diff --git a/ants_benchmark_test.go b/ants_benchmark_test.go
index 274ba1c..5ce9e2b 100644
--- a/ants_benchmark_test.go
+++ b/ants_benchmark_test.go
@@ -6,7 +6,7 @@ import (
 	"sync"
 )
 
-const RunTimes = 10000000
+const RunTimes = 1000000
 
 func BenchmarkGoroutine(b *testing.B) {
 	for i := 0; i < b.N; i++ {
diff --git a/ants_test.go b/ants_test.go
index a8b79a6..e349a6d 100644
--- a/ants_test.go
+++ b/ants_test.go
@@ -4,8 +4,8 @@ import (
 	"testing"
 	"github.com/panjf2000/ants"
 	"sync"
-	"runtime"
 	"time"
+	"runtime"
 )
 
 var n = 1000000
@@ -35,6 +35,7 @@ func TestNoPool(t *testing.T) {
 		wg.Add(1)
 		go func() {
 			forSleep()
+			//demoFunc()
 			wg.Done()
 		}()
 	}
@@ -51,31 +52,39 @@ func TestDefaultPool(t *testing.T) {
 		wg.Add(1)
 		ants.Push(func() {
 			forSleep()
+			//demoFunc()
 			wg.Done()
 		})
 	}
 	wg.Wait()
 
 	//t.Logf("pool capacity:%d", ants.Cap())
-	//t.Logf("running workers number:%d", ants.Running())
 	//t.Logf("free workers number:%d", ants.Free())
 
+	t.Logf("running workers number:%d", ants.Running())
 	mem := runtime.MemStats{}
 	runtime.ReadMemStats(&mem)
 	t.Logf("memory usage:%d", mem.TotalAlloc/1024)
 }
 
-//func TestCustomPool(t *testing.T) {
-//	p := ants.NewPool(1000)
-//	for i := 0; i < n; i++ {
-//		p.Push(demoFunc)
-//	}
-//
-//	t.Logf("pool capacity:%d", p.Cap())
-//	t.Logf("running workers number:%d", p.Running())
-//	t.Logf("free workers number:%d", p.Free())
-//
-//	mem := runtime.MemStats{}
-//	runtime.ReadMemStats(&mem)
-//
-//}
+func TestCustomPool(t *testing.T) {
+	p := ants.NewPool(30000)
+	var wg sync.WaitGroup
+	for i := 0; i < n; i++ {
+		wg.Add(1)
+		p.Push(func() {
+			forSleep()
+			//demoFunc()
+			wg.Done()
+		})
+	}
+	wg.Wait()
+
+	//t.Logf("pool capacity:%d", p.Cap())
+	//t.Logf("free workers number:%d", p.Free())
+
+	t.Logf("running workers number:%d", p.Running())
+	mem := runtime.MemStats{}
+	runtime.ReadMemStats(&mem)
+	t.Logf("memory usage:%d", mem.TotalAlloc/1024)
+}
diff --git a/pool.go b/pool.go
index a7ee612..83e80ec 100644
--- a/pool.go
+++ b/pool.go
@@ -32,20 +32,6 @@ func NewPool(size int) *Pool {
 }
 
 //-------------------------------------------------------------------------
-//func (p *Pool) loop() {
-//	for i := 0; i < runtime.GOMAXPROCS(-1); i++ {
-//		go func() {
-//			for {
-//				select {
-//				case <-p.launchSignal:
-//					p.getWorker().sendTask(p.tasks.pop().(f))
-//				case <-p.destroy:
-//					return
-//				}
-//			}
-//		}()
-//	}
-//}
 
 func (p *Pool) Push(task f) error {
 	if len(p.destroy) > 0 {
@@ -79,70 +65,7 @@ func (p *Pool) Destroy() error {
 
 //-------------------------------------------------------------------------
 
-func (p *Pool) reachLimit() bool {
-	return p.Running() >= p.Cap()
-}
-
-//func (p *Pool) newWorker() *Worker {
-//	var w *Worker
-//	if p.reachLimit() {
-//		<-p.freeSignal
-//		return p.getWorker()
-//	}
-//	wp := p.workerPool.Get()
-//	if wp == nil {
-//		w = &Worker{
-//			pool: p,
-//			task: make(chan f),
-//		}
-//	} else {
-//		w = wp.(*Worker)
-//	}
-//	w.run()
-//	atomic.AddInt32(&p.running, 1)
-//	return w
-//}
-//
-//func (p *Pool) getWorker() *Worker {
-//	var w *Worker
-//	p.lock.Lock()
-//	workers := p.workers
-//	n := len(workers) - 1
-//	if n < 0 {
-//		p.lock.Unlock()
-//		return p.newWorker()
-//	} else {
-//		w = workers[n]
-//		workers[n] = nil
-//		p.workers = workers[:n]
-//		//atomic.AddInt32(&p.running, 1)
-//	}
-//	p.lock.Unlock()
-//	return w
-//}
-
-//func (p *Pool) newWorker() *Worker {
-//	var w *Worker
-//	if p.reachLimit() {
-//		<-p.freeSignal
-//		return p.getWorker()
-//	}
-//	wp := p.workerPool.Get()
-//	if wp == nil {
-//		w = &Worker{
-//			pool: p,
-//			task: make(chan f),
-//		}
-//	} else {
-//		w = wp.(*Worker)
-//	}
-//	w.run()
-//	atomic.AddInt32(&p.running, 1)
-//	return w
-//}
-
 func (p *Pool) getWorker() *Worker {
-	//fmt.Printf("init running workers number:%d\n", p.running)
 	var w *Worker
 	waiting := false
 
@@ -150,7 +73,6 @@ func (p *Pool) getWorker() *Worker {
 	workers := p.workers
 	n := len(workers) - 1
 	if n < 0 {
-		//fmt.Printf("running workers number:%d\n", p.running)
 		if p.running >= p.capacity {
 			waiting = true
 		}
@@ -158,15 +80,11 @@ func (p *Pool) getWorker() *Worker {
 		w = workers[n]
 		workers[n] = nil
 		p.workers = workers[:n]
-		//atomic.AddInt32(&p.running, 1)
 	}
 	p.lock.Unlock()
 
 	if waiting {
 		<-p.freeSignal
-		//p.lock.Lock()
-		//fmt.Println("wait for a worker")
-		//fmt.Println("get for a worker")
 		for {
 			p.lock.Lock()
 			workers = p.workers
@@ -181,7 +99,6 @@ func (p *Pool) getWorker() *Worker {
 			p.lock.Unlock()
 			break
 		}
-		//p.lock.Unlock()
 	} else {
 		wp := p.workerPool.Get()
 		if wp == nil {
@@ -204,5 +121,4 @@ func (p *Pool) putWorker(worker *Worker) {
 	p.workers = append(p.workers, worker)
 	p.lock.Unlock()
 	p.freeSignal <- sig{}
-	//fmt.Printf("put a worker, running worker number:%d\n", p.Running())
 }