diff --git a/cowmap_bench_test.go b/cowmap_bench_test.go
new file mode 100644
index 0000000..c44ac48
--- /dev/null
+++ b/cowmap_bench_test.go
@@ -0,0 +1,212 @@
+package eventbus
+
+import (
+	"strconv"
+	"sync"
+	"testing"
+)
+
+func BenchmarkSingleGoroutineStoreAbsentByMap(b *testing.B) {
+	m := make(map[string]any)
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m[strconv.Itoa(i)] = "value"
+	}
+}
+
+func BenchmarkSingleGoroutineStoreAbsentBySyncMap(b *testing.B) {
+	var m sync.Map
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.Store(strconv.Itoa(i), "value")
+	}
+}
+
+func BenchmarkSingleGoroutineStoreAbsentByCowMap(b *testing.B) {
+	m := NewCowMap()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.Store(strconv.Itoa(i), "value")
+	}
+}
+
+func BenchmarkSingleGoroutineStorePresentByMap(b *testing.B) {
+	m := make(map[string]any)
+	m["key"] = "value"
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m["key"] = "value"
+	}
+}
+
+func BenchmarkSingleGoroutineStorePresentBySyncMap(b *testing.B) {
+	var m sync.Map
+	m.Store("key", "value")
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.Store("key", "value")
+	}
+}
+
+func BenchmarkSingleGoroutineStorePresentByCowMap(b *testing.B) {
+	m := NewCowMap()
+	m.Store("key", "value")
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.Store("key", "value")
+	}
+}
+
+func BenchmarkMultiGoroutineLoadDifferentBySyncMap(b *testing.B) {
+	var m sync.Map
+	finished := make(chan struct{}, b.N)
+	for i := 0; i < 1000; i++ {
+		m.Store(i, i)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		go func() {
+			for j := 0; j < 1000; j++ {
+				m.Load(j)
+			}
+			finished <- struct{}{}
+		}()
+	}
+	for i := 0; i < b.N; i++ {
+		<-finished
+	}
+}
+
+func BenchmarkMultiGoroutineLoadDifferentByCowMap(b *testing.B) {
+	m := NewCowMap()
+	finished := make(chan struct{}, b.N)
+	for i := 0; i < 1000; i++ {
+		m.Store(i, i)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		go func() {
+			for j := 0; j < 1000; j++ {
+				m.Load(j)
+			}
+			finished <- struct{}{}
+		}()
+	}
+	for i := 0; i < b.N; i++ {
+		<-finished
+	}
+}
+
+func BenchmarkMultiGoroutineLoadSameBySyncMap(b *testing.B) {
+	var m sync.Map
+	finished := make(chan struct{}, b.N)
+	m.Store("key", "value")
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		go func() {
+			for i := 0; i < 10; i++ {
+				m.Load("key")
+			}
+			finished <- struct{}{}
+		}()
+	}
+	for i := 0; i < b.N; i++ {
+		<-finished
+	}
+}
+
+func BenchmarkMultiGoroutineLoadSameByCowMap(b *testing.B) {
+	m := NewCowMap()
+	finished := make(chan struct{}, b.N)
+	m.Store("key", "value")
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		go func() {
+			for i := 0; i < 10; i++ {
+				m.Load("key")
+			}
+			finished <- struct{}{}
+		}()
+	}
+	for i := 0; i < b.N; i++ {
+		<-finished
+	}
+}
+
+func Benchmark_CowMapStore(b *testing.B) {
+	m := NewCowMap()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.Store(i, strconv.Itoa(i))
+	}
+}
+
+func Benchmark_CowMapLoad(b *testing.B) {
+	m := NewCowMap()
+	for i := 0; i < 1000; i++ {
+		m.Store(i, strconv.Itoa(i))
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.Load(i % 1000)
+	}
+}
+
+func Benchmark_SyncMapStore(b *testing.B) {
+	var m sync.Map
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.Store(i, strconv.Itoa(i))
+	}
+}
+
+func Benchmark_SyncMapLoad(b *testing.B) {
+	var m sync.Map
+	for i := 0; i < 1000; i++ {
+		m.Store(i, strconv.Itoa(i))
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		m.Load(i % 1000)
+	}
+}
+
+// func BenchmarkMultiGoroutineStoreDifferentBySyncMap(b *testing.B) {
+// 	var m sync.Map
+// 	finished := make(chan struct{}, b.N)
+
+// 	b.ResetTimer()
+// 	for i := 0; i < b.N; i++ {
+// 		go func(k string, v any) {
+// 			for i := 0; i < 10; i++ {
+// 				m.Store(k, v)
+// 			}
+// 			finished <- struct{}{}
+// 		}(strconv.Itoa(i), "value")
+// 	}
+// 	for i := 0; i < b.N; i++ {
+// 		<-finished
+// 	}
+// }
+
+// func BenchmarkMultiGoroutineStoreDifferentByCowMap(b *testing.B) {
+// 	m := NewCowMap()
+// 	finished := make(chan struct{}, b.N)
+
+// 	b.ResetTimer()
+// 	for i := 0; i < b.N; i++ {
+// 		go func(k string, v any) {
+// 			for i := 0; i < 10; i++ {
+// 				m.Store(k, v)
+// 			}
+// 			finished <- struct{}{}
+// 		}(strconv.Itoa(i), "value")
+// 	}
+// 	for i := 0; i < b.N; i++ {
+// 		<-finished
+// 	}
+// }
diff --git a/cowmap_test.go b/cowmap_test.go
index d7317bd..8304ba3 100644
--- a/cowmap_test.go
+++ b/cowmap_test.go
@@ -246,23 +246,3 @@ func Test_CowMapStoreAndLoadConcurrent(t *testing.T) {
 		loadWg.Wait()
 	})
 }
-
-func Benchmark_CowMapStore(b *testing.B) {
-	m := NewCowMap()
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		m.Store(i, strconv.Itoa(i))
-	}
-}
-
-func Benchmark_CowMapLoad(b *testing.B) {
-	m := NewCowMap()
-	for i := 0; i < 100; i++ {
-		m.Store(i, strconv.Itoa(i))
-	}
-
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		m.Load(i % 100)
-	}
-}
diff --git a/pipe_bench_test.go b/pipe_bench_test.go
new file mode 100644
index 0000000..dd61b1d
--- /dev/null
+++ b/pipe_bench_test.go
@@ -0,0 +1,43 @@
+package eventbus
+
+import (
+	"testing"
+)
+
+func BenchmarkPipePublishSync(b *testing.B) {
+	pipe := NewPipe[int]()
+
+	pipe.Subscribe(pipeHandlerOne)
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		pipe.PublishSync(i)
+	}
+}
+
+func BenchmarkPipePublish(b *testing.B) {
+	pipe := NewPipe[int]()
+
+	pipe.Subscribe(pipeHandlerOne)
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		pipe.Publish(i)
+	}
+}
+
+func BenchmarkPipeGoChannel(b *testing.B) {
+	ch := make(chan int)
+
+	go func() {
+		for {
+			val := <-ch
+			pipeHandlerOne(val)
+		}
+	}()
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		ch <- i
+	}
+}
diff --git a/pipe_test.go b/pipe_test.go
index 11b0630..05e64a2 100644
--- a/pipe_test.go
+++ b/pipe_test.go
@@ -130,30 +130,3 @@ func Test_PipeClose(t *testing.T) {
 	assert.Equal(t, ErrChannelClosed, err)
 	p.Close()
 }
-
-func BenchmarkPipePublish(b *testing.B) {
-	pipe := NewPipe[int]()
-
-	pipe.Subscribe(pipeHandlerOne)
-
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		pipe.PublishSync(i)
-	}
-}
-
-func BenchmarkPipeGoChannel(b *testing.B) {
-	ch := make(chan int)
-
-	go func() {
-		for {
-			val := <-ch
-			pipeHandlerOne(val)
-		}
-	}()
-
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		ch <- i
-	}
-}