8304375: jdk/jfr/api/consumer/filestream/TestOrdered.java failed with "Expected at least some events to be out of order! Reuse = false"

Backport-of: 4870234552d2c63c786641493794a87654b98b7b

Author: SendaoYan

test/jdk/jdk/jfr/api/consumer/filestream/TestOrdered.java

@@ -66,6 +66,11 @@ public void run() {
                 e.printStackTrace();
                 throw new Error("Unexpected exception in barrier");
             }
+            Instant timestamp = Instant.now();
+            // Wait for clock to increment
+            while (Instant.now().equals(timestamp)) {
+                ;
+            }
             OrderedEvent e2 = new OrderedEvent();
             e2.commit();
         }
@@ -108,6 +113,7 @@ private static void testSetOrderedFalse(Path p) throws Exception {
                 es.setOrdered(false);
                 es.onEvent(e -> {
                     Instant endTime = e.getEndTime();
+                    System.out.println("testSetOrderedFalse: endTime: " + endTime);
                     if (endTime.isBefore(timestamp.get())) {
                         unoreded.set(true);
                         es.close();