29 * @modules java.base/sun.misc
30 * java.management
31 */
32
33 import jdk.test.lib.*;
34
35 public class TestHumongousAllocInitialMark {
36 // Heap sizes < 224 MB are increased to 224 MB if vm_page_size == 64K to
37 // fulfill alignment constraints.
38 private static final int heapSize = 224; // MB
39 private static final int heapRegionSize = 1; // MB
40 private static final int initiatingHeapOccupancyPercent = 50; // %
41
42 public static void main(String[] args) throws Exception {
43 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
44 "-XX:+UseG1GC",
45 "-Xms" + heapSize + "m",
46 "-Xmx" + heapSize + "m",
47 "-XX:G1HeapRegionSize=" + heapRegionSize + "m",
48 "-XX:InitiatingHeapOccupancyPercent=" + initiatingHeapOccupancyPercent,
49 "-XX:+PrintGC",
50 HumongousObjectAllocator.class.getName());
51
52 OutputAnalyzer output = new OutputAnalyzer(pb.start());
53 output.shouldContain("GC pause (G1 Humongous Allocation) (young) (initial-mark)");
54 output.shouldNotContain("Full GC");
55 output.shouldHaveExitValue(0);
56 }
57
58 static class HumongousObjectAllocator {
59 private static byte[] dummy;
60
61 public static void main(String [] args) throws Exception {
62 // Make object size 75% of region size
63 final int humongousObjectSize =
64 (int)(heapRegionSize * 1024 * 1024 * 0.75);
65
66 // Number of objects to allocate to go above IHOP
67 final int humongousObjectAllocations =
68 (int)((heapSize * initiatingHeapOccupancyPercent / 100.0) / heapRegionSize) + 1;
69
70 // Allocate
71 for (int i = 1; i <= humongousObjectAllocations; i++) {
72 System.out.println("Allocating humongous object " + i + "/" + humongousObjectAllocations +
73 " of size " + humongousObjectSize + " bytes");
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29 * @modules java.base/sun.misc
30 * java.management
31 */
32
33 import jdk.test.lib.*;
34
35 public class TestHumongousAllocInitialMark {
36 // Heap sizes < 224 MB are increased to 224 MB if vm_page_size == 64K to
37 // fulfill alignment constraints.
38 private static final int heapSize = 224; // MB
39 private static final int heapRegionSize = 1; // MB
40 private static final int initiatingHeapOccupancyPercent = 50; // %
41
42 public static void main(String[] args) throws Exception {
43 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
44 "-XX:+UseG1GC",
45 "-Xms" + heapSize + "m",
46 "-Xmx" + heapSize + "m",
47 "-XX:G1HeapRegionSize=" + heapRegionSize + "m",
48 "-XX:InitiatingHeapOccupancyPercent=" + initiatingHeapOccupancyPercent,
49 "-Xlog:gc",
50 HumongousObjectAllocator.class.getName());
51
52 OutputAnalyzer output = new OutputAnalyzer(pb.start());
53 output.shouldContain("Pause Initial Mark (G1 Humongous Allocation)");
54 output.shouldNotContain("Full GC");
55 output.shouldHaveExitValue(0);
56 }
57
58 static class HumongousObjectAllocator {
59 private static byte[] dummy;
60
61 public static void main(String [] args) throws Exception {
62 // Make object size 75% of region size
63 final int humongousObjectSize =
64 (int)(heapRegionSize * 1024 * 1024 * 0.75);
65
66 // Number of objects to allocate to go above IHOP
67 final int humongousObjectAllocations =
68 (int)((heapSize * initiatingHeapOccupancyPercent / 100.0) / heapRegionSize) + 1;
69
70 // Allocate
71 for (int i = 1; i <= humongousObjectAllocations; i++) {
72 System.out.println("Allocating humongous object " + i + "/" + humongousObjectAllocations +
73 " of size " + humongousObjectSize + " bytes");
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