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8153734: TestHumongousReferenceObject.java occasionally crashes with "unable to allocate heap of 1g" on win32

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Decrease the heap size used in the test from 1g to 128M.

Reviewed-by: dfazunen, sjohanss
This commit is contained in:
Thomas Schatzl 2016-04-07 15:17:08 +02:00
parent f22c068365
commit a9cf95480f
1 changed files with 8 additions and 8 deletions
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16
hotspot/test/gc/TestHumongousReferenceObject.java
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@ -27,26 +27,26 @@ import jdk.internal.vm.annotation.Contended;
* @test
* @summary Test that verifies that iteration over large, plain Java objects, that potentially cross region boundaries on G1, with references in them works.
* @requires vm.gc == "null"
* @bug 8151499
* @bug 8151499 8153734
* @modules java.base/jdk.internal.vm.annotation
* @run main/othervm -XX:+EnableContended -XX:-RestrictContended -Xmx1g -XX:+UseParallelGC -XX:ContendedPaddingWidth=8192 TestHumongousReferenceObject
* @run main/othervm -XX:+EnableContended -XX:-RestrictContended -Xmx1g -XX:+UseG1GC -XX:G1HeapRegionSize=1M -XX:ContendedPaddingWidth=8192 TestHumongousReferenceObject
* @run main/othervm -XX:+EnableContended -XX:-RestrictContended -Xmx1g -XX:+UseG1GC -XX:G1HeapRegionSize=2M -XX:ContendedPaddingWidth=8192 TestHumongousReferenceObject
* @run main/othervm -XX:+EnableContended -XX:-RestrictContended -Xmx1g -XX:+UseG1GC -XX:G1HeapRegionSize=4M -XX:ContendedPaddingWidth=8192 TestHumongousReferenceObject
* @run main/othervm -XX:+EnableContended -XX:-RestrictContended -Xmx1g -XX:+UseG1GC -XX:G1HeapRegionSize=8M -XX:ContendedPaddingWidth=8192 TestHumongousReferenceObject
* @run main/othervm -XX:+EnableContended -XX:-RestrictContended -Xmx128m -XX:+UseParallelGC -XX:ContendedPaddingWidth=8192 TestHumongousReferenceObject
* @run main/othervm -XX:+EnableContended -XX:-RestrictContended -Xmx128m -XX:+UseG1GC -XX:G1HeapRegionSize=1M -XX:ContendedPaddingWidth=8192 TestHumongousReferenceObject
* @run main/othervm -XX:+EnableContended -XX:-RestrictContended -Xmx128m -XX:+UseG1GC -XX:G1HeapRegionSize=2M -XX:ContendedPaddingWidth=8192 TestHumongousReferenceObject
* @run main/othervm -XX:+EnableContended -XX:-RestrictContended -Xmx128m -XX:+UseG1GC -XX:G1HeapRegionSize=4M -XX:ContendedPaddingWidth=8192 TestHumongousReferenceObject
* @run main/othervm -XX:+EnableContended -XX:-RestrictContended -Xmx128m -XX:+UseG1GC -XX:G1HeapRegionSize=8M -XX:ContendedPaddingWidth=8192 TestHumongousReferenceObject
*/
public class TestHumongousReferenceObject {
/*
Due to 300 fields with 8K @Contended padding around each field, it takes 2.4M bytes per instance.
With small G1 regions, it is bound to cross regions. G1 should properly (card) mark the object nevertheless.
With 1G heap, it is enough to allocate ~400 of these objects to provoke at least one GC.
With 128M heap, it is enough to allocate ~100 of these objects to provoke at least one GC.
*/
static volatile Object instance;
public static void main(String[] args) {
for (int c = 0; c < 400; c++) {
for (int c = 0; c < 100; c++) {
instance = new TestHumongousReferenceObject();
}
}