diff --git a/src/scheduler_fair.go b/src/scheduler_fair.go
index 43db65c..66abd46 100644
--- a/src/scheduler_fair.go
+++ b/src/scheduler_fair.go
@@ -531,6 +531,16 @@ func (scheduler *SchedulerFair) AcquireResource(job Job, task Task, nodes []Node
 		lock.Unlock()
 	}
 
+	for cur := start; ; {
+		log.Info("trylock ", cur.ID)
+		cur.Lock.Lock()
+		cur.Lock.Unlock()
+		cur = cur.Next
+		if cur.ID == start.ID {
+			break
+		}
+	}
+
 	go func(res NodeStatus) {
 		if len(res.Status) == 0 {
 			return
@@ -741,7 +751,7 @@ func (scheduler *SchedulerFair) UpdateNextQueue() {
 	start := pool.pools[0].Next
 	for cur := start; ; {
 		log.Info(cur.ID)
-		//cur.Lock.Lock()
+		cur.Lock.Lock()
 		for _, node := range cur.Nodes {
 			CPU += float64(node.NumCPU)
 			Memory += float64(node.MemTotal)
@@ -750,7 +760,7 @@ func (scheduler *SchedulerFair) UpdateNextQueue() {
 				MemoryGPU += float64(card.MemoryTotal)
 			}
 		}
-		//cur.Lock.Unlock()
+		cur.Lock.Unlock()
 		cur = cur.Next
 		if cur == start {
 			break