSampledCpuTime

private void addSampledCpuTime(long processingNanoseconds,
 long cpuNanoseconds)

estimateCpuTime

private long estimateCpuTime(long processingNanoseconds)