FULL PRODUCT VERSION :
java version "1.4.2_10"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_10-b03)
Java HotSpot(TM) Client VM (build 1.4.2_10-b03, mixed mode)

The problem occurs also with java version "1.5.0_05".

FULL OS VERSION :
uname -a:
Linux islasker.informatik.uni-stuttgart.de 2.6.12-1.1378_FC3 #1 Wed Sep 14 04:24:31 EDT 2005 i686 i686 i386 GNU/Linux

Intel(R) Pentium(R) 4 CPU 2.00GHz
Also tried Intel(R) Xeon(TM) CPU 3.06GHz with similar effect.

A DESCRIPTION OF THE PROBLEM :
When I run the program below with "java -client ServerBug" it needs about 15 seconds. When I run it with "java -server ServerBug" in most cases it needs about 85 seconds, but in some cases it needs only 5 seconds. When it nedds 5 seconds, compile and run it once again.


THE PROBLEM WAS REPRODUCIBLE WITH -Xint FLAG: Did not try

THE PROBLEM WAS REPRODUCIBLE WITH -server FLAG: Yes

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
javac ServerBug.java
time java -client ServerBug
time java -server ServerBug


EXPECTED VERSUS ACTUAL BEHAVIOR :
The time with option -server should always be lower as with option -client.

REPRODUCIBILITY :
This bug can be reproduced often.

---------- BEGIN SOURCE ----------
public class ServerBug {

    private static final int MAX_VALUE = 1000;

    private static final int ITER_NUMBER = 1000000;

    private static float[] funcValues = new float[0];

    public static float sum(int maxValue, int iterNumber) {
        float sum;

        sum = 0;
        for (int i = 0; i < iterNumber; i++) {
            for (int v = 0; v < maxValue; v++) {
                sum += funcValues[v];
            }
        }
        return sum;
    }

    public static void main(String[] args) {

        funcValues = new float[MAX_VALUE];
        for (int i = 0; i < funcValues.length; i++) {
            funcValues[i] = (float) Math.sqrt(i);
        }

        System.out.println("sum = " + sum(MAX_VALUE, ITER_NUMBER));
    }
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
I haven't found one.