使用JMH对spring boot应用程序进行基准测试

Question

我有一个Spring Boot应用程序，我想使用JMH对其进行基准测试。任何有关此集成的参考都将是有用的。

Answer 1

这个解决办法比我想象的要容易得多。重要的部分是在初始化基准时启动spring-boot应用程序。为配置上下文定义一个类级变量，并在基准设置期间提供对它的引用。调用基准测试中的bean方法。

import java.io.File;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.concurrent.TimeUnit;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Level;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.infra.Blackhole;
import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;
import org.springframework.boot.SpringApplication;
import org.springframework.context.ConfigurableApplicationContext;

@BenchmarkMode(Mode.Throughput) @OutputTimeUnit(TimeUnit.MINUTES)
@State(Scope.Thread)
public class ProcessFeedBenchMark   {

    public static void main(String args[]) throws Exception {
        URLClassLoader classLoader = (URLClassLoader) ProcessFeedBenchMark.class.getClassLoader();
        StringBuilder classpath = new StringBuilder();
        for(URL url : classLoader.getURLs())
            classpath.append(url.getPath()).append(File.pathSeparator);
        classpath.append("/D:/work/zymespace/benchmark/src/main/resources/").append(File.pathSeparator);
        System.out.print(classpath.toString());
        System.setProperty("java.class.path", classpath.toString());

        Options opt = new OptionsBuilder()
        .include(ProcessFeedBenchMark.class.getName() + ".*")
        .timeUnit(TimeUnit.MILLISECONDS)
        .threads(1)

        .shouldFailOnError(true)
        .shouldDoGC(true)
        .build();

        new Runner(opt).run();
    }
    static ConfigurableApplicationContext context;

    private BenchmarkTestService service;

    @Setup (Level.Trial) 
    public synchronized void  initialize() {
        try {
            String args = "";
            if(context == null) {
                context = SpringApplication.run(BenchmarkSpringBootStater.class, args );
            }
            service = context.getBean(BenchmarkTestService.class);
            System.out.println(service);
        } catch(Exception e) {
            e.printStackTrace();
        }
    }

    @Benchmark 
    public void benchmark1 (ProcessFeedBenchMark state, Blackhole bh) {
        try {
            service.li();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}