FULL PRODUCT VERSION :
[gat@MyLaptop ~]$ /home/gat/JAVA/JDK16/jdk1.6.0_b78/bin/java -version
java version "1.6.0-beta2"
Java(TM) SE Runtime Environment (build 1.6.0-beta2-b78)
Java HotSpot(TM) Client VM (build 1.6.0-beta2-b78, mixed mode, sharing)
[gat@MyLaptop ~]$


ADDITIONAL OS VERSION INFORMATION :
[gat@MyLaptop ~]$ uname -a
Linux MyLaptop.gatworks.com 2.6.11-1.1369_FC4 #1 Thu Jun 2 22:55:56 EDT 2005 i686 i686 i386 GNU/Linux
[gat@MyLaptop ~]$


A DESCRIPTION OF THE PROBLEM :
Tried the next beta snapshot release. Program startup time took a bit longer than usual, that I taught it was spinning.
After 200 seconds the process idled. With a few ^\, i was able to see that the program was reading the compressed data file. That routine used to take some 17-19 seconds. Now it takes nearly 200 seconds.

REGRESSION.  Last worked in version mustang

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the attached source code against a compressed binary file.


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
/*
 * Main.java
 *
 * Created on April 4, 2006, 9:33 AM
 *
 * To change this template, choose Tools | Options and locate the
template under
 * the Source Creation and Management node. Right-click the template
and choose
 * Open. You can then make changes to the template in the Source Editor.
 */
/* Copyright (c) 2006 U. George, Gatworks.com. All rights reserved. */

//package slowread;

/**
 *
 * @author gat
 */
import java.io.*;
import  java.util.*;
import  java.util.zip.*;

public class Main {
    
    /** Creates a new instance of Main */
    public Main() {
        rOpen();
    }
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        new Main();
    }
    
    DataInputStream     in = null;
    RandomAccessFile    ra = null, rb = null;
    
    void
            rOpen() {
        long startTime = Calendar.getInstance().getTimeInMillis();
        
        try {
            String filename  = "GpsDataUSB17.gz";
            String directory = "";
            directory = ( directory.equals("") ) ? "" : directory +
                    File.separatorChar;
            File f = new File( directory + filename );
            System.out.println("GpsData_FilePortBinary.open(): Opening Binary Data file: " + f.getAbsolutePath() + ". "
                    + ( f.exists() ? " (File Found)" : " (File Not Found)" ));
            if (! f.exists() )
                return ;
            FileInputStream fr = new FileInputStream( f );
            BufferedInputStream isr = null;
            try {
                GZIPInputStream gz = new GZIPInputStream( fr );
                isr = new BufferedInputStream( gz );
            } catch ( Exception e ) {
                if ( e instanceof java.io.IOException
                        ||   e instanceof java.io.EOFException ) {
                    isr = new BufferedInputStream( fr );
                } else
                    e.printStackTrace();
            }
            in = new DataInputStream( isr );
        } catch( Exception e ){ e.printStackTrace(); return; }
        
        File f;
        try {
            f = File.createTempFile( "jGPSf", ".tmp");
            ra = new RandomAccessFile( f, "rw" );
            f.deleteOnExit();
            f = File.createTempFile( "jGPSg", ".tmp");
            rb = new RandomAccessFile( f, "rw" );
            //f.deleteOnExit();
            f.delete();
        } catch( Exception e ) { e.printStackTrace(); ra = rb = null;
        return; }
        int pos = 0;
        int gpsInputPos = 0;
        byte[] gpsBuf = new byte[ 8000 ];
        byte[] buf = new byte[80];
        byte[]  b = null;
        while ( ( b = readBinaryPacket()) != null ) {
            //System.out.println("Writing line "+new String(b));
            try {
                rb.writeInt((int) ra.getFilePointer() );
                ra.write( b );
            } catch ( Exception e ) { e.printStackTrace(); }
        }
        long endTime = Calendar.getInstance().getTimeInMillis();
        long diffTime = endTime - startTime;
        System.out.println("FilePort_Binary.rOpen(); time to read="
                +(diffTime/1000) + "." + (diffTime%1000) + " seconds" );
        try {
            in.close();
        } catch ( Exception e ) {}
        return;
    }
    byte[]
            readBinaryPacket() {
        
        try {
            int majic = in.readInt();
            if ( majic != 0xdeadbeef ) {
                System.out.println("WrongMajic. received "
                        + Integer.toHexString( majic )
                        + " should be "
                        + Integer.toHexString(0xdeadbeef )+" at file position " );
                
                return null;
            }
            long time  = in.readLong();
            int len   = in.readInt();
            byte[] buf = new byte[ len ];
            in.readFully(buf);
            int majic2 = in.readInt();
            if ( majic2 != 0xbeefdead ) {
                System.out.println("BadMajic2 ");
                System.out.println("Majic2="+Integer.toHexString(
                        majic2 ));
                Date d = new Date( time );
                System.out.println("len="+len);
                return null;
            }
            return buf;
        } catch ( java.io.EOFException e ) {
            if ( e.getMessage().equals( "Unexpected end of ZLIB input stream" ) ) {
                System.out.println("FilePort_Binary.readBinaryPacket();"+
                        " Unexpected end of ZLIB input stream" + " Continueing");
            }
        } catch( Exception e ) { e.printStackTrace(); }
        
        System.out.println("Returning null");
        return null;
    }
}
---------- END SOURCE ----------