diff --git a/rego_benchmark_test.go b/rego_benchmark_test.go
new file mode 100644
index 0000000..57a8272
--- /dev/null
+++ b/rego_benchmark_test.go
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2025 alilestera
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package rego_test
+
+import (
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/alilestera/rego"
+)
+
+var runTimes = 100000
+
+var (
+	shortTerm = 10
+	regoCap   = 10000
+	tasks     = 100000
+)
+
+// demoFunc is used to simulate a task that takes a certain amount of time to complete.
+func demoFunc() {
+	time.Sleep(time.Duration(shortTerm) * time.Millisecond)
+}
+
+func BenchmarkRunGoroutines(b *testing.B) {
+	var wg sync.WaitGroup
+	for range b.N {
+		wg.Add(runTimes)
+		for range runTimes {
+			go func() {
+				demoFunc()
+				wg.Done()
+			}()
+		}
+		wg.Wait()
+	}
+}
+
+func BenchmarkRunRego(b *testing.B) {
+	var wg sync.WaitGroup
+	r := rego.New(regoCap)
+	defer r.ReleaseWait()
+
+	b.ResetTimer()
+	for range b.N {
+		wg.Add(runTimes)
+		for range runTimes {
+			r.Submit(func() {
+				demoFunc()
+				wg.Done()
+			})
+		}
+		wg.Wait()
+	}
+}
diff --git a/rego_test.go b/rego_test.go
index 172b7a9..de9a1ae 100644
--- a/rego_test.go
+++ b/rego_test.go
@@ -28,17 +28,6 @@ import (
 	"github.com/alilestera/rego"
 )
 
-var (
-	shortTerm = 10
-	regoCap   = 10000
-	n         = 100000
-)
-
-// demoFunc is used to simulate a task that takes a certain amount of time to complete.
-func demoFunc(n int) {
-	time.Sleep(time.Duration(n) * time.Millisecond)
-}
-
 func TestRegoSubmit(t *testing.T) {
 	defer goleak.VerifyNone(t)
 
@@ -46,11 +35,11 @@ func TestRegoSubmit(t *testing.T) {
 	defer r.ReleaseWait()
 
 	var wg sync.WaitGroup
-	for range n {
+	for range tasks {
 		wg.Add(1)
 		r.Submit(func() {
-			defer wg.Done()
-			demoFunc(shortTerm)
+			demoFunc()
+			wg.Done()
 		})
 	}
 	wg.Wait()
@@ -63,13 +52,13 @@ func TestRegoSubmitWait(t *testing.T) {
 	defer r.ReleaseWait()
 
 	var num int
-	for range n {
+	for range tasks {
 		r.SubmitWait(func() {
 			num++
 		})
 	}
 
-	assert.Equal(t, n, num)
+	assert.Equal(t, tasks, num)
 }
 
 func TestRegoReleaseCompleteWaiting(t *testing.T) {
@@ -79,19 +68,19 @@ func TestRegoReleaseCompleteWaiting(t *testing.T) {
 	var num int32
 	var wg sync.WaitGroup
 
-	for range n {
+	for range tasks {
 		wg.Add(1)
 		go func() {
-			defer wg.Done()
 			r.Submit(func() {
 				atomic.AddInt32(&num, 1)
 			})
+			wg.Done()
 		}()
 	}
 	wg.Wait()
 	r.ReleaseWait()
 
-	assert.Equal(t, n, int(num))
+	assert.Equal(t, tasks, int(num))
 }
 
 func TestRegoReleaseIgnoreWaiting(t *testing.T) {
@@ -101,20 +90,20 @@ func TestRegoReleaseIgnoreWaiting(t *testing.T) {
 	var num int32
 	var wg sync.WaitGroup
 
-	for range n {
+	for range tasks {
 		wg.Add(1)
 		go func() {
-			defer wg.Done()
 			r.Submit(func() {
 				atomic.AddInt32(&num, 1)
 			})
+			wg.Done()
 		}()
 	}
 	wg.Wait()
 	r.Release()
 
 	if r.Waiting() > 0 {
-		assert.NotEqual(t, n, int(num), "must be some tasks are ignored when waiting queue not empty")
+		assert.NotEqual(t, tasks, int(num), "must be some tasks are ignored when waiting queue not empty")
 	}
 }
 
@@ -143,8 +132,8 @@ func TestRegoWithMinWorkers(t *testing.T) {
 	for range minimum {
 		wg.Add(1)
 		r.Submit(func() {
-			defer wg.Done()
-			demoFunc(shortTerm)
+			demoFunc()
+			wg.Done()
 		})
 	}
 	wg.Wait()