8336410: runtime/NMT/TotalMallocMmapDiffTest.java Total malloc diff is incorrect. Expected malloc diff range

Reviewed-by: gziemski, stuefe

Author: jdksjolen

test/hotspot/jtreg/runtime/NMT/TotalMallocMmapDiffTest.java

@@ -32,7 +32,7 @@
  *          java.management
  * @build jdk.test.whitebox.WhiteBox
  * @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
- * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=summary -Xms32m -Xmx32m TotalMallocMmapDiffTest
+ * @run main/othervm -Xbootclasspath/a:. -XX:TieredStopAtLevel=1 -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=summary -Xms32m -Xmx32m TotalMallocMmapDiffTest
  *
  */
 
@@ -43,9 +43,10 @@
 public class TotalMallocMmapDiffTest {
     private static final WhiteBox wb = WhiteBox.getWhiteBox();
     private static final long ALLOCATE_SIZE = 250 * 1024 * 1024; // 250MB
-    private static final double FUDGE_FACTOR = 0.2;
-    private static final double UPPER_BOUND = ALLOCATE_SIZE * (1 + FUDGE_FACTOR);
-    private static final double LOWER_BOUND = ALLOCATE_SIZE * (1 - FUDGE_FACTOR);
+    private static final double FUDGE_FACTOR_UPPER = 0.3;
+    private static final double FUDGE_FACTOR_LOWER = 0.2;
+    private static final double UPPER_BOUND = ALLOCATE_SIZE * (1 + FUDGE_FACTOR_UPPER);
+    private static final double LOWER_BOUND = ALLOCATE_SIZE * (1 - FUDGE_FACTOR_LOWER);
 
     public static void main(String[] args) throws Exception {