diff --git a/g/os/grpool/grpool_api.go b/g/os/grpool/grpool_api.go
index 2af65b644..e3d66bd8f 100644
--- a/g/os/grpool/grpool_api.go
+++ b/g/os/grpool/grpool_api.go
@@ -121,5 +121,4 @@ func (p *Pool) Close() {
     p.SetExpire(-1)
     p.stopEvents <- struct{}{} // 通知workloop
     p.stopEvents <- struct{}{} // 通知clearloop
-
 }
\ No newline at end of file
diff --git a/g/os/grpool/grpool_pool.go b/g/os/grpool/grpool_pool.go
index 0bb1a5d25..17b52bddd 100644
--- a/g/os/grpool/grpool_pool.go
+++ b/g/os/grpool/grpool_pool.go
@@ -58,7 +58,6 @@ func (p *Pool) startClearLoop() {
 
 // 判断是否达到goroutine上上限
 func (p *Pool) reachSizeLimit() bool {
-    return false
     return atomic.LoadInt32(&p.number) >= atomic.LoadInt32(&p.size)
 }
 
@@ -70,13 +69,13 @@ func (p *Pool) getExpire() int32 {
 // 创建一个空的任务对象
 func (p *Pool) newJob() *PoolJob {
     // 如果达到goroutine数限制，那么阻塞等待有空闲goroutine后继续
-    //if p.reachSizeLimit() {
-    //    // 阻塞等待空闲goroutine
-    //    select {
-    //        case <- p.freeEvents:
-    //            return p.getJob()
-    //    }
-    //}
+    if p.reachSizeLimit() {
+        // 阻塞等待空闲goroutine
+        select {
+            case <- p.freeEvents:
+                return p.getJob()
+        }
+    }
     j := &PoolJob {
         job  : make(chan func(), 1),
         pool : p,
@@ -93,9 +92,9 @@ func (p *Pool) addJob(j *PoolJob) bool {
     }
     p.queue.PushBack(j)
     // 如果当前的goroutine数量达到上线，那么需要使用空闲goroutine通知事件
-    //if p.reachSizeLimit() {
-    //    p.freeEvents <- struct{}{}
-    //}
+    if p.reachSizeLimit() {
+        p.freeEvents <- struct{}{}
+    }
     return true
 }
 
diff --git a/g/os/grpool/grpool_testb1_test.go b/g/os/grpool/grpool_testb1_test.go
index db82a0500..16826af47 100644
--- a/g/os/grpool/grpool_testb1_test.go
+++ b/g/os/grpool/grpool_testb1_test.go
@@ -23,8 +23,8 @@ func BenchmarkGrpool_1(b *testing.B) {
     }
 }
 
-//func BenchmarkGoroutine_1(b *testing.B) {
-//    for i := 0; i < b.N; i++ {
-//        go increment1()
-//    }
-//}
\ No newline at end of file
+func BenchmarkGoroutine_1(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        go increment1()
+    }
+}
\ No newline at end of file