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 TestGCOld
  26  * @key gc
  27  * @key stress
  28  * @requires vm.gc=="null"
  29  * @summary Stress the GC by trying to make old objects more likely to be garbage than young objects.
  30  * @run main/othervm -Xmx384M -XX:+UseSerialGC TestGCOld 50 1 20 10 10000
  31  * @run main/othervm -Xmx384M -XX:+UseParallelGC TestGCOld 50 1 20 10 10000
  32  * @run main/othervm -Xmx384M -XX:+UseParallelGC -XX:-UseParallelOldGC TestGCOld 50 1 20 10 10000
  33  * @run main/othervm -Xmx384M -XX:+UseConcMarkSweepGC TestGCOld 50 1 20 10 10000
  34  * @run main/othervm -Xmx384M -XX:+UseG1GC TestGCOld 50 1 20 10 10000
  35  * @run main/othervm -Xms64m -Xmx128m -XX:+UseG1GC -XX:+UseDynamicNumberOfGCThreads -Xlog:gc,gc+task=trace TestGCOld 50 5 20 1 5000

  36  */
  37 
  38 import java.text.*;
  39 import java.util.Random;
  40 
  41 class TreeNode {
  42     public TreeNode left, right;
  43     public int val;                // will always be the height of the tree
  44 }
  45 
  46 
  47 /* Args:
  48    live-data-size: in megabytes (approximate, will be rounded down).
  49    work: units of mutator non-allocation work per byte allocated,
  50      (in unspecified units.  This will affect the promotion rate
  51       printed at the end of the run: more mutator work per step implies
  52       fewer steps per second implies fewer bytes promoted per second.)
  53    short/long ratio: ratio of short-lived bytes allocated to long-lived
  54       bytes allocated.
  55    pointer mutation rate: number of pointer mutations per step.

  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 TestGCOld
  26  * @key gc
  27  * @key stress
  28  * @requires vm.gc=="null"
  29  * @summary Stress the GC by trying to make old objects more likely to be garbage than young objects.
  30  * @run main/othervm -Xmx384M -XX:+UseSerialGC TestGCOld 50 1 20 10 10000
  31  * @run main/othervm -Xmx384M -XX:+UseParallelGC TestGCOld 50 1 20 10 10000
  32  * @run main/othervm -Xmx384M -XX:+UseParallelGC -XX:-UseParallelOldGC TestGCOld 50 1 20 10 10000
  33  * @run main/othervm -Xmx384M -XX:+UseConcMarkSweepGC TestGCOld 50 1 20 10 10000
  34  * @run main/othervm -Xmx384M -XX:+UseG1GC TestGCOld 50 1 20 10 10000
  35  * @run main/othervm -Xms64m -Xmx128m -XX:+UseG1GC -XX:+UseDynamicNumberOfGCThreads -Xlog:gc,gc+task=trace TestGCOld 50 5 20 1 5000
  36  * @run main/othervm -Xms64m -Xmx128m -XX:+UseG1GC -XX:+UseDynamicNumberOfGCThreads  -XX:+UnlockDiagnosticVMOptions -XX:+InjectGCWorkerCreationFailure -Xlog:gc,gc+task=trace TestGCOld 50 5 20 1 5000
  37  */
  38 
  39 import java.text.*;
  40 import java.util.Random;
  41 
  42 class TreeNode {
  43     public TreeNode left, right;
  44     public int val;                // will always be the height of the tree
  45 }
  46 
  47 
  48 /* Args:
  49    live-data-size: in megabytes (approximate, will be rounded down).
  50    work: units of mutator non-allocation work per byte allocated,
  51      (in unspecified units.  This will affect the promotion rate
  52       printed at the end of the run: more mutator work per step implies
  53       fewer steps per second implies fewer bytes promoted per second.)
  54    short/long ratio: ratio of short-lived bytes allocated to long-lived
  55       bytes allocated.
  56    pointer mutation rate: number of pointer mutations per step.