JMH Benchmark Sample

KK.java

@BenchmarkMode(Mode.AverageTime)
@Warmup(iterations = 3, time = 1)
@Measurement(iterations = 5, time = 5)
@Threads(4)
@Fork(1)
@State(value = Scope.Benchmark)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public class KK {

    private final XmlMapper xmlMapper;
    private final String content;

    {
        xmlMapper = new Jackson2ObjectMapperBuilder().createXmlMapper(true).indentOutput(true).build();
        xmlMapper.enable(ToXmlGenerator.Feature.WRITE_XML_1_1);
        xmlMapper.setPropertyNamingStrategy(PropertyNamingStrategies.UPPER_CAMEL_CASE);
        content = ResourceLoader.read(new ClassPathResource("cw/shipment_req.xml"));
    }

    public static void main(String[] args) throws RunnerException {
        Options opt = new OptionsBuilder()
            .include(KK.class.getSimpleName())
            .result("/Users/cwa166/Downloads/Benchmark.json")
            .resultFormat(ResultFormatType.JSON).build();
        new Runner(opt).run();
    }

    @Benchmark
    public void testXmlMapper() throws JsonProcessingException {
        ShipmentReq base = ShipmentReq.base();
        base.getShipmentRequest().getDataContext().getDataTargetCollection().get(0).setType("T1");
        base.getShipmentRequest().getDataContext().getDataTargetCollection().get(0).setKey("k1");
        base.getShipmentRequest().getDataContext().getCompany().setCode("BBC");
        base.getShipmentRequest().getDataContext().setServerID("server1");
        xmlMapper.writeValueAsString(base);
    }

    @Benchmark
    public void testResourceLoader() {
        ResourceLoader.interpolate(content, "T1", "K1", "BBC", "server1");
    }
}

Benchmark                       Mode  Cnt     Score      Error   Units
KK.testResourceLoader  avgt     5   5812.807 ± 261.780   ns/op
KK.testXmlMapper        avgt     5   2910.028 ± 177.324   ns/op

Refs: https://www.cnblogs.com/54chensongxia/p/15485421.html