JMH: Send the benchmark results to a file

By setting the result option using OptionsBuilder, we can send the benchmark results to a file.

 

Example

Options opt = new OptionsBuilder()
.include(SendResultToAFile.class.getSimpleName())
.forks(1)
.measurementIterations(4)
.warmupIterations(3)
.resultFormat(ResultFormatType.JSON)
.result("/Users/Shared/result.json")
.build();

Above snippet send the benchmark results to the file "/Users/Shared/result.json".

 

Find the below working application.

 

SendResultToAFile.java

package com.sample.app;

import java.util.concurrent.TimeUnit;

import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.results.format.ResultFormatType;
import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.RunnerException;
import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;

public class SendResultToAFile {
	
	@Benchmark
	public void test1() throws InterruptedException {
		TimeUnit.MILLISECONDS.sleep(300);
	}
	
	public static void main(String[] args) throws RunnerException {
		Options opt = new OptionsBuilder()
				.include(SendResultToAFile.class.getSimpleName())
				.forks(1)
				.measurementIterations(4)
				.warmupIterations(3)
				.resultFormat(ResultFormatType.JSON)
				.result("/Users/Shared/result.json")
				.build();

		new Runner(opt).run();
	}
}

Run the application and you can see result.json file will be created with benchmark results.

 

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