diff --git a/callbacks.go b/callbacks.go
index c56db28..ed11fbe 100644
--- a/callbacks.go
+++ b/callbacks.go
@@ -29,11 +29,13 @@ const (
 	NGHTTP2_ERR_DEFERRED                  = -508
 )
 
+/*
 var bufPool = &sync.Pool{
 	New: func() interface{} {
 		return make([]byte, 16*1024)
 	},
 }
+*/
 
 // onDataSourceReadCallback callback function for libnghttp2 library
 // want read data from data provider source,
@@ -50,15 +52,17 @@ func onDataSourceReadCallback(ptr unsafe.Pointer, streamID C.int,
 		//log.Println("client dp callback, stream not exists")
 		return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE
 	}
-	//gobuf := make([]byte, int(length))
-	_length := int(length)
-	gobuf := bufPool.Get().([]byte)
-	if len(gobuf) < _length {
-		gobuf = make([]byte, _length)
-	}
-	defer bufPool.Put(gobuf)
+	gobuf := make([]byte, int(length))
+	/*
+		_length := int(length)
+		gobuf := bufPool.Get().([]byte)
+		if len(gobuf) < _length {
+			gobuf = make([]byte, _length)
+		}
+		defer bufPool.Put(gobuf)
+	*/
 
-	n, err := s.dp.Read(gobuf[:_length])
+	n, err := s.dp.Read(gobuf[0:])
 	if err != nil {
 		if err == io.EOF {
 			//log.Println("onDataSourceReadCallback end")