The serialization and deserialization performance of Jackson3 is lower than that of Jackson2 ?

[brucelwl]

I conducted benchmark tests on Jackson3 and Jackson2 through JMH, but found that the performance of Jackson3 was much worse than that of Jackson2, which did not meet my expectations for Jackson3. I don't know if my test cases were unreasonable or if there are other reasons. Do you have a stress test report for Jackson3? Here is my test code

@BenchmarkMode(Mode.Throughput) 
@Warmup(iterations = 1) 
@Threads(15)  
@State(Scope.Benchmark) //@State(Scope.Benchmark)
@Measurement(iterations = 2, time = 10, timeUnit = TimeUnit.SECONDS)
//@Measurement(iterations = 2, batchSize = 1024)
@OutputTimeUnit(TimeUnit.MILLISECONDS) 
public class Jackson3BenchmarkTest {

    com.fasterxml.jackson.databind.ObjectMapper jackson2 = new com.fasterxml.jackson.databind.ObjectMapper();
    tools.jackson.databind.ObjectMapper jackson3 = new tools.jackson.databind.ObjectMapper();


    @Setup
    public void setup() throws Exception {

    }

    @Benchmark
    public void jackson2Test(Blackhole blackhole) throws Exception {
        UserInfo userInfo = new UserInfo();
        userInfo.setUsername("aaa");
        userInfo.setTags(Arrays.asList("aaa", "bbb", "中文你好"));

        String json = jackson2.writer().writeValueAsString(userInfo);
        UserInfo userInfo1 = jackson2.readValue(json, UserInfo.class);

        blackhole.consume(userInfo1);
    }

    @Benchmark
    public void jackson3Test(Blackhole blackhole) throws Exception {
        UserInfo userInfo = new UserInfo();
        userInfo.setUsername("aaa");
        userInfo.setTags(Arrays.asList("aaa", "bbb", "中文你好"));

        String json = jackson3.writer().writeValueAsString(userInfo);
        UserInfo userInfo1 = jackson3.readValue(json, UserInfo.class);

        blackhole.consume(userInfo1);
    }

    public static void main(String[] args) throws Exception {
        Options options = new OptionsBuilder().include(Jackson3BenchmarkTest.class.getName())
                //.output("benchmark/jedis-Throughput.log")
                .forks(0)
                .build();
        new Runner(options).run();
    }

}