Serialization much slower in .NET 2.0

I tested Java serialization/deserialization with both .Net 1.1 und 2.0 and recognized that 2.0 is much slower, especially on deserialization. Here are my results in seconds for 5 iterations:

.Net 1.1:
Serialize-Duration 0: 00:00:01.3920016
Deserialize-Duration 0: 00:00:01.6223328
Serialize-Duration 1: 00:00:01.1917136
Deserialize-Duration 1: 00:00:01.5722608
Serialize-Duration 2: 00:00:01.2217568
Deserialize-Duration 2: 00:00:01.6123184
Serialize-Duration 3: 00:00:01.2918576
Deserialize-Duration 3: 00:00:01.5221888
Serialize-Duration 4: 00:00:01.3519440
Deserialize-Duration 4: 00:00:01.5322032

.Net 2.0:
Serialize-Duration 0: 00:00:01.8126064
Deserialize-Duration 0: 00:00:02.9342192
Serialize-Duration 1: 00:00:01.7224768
Deserialize-Duration 1: 00:00:02.9442336
Serialize-Duration 2: 00:00:01.7425056
Deserialize-Duration 2: 00:00:02.9442336
Serialize-Duration 3: 00:00:01.7324912
Deserialize-Duration 3: 00:00:02.9141904
Serialize-Duration 4: 00:00:01.7324912
Deserialize-Duration 4: 00:00:02.9642624

Here is the source code of the test program:
---------------------
package SlowPerformance;

import java.io.*;

public class Class1
{
public static class Person implements Serializable
{
private static final long serialVersionUID = -6216517144513189897L;

public String _firstname;
public String _lastname;
public int _age;
public Address[] _addresses;

public Person() { }

public Person(String firstname, String lastname, int age)
{
_firstname = firstname;
_lastname = lastname;
_age = age;
_addresses = new Address[]
{
new Address("Somestreet", 18, "London"),
new Address("Anystreet", 82, "New York"),
new Address("Anyway", 819, "Berlin")
};
}
}

public static class Address implements Serializable
{
private static final long serialVersionUID = 1784371920273890692L;

private String _street;
private int _number;
private String _city;
private double _income;

public Address() { }

public Address(String street, int number, String city)
{
_street = street;
_number = number;
_city = city;
_income = Math.random();
}
}

public static void main(String[] args) throws Exception
{
Person[] persons = new Person[10000];
for (int i = 0; i < persons.length; i++)
persons Idea

= new Person("Mike " + i, "LastName " + i, 20 + (i % 20));

for (int i = 0; i < 5; i++)
{
// Write objects
byte[] data;
{
System.DateTime start = System.DateTime.get_Now();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(baos);
oos.writeObject(persons);
oos.close();
data = baos.toByteArray();
System.Console.WriteLine("Serialize-Duration " + i + ": " + System.DateTime.get_Now().Subtract(start));
}

// Read objects
{
System.DateTime start = System.DateTime.get_Now();
ByteArrayInputStream bais = new ByteArrayInputStream(data);
ObjectInputStream ois = new ObjectInputStream(bais);
Person[] persons2 = (Person[])ois.readObject();
ois.close();
System.Console.WriteLine("Deserialize-Duration " + i + ": " + System.DateTime.get_Now().Subtract(start));
}
}
}
}
-----------------------

Thank you very much for any hints.

Best regards,

Michael

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