Package org.openjdk.jmc.flightrecorder.rules.jdk.dataproviders

Class MethodProfilingDataProvider

java.lang.Object

org.openjdk.jmc.flightrecorder.rules.jdk.dataproviders.MethodProfilingDataProvider

public class MethodProfilingDataProvider
extends java.lang.Object

Helper class for analyzing sets of method profiling samples.

Field Summary

Fields

Modifier and Type	Field	Description
static IAggregator<IQuantity,?>	MAX_ENDTIME
static IAggregator<IQuantity,?>	MIN_ENDTIME
static IAccessorFactory<IMCStackTrace>	PATH_ACCESSOR_FACTORY
static IItemFilter	SAMPLES_OR_CPU_FILTER
static IAccessorFactory<IMCMethod>	TOP_FRAME_ACCESSOR_FACTORY	A custom accessor used to get the top frame in a stack trace.
static IAggregator<IQuantity,?>	TOP_FRAME_BALANCE	Ready to use aggregator using the topFrameBalanceFunction.
static IAggregator<IQuantity,?>	TOP_FRAME_QUOTA	Ready to use aggregator using the topFrameQuotaFunction.
static GroupingAggregator.IQuantityListFinisher<IQuantity>	topFrameBalanceFunction	Function that calculates a value representing how balanced the set of top frames is as a number in the range [0,1].
static GroupingAggregator.IQuantityListFinisher<IQuantity>	topFrameQuotaFunction	A quota calculation of how large a part the most commonly occurring top frame is of the total amount of samples input.

Constructor Summary

Constructors

Constructor	Description
MethodProfilingDataProvider()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

SAMPLES_OR_CPU_FILTER

public static final IItemFilter SAMPLES_OR_CPU_FILTER

MIN_ENDTIME

public static final IAggregator<IQuantity,?> MIN_ENDTIME

MAX_ENDTIME

public static final IAggregator<IQuantity,?> MAX_ENDTIME

TOP_FRAME_ACCESSOR_FACTORY

public static final IAccessorFactory<IMCMethod> TOP_FRAME_ACCESSOR_FACTORY

A custom accessor used to get the top frame in a stack trace.

PATH_ACCESSOR_FACTORY

public static final IAccessorFactory<IMCStackTrace> PATH_ACCESSOR_FACTORY

topFrameBalanceFunction

public static final GroupingAggregator.IQuantityListFinisher<IQuantity> topFrameBalanceFunction

Function that calculates a value representing how balanced the set of top frames is as a number in the range [0,1]. A high number indicates that there are some frames occurring more frequently than others.

topFrameQuotaFunction

public static final GroupingAggregator.IQuantityListFinisher<IQuantity> topFrameQuotaFunction

A quota calculation of how large a part the most commonly occurring top frame is of the total amount of samples input.

TOP_FRAME_BALANCE

public static final IAggregator<IQuantity,?> TOP_FRAME_BALANCE

Ready to use aggregator using the topFrameBalanceFunction.

TOP_FRAME_QUOTA

public static final IAggregator<IQuantity,?> TOP_FRAME_QUOTA

Ready to use aggregator using the topFrameQuotaFunction.

Constructor Detail

MethodProfilingDataProvider

public MethodProfilingDataProvider()