private void addLockOwnerThreadId(Set<Long> stuckThreadIds, long threadId) {
    final long lockOwnerId = getLockOwnerId(threadId);
    if (lockOwnerId != -1) {
      stuckThreadIds.add(lockOwnerId);
    }
  }
If set to true, then the JVM will be asked for all potential stuck threads with one call.
Since getThreadInfo on many JVMs, stops ALL threads from running, and since getting info
on multiple threads with one call is additional work, setting this can cause an extra long
stop the world that can then cause other problems (like a forced disconnect).
So be careful setting this to true.
geode-core/src/main/java/org/apache/geode/internal/monitoring/ThreadsMonitoringProcess.java