RFR(S): 7198849: Make javax/management/remote/mandatory/notif/ListenerScaleTest.java less timing sensitive

[Staffan Larsen]

The test sometimes fails with a ratio somewhere in the low 100s. If the timing 
was indeed linear in the number of listeners, the ratio would be 20000. 
Increasing the allowed ration to 500 (from 100) should therefore still catch 
the real regression, but make the test more robust.

Thanks,
/Staffan


diff --git 
a/test/javax/management/remote/mandatory/notif/ListenerScaleTest.java 
b/test/javax/management/remote/mandatory/notif/ListenerScaleTest.java
--- a/test/javax/management/remote/mandatory/notif/ListenerScaleTest.java
+++ b/test/javax/management/remote/mandatory/notif/ListenerScaleTest.java
@@ -45,7 +45,7 @@
  *
  * As usual with timing-sensitive tests, we could potentially get
  * sporadic failures.  We fail if the ratio of the time with many
- * MBeans to the time with just one MBean is more than 100.  With the
+ * MBeans to the time with just one MBean is more than 500.  With the
  * fix in place, it is usually less than 1, presumably because some
  * code was being interpreted during the first measurement but had
  * been compiled by the second.
@@ -176,7 +176,7 @@
         long manyMBeansTime = timeNotif(mbs);
         System.out.println("Time with many MBeans: " + manyMBeansTime + "ns");
         double ratio = (double) manyMBeansTime / singleMBeanTime;
-        if (ratio > 100.0)
+        if (ratio > 500.0)
             throw new Exception("Failed: ratio=" + ratio);
         System.out.println("Test passed: ratio=" + ratio);
     }