JDK 9 RFR of JDK-8122944: perfdata used is seen as too high on sparc zone with jdk1.9 and causes a test failure

[Joseph D. Darcy]

Hello,

In certain machine configurations (large SPARC boxes with lots of 
threads), the test

    sun/jvmstat/perfdata/PrologSanity/PrologSizeSanityCheck.java

fails because the PerfDataMemorySize buffer gets too close to its limit. 
To allow the test to pass on machines like this as well as smaller 
boxes, I'd like to just bump its PerfDataMemorySize to 64k from the 
default of 32k. The patch to accomplish this is:

--- a/test/sun/jvmstat/perfdata/PrologSanity/PrologSizeSanityCheck.java 
Sat Jul 25 08:50:45 2015 +0300
+++ b/test/sun/jvmstat/perfdata/PrologSanity/PrologSizeSanityCheck.java 
Mon Jul 27 18:37:23 2015 -0700
@@ -25,7 +25,7 @@
  * @test
  * @bug 4990825
  * @modules jdk.jvmstat/sun.jvmstat.monitor
- * @run main/othervm -XX:+UsePerfData  PrologSizeSanityCheck
+ * @run main/othervm -XX:+UsePerfData -XX:PerfDataMemorySize=64k 
PrologSizeSanityCheck
  * @summary prolog size and overflow sanity checks
  */

Thanks,

-Joe