ADDITIONAL SYSTEM INFORMATION :
Issue is there for Oracle as well as OpenJDK java11

A DESCRIPTION OF THE PROBLEM :
We are seeing a performance degradation on JDK11 with Class.newInstance() as compared to JDK8.
For quick check I executed below class on both JDK11 and JDK8. Execution time is ~25ms vs ~14ms in JDK11 and JDK8 respectively.
Is this a known issue or any workaround?

public class PerformanceTest {
    public PerformanceTest() {
    }
    public static void main(String[] args) {
        long l = System.currentTimeMillis();
        for (int i = 0; i < 100000; i++) {
            try {
                PerformanceTest.class.newInstance();
            } catch (InstantiationException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }
        System.out.println("time taken = " + (System.currentTimeMillis() - l) + "ms");
    }
}


REGRESSION : Last worked in version 8

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Execute following class on JDK8 and JDK11 which indicates performance degradation with 11

public class PerformanceTest {
    public PerformanceTest() {
    }
    public static void main(String[] args) {
        long l = System.currentTimeMillis();
        for (int i = 0; i < 100000; i++) {
            try {
                PerformanceTest.class.newInstance();
            } catch (InstantiationException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }
        System.out.println("time taken = " + (System.currentTimeMillis() - l) + "ms");
    }
}



FREQUENCY : always