diff --git a/modules/cloudbrain/cloudbrain.go b/modules/cloudbrain/cloudbrain.go
index 6c0681aba..5d6948acb 100755
--- a/modules/cloudbrain/cloudbrain.go
+++ b/modules/cloudbrain/cloudbrain.go
@@ -17,7 +17,7 @@ import (
 )
 
 const (
-	Command = `pip3 install jupyterlab==2.2.5 -i https://pypi.tuna.tsinghua.edu.cn/simple;service ssh stop;jupyter lab --no-browser --ip=0.0.0.0 --allow-root --notebook-dir="/code" --port=80 --LabApp.token="" --LabApp.allow_origin="self https://cloudbrain.pcl.ac.cn"`
+	//Command = `pip3 install jupyterlab==2.2.5 -i https://pypi.tuna.tsinghua.edu.cn/simple;service ssh stop;jupyter lab --no-browser --ip=0.0.0.0 --allow-root --notebook-dir="/code" --port=80 --LabApp.token="" --LabApp.allow_origin="self https://cloudbrain.pcl.ac.cn"`
 	//CommandBenchmark      = `echo "start benchmark";python /code/test.py;echo "end benchmark"`
 	CommandBenchmark      = `echo "start benchmark";cd /benchmark && bash run_bk.sh;echo "end benchmark"`
 	CodeMountPath         = "/code"
@@ -71,6 +71,11 @@ type GenerateCloudBrainTaskReq struct {
 	ResourceSpecId       int
 }
 
+func GetCloudbrainDebugCommand() string {
+	var command = `pip3 install jupyterlab==3 -i https://pypi.tuna.tsinghua.edu.cn/simple;service ssh stop;/usr/local/bin/python /usr/local/bin/jupyter-lab --ServerApp.shutdown_no_activity_timeout=` + setting.CullIdleTimeout + ` --TerminalManager.cull_inactive_timeout=` + setting.CullIdleTimeout + ` --TerminalManager.cull_interval=` + setting.CullInterval + ` --MappingKernelManager.cull_idle_timeout=` + setting.CullIdleTimeout + ` --MappingKernelManager.cull_interval=` + setting.CullInterval + ` --MappingKernelManager.cull_connected=True --MappingKernelManager.cull_busy=True --no-browser --ip=0.0.0.0 --allow-root --notebook-dir="/code" --port=80 --ServerApp.token="" --ServerApp.allow_origin="self https://cloudbrain.pcl.ac.cn" `
+	return command
+}
+
 func isAdminOrOwnerOrJobCreater(ctx *context.Context, job *models.Cloudbrain, err error) bool {
 	if !ctx.IsSigned {
 		return false
@@ -507,7 +512,7 @@ func RestartTask(ctx *context.Context, task *models.Cloudbrain, newID *string) e
 				GPUNumber:             resourceSpec.GpuNum,
 				MemoryMB:              resourceSpec.MemMiB,
 				ShmMB:                 resourceSpec.ShareMemMiB,
-				Command:               Command,
+				Command:               GetCloudbrainDebugCommand(),//Command,
 				NeedIBDevice:          false,
 				IsMainRole:            false,
 				UseNNI:                false,
diff --git a/modules/setting/setting.go b/modules/setting/setting.go
index d206ed9a3..e9aafa3d3 100755
--- a/modules/setting/setting.go
+++ b/modules/setting/setting.go
@@ -467,6 +467,8 @@ var (
 	TrainGpuTypes      string
 	TrainResourceSpecs string
 	MaxDatasetNum      int
+	CullIdleTimeout    string
+	CullInterval       string
 
 	//benchmark config
 	IsBenchmarkEnabled     bool
@@ -1315,6 +1317,8 @@ func NewContext() {
 	SpecialPools = sec.Key("SPECIAL_POOL").MustString("")
 	
 	MaxDatasetNum = sec.Key("MAX_DATASET_NUM").MustInt(5)
+	CullIdleTimeout = sec.Key("CULL_IDLE_TIMEOUT").MustString("900")
+	CullInterval = sec.Key("CULL_INTERVAL").MustString("60")
 
 	sec = Cfg.Section("benchmark")
 	IsBenchmarkEnabled = sec.Key("ENABLED").MustBool(false)
diff --git a/routers/repo/cloudbrain.go b/routers/repo/cloudbrain.go
index cf864001a..4eb810d21 100755
--- a/routers/repo/cloudbrain.go
+++ b/routers/repo/cloudbrain.go
@@ -136,7 +136,7 @@ func cloudBrainNewDataPrepare(ctx *context.Context) error {
 	}
 
 	ctx.Data["attachments"] = attachs
-	ctx.Data["command"] = cloudbrain.Command
+	ctx.Data["command"] = cloudbrain.GetCloudbrainDebugCommand()
 	ctx.Data["code_path"] = cloudbrain.CodeMountPath
 	ctx.Data["dataset_path"] = cloudbrain.DataSetMountPath
 	ctx.Data["model_path"] = cloudbrain.ModelMountPath
@@ -315,7 +315,7 @@ func CloudBrainCreate(ctx *context.Context, form auth.CreateCloudBrainForm) {
 		return
 	}
 
-	command := cloudbrain.Command
+	command := cloudbrain.GetCloudbrainDebugCommand()
 	if jobType == string(models.JobTypeTrain) {
 		tpl = tplCloudBrainTrainJobNew
 		commandTrain, err := getTrainJobCommand(form)
@@ -2186,7 +2186,7 @@ func ModelBenchmarkCreate(ctx *context.Context, form auth.CreateCloudBrainForm)
 	repo := ctx.Repo.Repository
 
 	tpl := tplCloudBrainBenchmarkNew
-	command := cloudbrain.Command
+	command := cloudbrain.GetCloudbrainDebugCommand()
 
 	tasks, err := models.GetCloudbrainsByDisplayJobName(repo.ID, jobType, displayJobName)
 	if err == nil {