@@ -23,6 +23,7 @@ type TarSum struct {

 	gz                 writeCloseFlusher

 	bufTar             *bytes.Buffer

 	bufGz              *bytes.Buffer

+	bufData            [8192]byte

 	h                  hash.Hash

 	sums               map[string]string

 	currentFile        string

@@ -92,7 +93,12 @@ func (ts *TarSum) Read(buf []byte) (int, error) {

 	if ts.finished {

 		return ts.bufGz.Read(buf)

 	}

-	buf2 := make([]byte, len(buf), cap(buf))

+	var buf2 []byte

+	if len(buf) > 8192 {

+		buf2 = make([]byte, len(buf), cap(buf))

+	} else {

+		buf2 = ts.bufData[:len(buf)-1]

+	}

 	n, err := ts.tarR.Read(buf2)

 	if err != nil {