Test com/sun/management/ThreadMXBean/ThreadCpuTimeArray.java failed: out of expected range

---------System.err:(10/605)----------
java.lang.RuntimeException: TEST FAILED: MyThread-1 CPU time = 16805360 previous CPU time 16628040 out of expected range
at ThreadCpuTimeArray.main(ThreadCpuTimeArray.java:144)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:333)
at java.base/java.lang.Thread.run(Thread.java:1583)

The "expected range" is within a DELTA of 100.

But the other odd thing about this failure is that the main thread is being continually interrupted somehow:

Unexpected exception is thrown.
java.lang.InterruptedException
at java.base/java.lang.Object.wait0(Native Method)
at java.base/java.lang.Object.wait(Object.java:366)
at java.base/java.lang.Object.wait(Object.java:339)
at ThreadCpuTimeArray$MyThread.run(ThreadCpuTimeArray.java:247)

repeated for each join() in the loop!