Package de.cuioss.benchmarking.common.jfr

Class JfrVarianceAnalyzer

java.lang.Object

de.cuioss.benchmarking.common.jfr.JfrVarianceAnalyzer

public class JfrVarianceAnalyzer
extends Object

Analyzes JFR recordings to extract operation variance metrics.

This utility reads JFR files generated during benchmarks and calculates:

• Time variance across different operations
• Percentile distributions (P50, P95, P99)
• Coefficient of variation for operation times
• Concurrent load impact on variance

Usage:

 Path jfrFile = Path.of("target/benchmark-results/benchmark.jfr");
 JfrVarianceAnalyzer analyzer = new JfrVarianceAnalyzer();
 VarianceReport report = analyzer.analyze(jfrFile);
 report.printSummary();
 

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	JfrVarianceAnalyzer.OperationMetrics	Metrics for a specific operation type within a benchmark.
static class	JfrVarianceAnalyzer.VarianceReport	Variance analysis report containing metrics for all operations.

Constructor Summary

Constructors

Constructor	Description
JfrVarianceAnalyzer()

Method Summary

Modifier and Type	Method	Description
JfrVarianceAnalyzer.VarianceReport	analyze(Path jfrFile)	Analyzes a JFR recording file and generates a variance report.
static void	main(String[] args)	Main method for command-line usage.

Methods inherited from class java.lang.Object

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

Constructor Details

JfrVarianceAnalyzer

public JfrVarianceAnalyzer()

Method Details

analyze

public JfrVarianceAnalyzer.VarianceReport analyze(Path jfrFile)
                                           throws IOException

Analyzes a JFR recording file and generates a variance report.

Parameters:

jfrFile - path to the JFR recording file

Returns:

variance analysis report

Throws:

IOException - if the file cannot be read

main

public static void main(String[] args)
                 throws IOException

Main method for command-line usage.

Throws:

IOException