diff --git a/src/resource_pool.go b/src/resource_pool.go
index df2bb66..54708e9 100644
--- a/src/resource_pool.go
+++ b/src/resource_pool.go
@@ -14,7 +14,7 @@ import (
 
 type ResourcePool struct {
 	poolsCount int
-	pools      []PoolSeg
+	//pools      []PoolSeg
 	poolsMu    sync.Mutex
 
 	history []PoolStatus
@@ -165,7 +165,7 @@ func (pool *ResourcePool) saveStatusHistory() {
 			nodesCount += len(cur.Nodes)
 			cur.Lock.Unlock()
 			cur = cur.Next
-			if cur == start {
+			if cur.ID == start.ID {
 				break
 			}
 		}
@@ -249,6 +249,7 @@ func (pool *ResourcePool) update(node NodeStatus) {
 
 /* spilt seg */
 func (pool *ResourcePool) scaleSeg(seg *PoolSeg) {
+	log.Info("Scaling seg ", seg.ID)
 	go func() {
 		pool.poolsMu.Lock()
 		defer pool.poolsMu.Unlock()
diff --git a/src/scheduler_fair.go b/src/scheduler_fair.go
index 65d1006..bc2d16a 100644
--- a/src/scheduler_fair.go
+++ b/src/scheduler_fair.go
@@ -353,7 +353,7 @@ func (scheduler *SchedulerFair) AcquireResource(job Job, task Task, nodes []Node
 
 			for cur := start; ; {
 				if _, ok := locks[cur.ID]; !ok {
-					log.Info("lock", cur.ID)
+					log.Info("lock ", cur.ID)
 					cur.Lock.Lock()
 					locks[cur.ID] = cur.Lock
 				}
@@ -403,7 +403,7 @@ func (scheduler *SchedulerFair) AcquireResource(job Job, task Task, nodes []Node
 		allocationType = 2
 		for cur := start; ; {
 			if _, ok := locks[cur.ID]; !ok {
-				log.Info("lock", cur.ID)
+				log.Info("lock ", cur.ID)
 				cur.Lock.Lock()
 				locks[cur.ID] = cur.Lock
 			}
@@ -445,7 +445,7 @@ func (scheduler *SchedulerFair) AcquireResource(job Job, task Task, nodes []Node
 			allocationType = 3
 			for cur := start; ; {
 				if _, ok := locks[cur.ID]; !ok {
-					log.Info("lock", cur.ID)
+					log.Info("lock ", cur.ID)
 					cur.Lock.Lock()
 					locks[cur.ID] = cur.Lock
 				}