This is a follow-on to bug 
5048019: Huge performance regression in javadoc in Tiger b40 for deeply inherited classes

Dear Sirs,

I don't consider this bug as beeing fixed in Tiger (1.5) build b59 as stated in 
http://java.sun.com/j2se/1.5.0/snapshots/jdk15.b59.bugsfixed.list.html. My small 
test showing the problem uses ten classes (see below) extending JPanel.

Using the follwing command:

javadoc -sourcepath . -classpath . -subpackages de -breakiterator -d ./doc -private -encoding iso8859-1 -use -splitindex

for jdk1.4.2_04, jdk1.5.0-beta3-b57 and jdk1.5.0-beta3-b59 gives me the 
following execution times on my system:

jdk version        | time/sec. | factor
---------------------------------------
jdk1.4.2_04        |     6.5   |  1.0
jdk1.5.0-beta3-b57 |    90.0   | 13.8
jdk1.5.0-beta3-b59 |    37.4   |  5.8

Even jdk1.5.0-beta3-b59 is more than two times faster than jdk1.5.0-beta3-b57 it 
is still a lot slower (about six times) than jdk1.4.2_04 which makes it nearly 
useless for large projects. Please do invest some more time to resolve this 
problem.

Best regards,
MG


Sample classes used for my test:

package de.mypackage;
import javax.swing.*;
/**
 * A derived JPanel.
 */
public class MyPanel0 extends JPanel {
    /**
     * Create a new MyPanel0 object.
     */
    public MyPanel0() {
        super();
    }
    /**
     * A dummy method.
     *
     * @param aValue    The value to be returned from this method.
     *
     * @return  The value given to this method.
     */
    public int someMethod(int aValue) {
        return aValue;
    }
}

package de.mypackage;
import javax.swing.*;
/**
 * A derived JPanel.
 */
public class MyPanel1 extends JPanel {
    /**
     * Create a new MyPanel1 object.
     */
    public MyPanel1() {
        super();
    }
    /**
     * A dummy method.
     *
     * @param aValue    The value to be returned from this method.
     *
     * @return  The value given to this method.
     */
    public int someMethod(int aValue) {
        return aValue;
    }
}

package de.mypackage;
import javax.swing.*;
/**
 * A derived JPanel.
 */
public class MyPanel2 extends JPanel {
    /**
     * Create a new MyPanel2 object.
     */
    public MyPanel2() {
        super();
    }
    /**
     * A dummy method.
     *
     * @param aValue    The value to be returned from this method.
     *
     * @return  The value given to this method.
     */
    public int someMethod(int aValue) {
        return aValue;
    }
}

package de.mypackage;
import javax.swing.*;
/**
 * A derived JPanel.
 */
public class MyPanel3 extends JPanel {
    /**
     * Create a new MyPanel3 object.
     */
    public MyPanel3() {
        super();
    }
    /**
     * A dummy method.
     *
     * @param aValue    The value to be returned from this method.
     *
     * @return  The value given to this method.
     */
    public int someMethod(int aValue) {
        return aValue;
    }
}

package de.mypackage;
import javax.swing.*;
/**
 * A derived JPanel.
 */
public class MyPanel4 extends JPanel {
    /**
     * Create a new MyPanel4 object.
     */
    public MyPanel4() {
        super();
    }
    /**
     * A dummy method.
     *
     * @param aValue    The value to be returned from this method.
     *
     * @return  The value given to this method.
     */
    public int someMethod(int aValue) {
        return aValue;
    }

Additional classes missing because of size limit for comments.


2004-07-28 18:31:49
f?ge

Hello,

I agree with mgoe, because my experience is much the same.

Generating javadoc for my framework took around one minute from 1.4 up to 1.5beta2,
but with 1.5beta3-b55 it took about 9 minutes, whereas now, under b59, it takes 4 minutes: still four times longer!

The number of jdk source files to lookup increased in the tiger release "only" by 20-25 percent,
so this performance decrease of javadoc is not a decoration in the evolution of the java platform.

Regards
AF
###@###.### 10/15/04 03:44 GMT