8258734: jdk/jfr/event/oldobject/TestClassLoaderLeak.java failed with "RuntimeException: Could not find class leak"

Backport-of: aefd4ac4a336f00c067bcb91b95472ccc9a6bf83

Author: GoeLin

test/jdk/jdk/jfr/event/oldobject/TestClassLoaderLeak.java

@@ -55,18 +55,22 @@ public static void main(String[] args) throws Exception {
             r.enable(EventNames.OldObjectSample).withStackTrace().with("cutoff", "infinity");
             r.start();
             TestClassLoader testClassLoader = new TestClassLoader();
-            for (Class<?> clazz : testClassLoader.loadClasses(OldObjects.MIN_SIZE / 20)) {
+            for (Class<?> clazz : testClassLoader.loadClasses(OldObjects.MIN_SIZE / 200)) {
                 // Allocate array to trigger sampling code path for interpreter / c1
-                for (int i = 0; i < 20; i++) {
+                for (int i = 0; i < 200; i++) {
                     Object classArray = Array.newInstance(clazz, 20);
-                    Array.set(classArray, i, clazz.newInstance());
+                    // No need to fill whole array
+                    for (int j = 0; j < 5; j++) {
+                        Array.set(classArray, j, clazz.getConstructors()[0].newInstance());
+                    }
                     classObjects.add(classArray);
                 }
             }
             r.stop();
             List<RecordedEvent> events = Events.fromRecording(r);
             Events.hasEvents(events);
             for (RecordedEvent e : events) {
+                System.out.println(e);
                 RecordedObject object = e.getValue("object");
                 RecordedClass rc = object.getValue("type");
                 if (rc.getName().contains("TestClass")) {