test/gc/g1/TestRegionAlignment.java

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   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test TestRegionAlignment.java
  26  * @bug 8013791

  27  * @summary Make sure that G1 ergonomics pick a heap size that is aligned with the region size
  28  * @run main/othervm -XX:+UseG1GC -XX:G1HeapRegionSize=32m -XX:MaxRAM=555m TestRegionAlignment
  29  *
  30  * When G1 ergonomically picks a maximum heap size it must be aligned to the region size.
  31  * This test tries to get the VM to pick a small and unaligned heap size (by using MaxRAM=555) and a
  32  * large region size (by using -XX:G1HeapRegionSize=32m). This will fail without the fix for 8013791.
  33  */
  34 public class TestRegionAlignment {
  35     public static void main(String[] args) { }
  36 }


   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test TestRegionAlignment.java
  26  * @bug 8013791
  27  * @requires vm.gc=="G1" | vm.gc=="null"
  28  * @summary Make sure that G1 ergonomics pick a heap size that is aligned with the region size
  29  * @run main/othervm -XX:+UseG1GC -XX:G1HeapRegionSize=32m -XX:MaxRAM=555m TestRegionAlignment
  30  *
  31  * When G1 ergonomically picks a maximum heap size it must be aligned to the region size.
  32  * This test tries to get the VM to pick a small and unaligned heap size (by using MaxRAM=555) and a
  33  * large region size (by using -XX:G1HeapRegionSize=32m). This will fail without the fix for 8013791.
  34  */
  35 public class TestRegionAlignment {
  36     public static void main(String[] args) { }
  37 }