fixed issue #726 , 优化完毕

driver/src/main/java/com/alibaba/otter/canal/parse/driver/mysql/socket/BioSocketChannel.java

@@ -1,5 +1,6 @@
 package com.alibaba.otter.canal.parse.driver.mysql.socket;
 
+import java.io.BufferedInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -24,7 +25,7 @@ public class BioSocketChannel implements SocketChannel {
 
     BioSocketChannel(Socket socket) throws IOException{
         this.socket = socket;
-        this.input = socket.getInputStream();
+        this.input = new BufferedInputStream(socket.getInputStream(), 16384);
         this.output = socket.getOutputStream();
     }
 
@@ -164,5 +165,4 @@ public class BioSocketChannel implements SocketChannel {
         this.socket = null;
     }
 
-
 }

driver/src/main/java/com/alibaba/otter/canal/parse/driver/mysql/socket/BioSocketChannelPool.java

@@ -16,6 +16,8 @@ public abstract class BioSocketChannelPool {
         socket.setKeepAlive(true);
         socket.setReuseAddress(true);
         socket.connect(address, BioSocketChannel.DEFAULT_CONNECT_TIMEOUT);
+        System.out.println(socket.getReceiveBufferSize());
+        System.out.println(socket.getSendBufferSize());
         return new BioSocketChannel(socket);
     }