ProfilerBenchmarks.java

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package net.java.btrace;

import com.sun.btrace.profiling.MethodInvocationProfiler;
import java.util.concurrent.TimeUnit;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Measurement;
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.annotations.Threads;
import org.openjdk.jmh.annotations.Warmup;
import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;
import org.openjdk.jmh.runner.options.VerboseMode;

/**
 * Basic benchmark for the performance of {@linkplain MethodInvocationProfiler}
 * @author Jaroslav Bachorik
 */
@State(Scope.Thread)
@OutputTimeUnit(TimeUnit.MICROSECONDS)
@Fork(1)
@BenchmarkMode(Mode.AverageTime)
public class ProfilerBenchmarks {
    private MethodInvocationProfiler mip1;
    private MethodInvocationProfiler mip2;

    @Setup
    public void setup() {
        mip1 = new MethodInvocationProfiler(1);
        mip2 = new MethodInvocationProfiler(500);
    }

    @Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
    @Measurement(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
    @Benchmark
    @Threads(1)
    public void testOneMethodSingleThread() {
        mip1.recordEntry("a");
        mip1.recordExit("a", 1);
    }

    @Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
    @Measurement(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
    @Benchmark
    @Threads(1)
    public void testTwoMethods01Thread() {
        mip2.recordEntry("a");
        mip2.recordEntry("b");
        mip2.recordExit("b", 10);
        mip2.recordExit("a", 1);
    }

    @Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
    @Measurement(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
    @Benchmark
    @Threads(2)
    public void testTwoMethods02Threads() {
        mip2.recordEntry("a");
        mip2.recordEntry("b");
        mip2.recordExit("b", 10);
        mip2.recordExit("a", 1);
    }

    @Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
    @Measurement(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
    @Benchmark
    @Threads(4)
    public void testTwoMethods04Threads() {
        mip2.recordEntry("a");
        mip2.recordEntry("b");
        mip2.recordExit("b", 10);
        mip2.recordExit("a", 1);
    }

    @Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
    @Measurement(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
    @Benchmark
    @Threads(8)
    public void testTwoMethods08Threads() {
        mip2.recordEntry("a");
        mip2.recordEntry("b");
        mip2.recordExit("b", 10);
        mip2.recordExit("a", 1);
    }
    @Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
    @Measurement(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
    @Benchmark
    @Threads(16)
    public void testTwoMethods16Threads() {
        mip2.recordEntry("a");
        mip2.recordEntry("b");
        mip2.recordExit("b", 10);
        mip2.recordExit("a", 1);
    }

    public static void main(String[] args) throws Exception {
        Options opt = new OptionsBuilder()
                .addProfiler("perfasm")
                .verbosity(VerboseMode.NORMAL)
                .include(".*" + ProfilerBenchmarks.class.getSimpleName() + ".*test.*")
                .build();

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