diff --git a/deployments/monitor/grafana/milvus-dashboard.json b/deployments/monitor/grafana/milvus-dashboard.json
index 1bf43763cb..2e85d0ba8c 100644
--- a/deployments/monitor/grafana/milvus-dashboard.json
+++ b/deployments/monitor/grafana/milvus-dashboard.json
@@ -3671,7 +3671,7 @@
       "steppedLine": false,
       "targets": [
         {
-          "expr": "sum(rate(milvus_dataNode_watch_dm_channels_total{app_kubernetes_io_instance=~\"$instance\", app_kubernetes_io_name=\"$app_name\", namespace=\"$namespace\", type=\"total\"}[5m])) by (pod)",
+          "expr": "sum(increase(milvus_dataNode_watch_dm_channels_total{app_kubernetes_io_instance=~\"$instance\", app_kubernetes_io_name=\"$app_name\", namespace=\"$namespace\", type=\"total\"}[2m])/2)",
           "interval": "",
           "legendFormat": "total",
           "queryType": "randomWalk",