57 lines
1.4 KiB
Java
57 lines
1.4 KiB
Java
package jmh;
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import org.openjdk.jmh.annotations.*;
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import org.openjdk.jmh.runner.Runner;
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import org.openjdk.jmh.runner.RunnerException;
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import org.openjdk.jmh.runner.options.Options;
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import org.openjdk.jmh.runner.options.OptionsBuilder;
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import java.util.concurrent.TimeUnit;
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@BenchmarkMode(Mode.AverageTime)
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@Fork(1)
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@Warmup(iterations = 5)
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@Measurement(iterations = 10)
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@OutputTimeUnit(TimeUnit.MICROSECONDS)
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public class JMHExample05 {
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public static void main(String[] args) throws RunnerException {
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Options options = new OptionsBuilder()
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.include(JMHExample05.class.getSimpleName())
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.build();
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new Runner(options).run();
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}
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// 在线程组test，在线称中有三个线程不断对Test实例write方法进行调用
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@GroupThreads(3)
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@Group("test")
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@Benchmark
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public void testWrite(MyState state) {
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state.write();
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}
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// 在线程组test，在线程中有三个线程对testRead方法进行调用
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@GroupThreads(3)
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@Group("test")
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@Benchmark
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public void testRead(MyState state) {
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state.read();
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}
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@State(Scope.Benchmark)
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public static class MyState {
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public MyState() {
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System.out.println("create instance");
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}
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public void write() {
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System.out.println("write");
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}
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public void read() {
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System.out.println("read");
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}
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}
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}
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