test/gc/arguments/TestSmallInitialHeapWithLargePageAndNUMA.java

rev 11780 : [mq]: webrev.0
rev 11781 : [mq]: webrev.1

*** 39,60 ****
  import jdk.test.lib.OutputAnalyzer;
  import sun.hotspot.WhiteBox;
  
  public class TestSmallInitialHeapWithLargePageAndNUMA {
  
!   private static final String MSG_EXIT_TOO_SMALL_HEAP = "Failed initializing NUMA. Too small initial heap size";
    private static final String MSG_GC_TRIGGERED_BEFORE_INIT = "GC triggered before VM initialization completed.";
  
    public static void main(String[] args) throws Exception {
  
      WhiteBox wb = WhiteBox.getWhiteBox();
      long heapAlignment = wb.getHeapAlignment();
  
!     // NUMA with large pages is not fully compatible in Linux, so we are using pin region.
!     // And the pin region case, we will skip freeing memory if the page size is larger than the default page size.
!     // If we allocate pages less than NUMA node, NUMA will try to use default page size.
!     // And this will conflict for pin region.
      // Assume the minimum NUMA node as 2.
      long initHeap = heapAlignment;
      long maxHeap = heapAlignment * 2;
  
      String[] vmArgs = {"-XX:+UseParallelGC",
--- 39,60 ----
  import jdk.test.lib.OutputAnalyzer;
  import sun.hotspot.WhiteBox;
  
  public class TestSmallInitialHeapWithLargePageAndNUMA {
  
!   private static final String MSG_EXIT_TOO_SMALL_HEAP = "Failed initializing NUMA with large pages. Too small heap size";
    private static final String MSG_GC_TRIGGERED_BEFORE_INIT = "GC triggered before VM initialization completed.";
  
    public static void main(String[] args) throws Exception {
  
      WhiteBox wb = WhiteBox.getWhiteBox();
      long heapAlignment = wb.getHeapAlignment();
  
!     // When using large pages, Linux does not support freeing parts of reserved and committed memory.
!     // And current Linux implementation uses page size as a condition to actually freeing memory.
!     // If we allocate pages less than NUMA node, NUMA will try to use default page size and
!     // this will free the memory which Linux does not support.
      // Assume the minimum NUMA node as 2.
      long initHeap = heapAlignment;
      long maxHeap = heapAlignment * 2;
  
      String[] vmArgs = {"-XX:+UseParallelGC",