diff --git a/scripts/tidb.json b/scripts/tidb.json
index 632ced146..b28114366 100644
--- a/scripts/tidb.json
+++ b/scripts/tidb.json
@@ -243,7 +243,7 @@
               "format": "time_series",
               "hide": true,
               "instant": false,
-              "intervalFactor": 3,
+              "intervalFactor": 2,
               "legendFormat": "yesterday",
               "refId": "B",
               "step": 90
@@ -253,7 +253,7 @@
               "format": "time_series",
               "hide": true,
               "instant": false,
-              "intervalFactor": 3,
+              "intervalFactor": 2,
               "legendFormat": "ideal QPS",
               "refId": "C",
               "step": 60
diff --git a/scripts/tidb_summary.json b/scripts/tidb_summary.json
index 4ac32925b..bde871747 100644
--- a/scripts/tidb_summary.json
+++ b/scripts/tidb_summary.json
@@ -118,7 +118,7 @@
           ],
           "spaceLength": 10,
           "stack": false,
-          "steppedLine": true,
+          "steppedLine": false,
           "targets": [
             {
               "expr": "(time() - process_start_time_seconds{job=\"tidb\"})",
@@ -218,7 +218,7 @@
           ],
           "spaceLength": 10,
           "stack": true,
-          "steppedLine": true,
+          "steppedLine": false,
           "targets": [
             {
               "expr": "tidb_server_connections",
@@ -326,7 +326,7 @@
           ],
           "spaceLength": 10,
           "stack": false,
-          "steppedLine": true,
+          "steppedLine": false,
           "targets": [
             {
               "expr": "rate(process_cpu_seconds_total{job=\"tidb\"}[1m])",
@@ -757,7 +757,7 @@
               "format": "time_series",
               "hide": true,
               "instant": false,
-              "intervalFactor": 3,
+              "intervalFactor": 2,
               "legendFormat": "yesterday",
               "refId": "B",
               "step": 90
@@ -767,7 +767,7 @@
               "format": "time_series",
               "hide": true,
               "instant": false,
-              "intervalFactor": 3,
+              "intervalFactor": 2,
               "legendFormat": "ideal QPS",
               "refId": "C",
               "step": 60
@@ -2731,7 +2731,7 @@
           "dashLength": 10,
           "dashes": false,
           "datasource": "${DS_TEST-CLUSTER}",
-          "description": "The duration of a client sending TSO request until received the response.",
+          "description": "The duration of a client starting to wait for the TS until received the TS result.",
           "editable": true,
           "error": false,
           "fill": 1,