diff --git a/README.md b/README.md
index 25adcf6..d07cdc0 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,21 @@
 jvm-serializer
 ==============
+## Environment
+### Hardware: 
+####  Intel(R) Core(TM) i5-3230M CPU @ 2.60GHz,4 core 8G mem
+### Software:
+#### kernel 3.13.0-43-generic,x86_64 GNU/Linux
+#### Java HotSpot(TM) 64-Bit Server VM 1.7.0_25
+
+## Description
+This project is a function and performance benchmark test for kyro3,fastjson and hessian codec(Serialize and Deserialize).which are most popular non-schema Serialize and Deserialize tools nowadays. 
+### Test case
+#### 1.After 12000 times warm up op,do 5000 times codec loop.recycle this procedure 10 times.
+#### 2.Consider some special java type,such as BitEnum,EnumSet etc...
+### Report
+| Tool          | size        | cost(ms)  |
+| ------------- |-------------| ----------|
+| Kryo3         |  79         | 79        |
+| Fastjson      |  340        | 196       |
+| Hessian4      |  718        | 342       |
+
diff --git a/src/main/java/com/creative/commons/utils/KryoCodec.java b/src/main/java/com/creative/commons/utils/KryoCodec.java
index 1fcbda5..3acf01f 100644
--- a/src/main/java/com/creative/commons/utils/KryoCodec.java
+++ b/src/main/java/com/creative/commons/utils/KryoCodec.java
@@ -88,8 +88,8 @@ public static synchronized void registerClass(Class<?> className, Serializer<?>
         idList.add(id);
     }
 
-    public static synchronized void register(Class<?> className){
-          getKryo().register(className);
+    public static synchronized void register(Class<?> className) {
+        getKryo().register(className);
     }
 
     public static Kryo getKryo() {
@@ -102,7 +102,8 @@ public static Object decode(byte[] bytes) throws Exception {
     }
 
     public static byte[] encode(Object object) throws Exception {
-        Output output = new Output(1024 * 1024);
+        //4K
+        Output output = new Output(4096);
         getKryo().writeClassAndObject(output, object);
         return output.toBytes();
     }
diff --git a/src/test/java/com/creative/commons/utils/HessianCodecTest.java b/src/test/java/com/creative/commons/utils/HessianCodecTest.java
index 16ebad6..5fccc4c 100644
--- a/src/test/java/com/creative/commons/utils/HessianCodecTest.java
+++ b/src/test/java/com/creative/commons/utils/HessianCodecTest.java
@@ -22,6 +22,7 @@ public class HessianCodecTest extends CodecTest{
     public void hessianCodecTest() throws Throwable {
         Father father = new Father();
         byte[] obj1 = HessianCodec.encode(father);
+        System.out.println(obj1.length);
         Father fatherCopy = (Father) HessianCodec.decode(obj1);
 
         //Timestamp type is null
diff --git a/src/test/java/com/creative/commons/utils/JsonCodecTest.java b/src/test/java/com/creative/commons/utils/JsonCodecTest.java
index 84d6795..875b409 100644
--- a/src/test/java/com/creative/commons/utils/JsonCodecTest.java
+++ b/src/test/java/com/creative/commons/utils/JsonCodecTest.java
@@ -14,6 +14,7 @@ public class JsonCodecTest extends CodecTest{
     public void jsonCodecTest() {
         Father father = new Father();
         byte[] obj1 = JsonCodec.encode(father);
+        System.out.println(obj1.length);
         Father fatherCopy = JsonCodec.decode(obj1, Father.class);
 
         //Timestamp type
diff --git a/src/test/java/com/creative/commons/utils/KryoCodecTest.java b/src/test/java/com/creative/commons/utils/KryoCodecTest.java
index f4dbc32..c02fa00 100644
--- a/src/test/java/com/creative/commons/utils/KryoCodecTest.java
+++ b/src/test/java/com/creative/commons/utils/KryoCodecTest.java
@@ -5,11 +5,12 @@
 import com.creative.model.Message;
 import com.creative.model.Son;
 import com.google.common.base.Stopwatch;
+import org.junit.Assert;
 import org.junit.Test;
 
 import java.util.concurrent.TimeUnit;
 
-public class KryoCodecTest extends CodecTest{
+public class KryoCodecTest extends CodecTest {
     @Test
     public void kryoCodecMultiTest() throws Exception {
         //Warmup
@@ -50,8 +51,11 @@ public void kyroCodecTest() throws Exception {
 
         Father father = new Father();
         byte[] obj1 = KryoCodec.encode(father);
+        System.out.println(obj1.length);
         Father fatherCopy = (Father) KryoCodec.decode(obj1);
 
+        Assert.assertEquals(father, fatherCopy);
+
         //Timestamp type
         //System.out.println(fatherCopy.getLocation_time());
         //System.out.println(father.getLocation_time());