Miserable performance results from MINA 1.1.7

[Zvika Gart]

Hello,
Please help, as this is too strange to be true...

I'm comparing two implementations of the most basic socket server - it
listens for a client, and after accepting it just starts reading data from
it.
The first implementation using Java's plain old ServerSocket:

        ServerSocket srv = new ServerSocket(80);
    Socket s = srv.accept();
    InputStream i = s.getInputStream();
    byte[] buf = new byte[1024 * 8];
    while (true) {
     i.read(buf);
    }

The Second implementation using MINA 1.1.7 (which so simple that I can paste
it here):

First the Main class:

package test;

import java.net.InetSocketAddress;

import org.apache.mina.common.ByteBuffer;
import org.apache.mina.common.IoAcceptor;
import org.apache.mina.common.SimpleByteBufferAllocator;
import org.apache.mina.transport.socket.nio.SocketAcceptor;

public class Main {
    public static void main(String[] args) throws Exception {
        // The following two lines don't help
     ByteBuffer.setUseDirectBuffers(false);
        ByteBuffer.setAllocator(new SimpleByteBufferAllocator());

        IoAcceptor acceptor = new SocketAcceptor();
        acceptor.bind(new InetSocketAddress(80), new MyHandler());
    }
}


And the IoHandler:


package test;

import org.apache.mina.common.IoHandlerAdapter;

public class MyHandler extends IoHandlerAdapter {

}


I wrote a simple client that connects to the server and pumps continuous
data.
Both client and server run on Amazon's EC2 on Debian Linux instances
(64-bit, Java 1.6). Client is in Europe and server in USA.


*The results:*
Simple Java implementation - 5 Mbps
MINA implementation - 750 Kbps

Tried removing the setUseDirectBuffers lines; tried a simpler threading
model by running the IoHandler on the IoProcessor threads... nothing helps -
MINA is capped at 750 Kbps.
What is going on here?!