diff --git a/internal/utils/byte_pool_test.go b/internal/utils/byte_pool_test.go
index 04c1faf..ed13e7d 100644
--- a/internal/utils/byte_pool_test.go
+++ b/internal/utils/byte_pool_test.go
@@ -1,6 +1,8 @@
-package utils
+package utils_test
 
 import (
+	"bytes"
+	"github.com/TeaOSLab/EdgeNode/internal/utils"
 	"runtime"
 	"sync"
 	"testing"
@@ -10,7 +12,7 @@ func TestBytePool_Memory(t *testing.T) {
 	var stat1 = &runtime.MemStats{}
 	runtime.ReadMemStats(stat1)
 
-	var pool = NewBytePool(32 * 1024)
+	var pool = utils.NewBytePool(32 * 1024)
 	for i := 0; i < 20480; i++ {
 		pool.Put(make([]byte, 32*1024))
 	}
@@ -29,7 +31,7 @@ func TestBytePool_Memory(t *testing.T) {
 func BenchmarkBytePool_Get(b *testing.B) {
 	runtime.GOMAXPROCS(1)
 
-	var pool = NewBytePool(1)
+	var pool = utils.NewBytePool(1)
 	b.ResetTimer()
 
 	for i := 0; i < b.N; i++ {
@@ -42,7 +44,7 @@ func BenchmarkBytePool_Get(b *testing.B) {
 func BenchmarkBytePool_Get_Parallel(b *testing.B) {
 	runtime.GOMAXPROCS(1)
 
-	var pool = NewBytePool(1024)
+	var pool = utils.NewBytePool(1024)
 	b.ResetTimer()
 
 	b.RunParallel(func(pb *testing.PB) {
@@ -72,3 +74,20 @@ func BenchmarkBytePool_Get_Sync(b *testing.B) {
 		}
 	})
 }
+
+func BenchmarkBytePool_Copy(b *testing.B) {
+	var data = bytes.Repeat([]byte{'A'}, 8<<10)
+
+	var pool = &sync.Pool{
+		New: func() any {
+			return make([]byte, 8<<10)
+		},
+	}
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			var buf = pool.Get().([]byte)
+			copy(buf, data)
+			pool.Put(buf)
+		}
+	})
+}