poor garbage collector performance on Solaris

Name: ngC57085 Date: 03/30/2000



jdk1.3.0rc2-Y cannot successfully execute next test on Solaris:

--------------------------test.java------------------------------------
package p;

import java.io.PrintStream;

public class test {
  public static void main(String args[]) {
System.exit(run(args, System.out) + 95/*STATUS_TEMP*/);
}
 
public static int run(String args[], PrintStream out) {
// int lim1 = 10000;
int lim1 = 5;
int len = 1000000000;
int i = -1;
int [][][] a = new int [lim1][][];

for (i = 0; i < lim1; i++) {
try {
a[i] = new int [len][len];
out.println("i = "+i+" len = "+len+" size "+(len*len));
} catch (OutOfMemoryError e) {
out.println("i = "+i+" len = "+len);
if (len > 20)
len /= 2;
else
break;
}
}
a = null;
out.println("len="+len);
out.println("i="+i);
return 0/*STATUS_PASSED*/;
}

}
-----------------------------------------------------------------------

> javac -d . test.java

> java -version
java version "1.3.0rc2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0rc2-Y)
Java HotSpot(TM) Client VM (build 1.3.0rc2-Y, interpreted mode)

> java -verify p.test
i = 0 len = 1000000000
#
# An unexpected exception has been detected in native code outside the VM.
# Program counter=0xff0c1a20
#

Classic VM successfully executes this test:

> java -classic -version
java version "1.3.0rc2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0rc2-Y)
Classic VM (build 1.3.0rc2-Y, green threads, nojit)

> java -classic -verify p.test
i = 0 len = 1000000000
i = 1 len = 500000000
i = 2 len = 250000000
i = 3 len = 125000000
i = 4 len = 62500000
len=31250000
i=5

Note, that jdk1.3.0A executes this test successfully.

> java -version
java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-A)
HotSpot Core VM (build 1.3beta-A-release, 1.3beta-A-release, interpreted mode,
release build A)

> java -verify p.test
i = 0 len = 1000000000
i = 1 len = 500000000
i = 2 len = 250000000
i = 3 len = 125000000
i = 4 len = 62500000
len=31250000
i=5

There are three tests in JCK (expr05001, expr05601, expr49401) that
can fail because of this bug. Now these tests are excluded because of
another bug.

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