[skip e2e]Add go heap idle panel for grafana (#13584)

Signed-off-by: NWeida Zhu <weida.zhu@zilliz.com>

deployments/monitor/grafana/milvus-dashboard.json

@@ -16,7 +16,7 @@
   "gnetId": null,
   "graphTooltip": 0,
   "id": 27,
-  "iteration": 1639553003214,
+  "iteration": 1639710092805,
   "links": [],
   "panels": [
     {
@@ -2293,7 +2293,7 @@
       "dashLength": 10,
       "dashes": false,
       "datasource": "$datasource",
-      "description": "Total cpu usage of all milvus components.",
+      "description": "Total cpu usage of all milvus components",
       "fieldConfig": {
         "defaults": {},
         "overrides": []
@@ -2681,7 +2681,7 @@
       "dashLength": 10,
       "dashes": false,
       "datasource": "prometheus",
-      "description": "Process memory of milvus pods.",
+      "description": "Process memory of milvus pod",
       "fieldConfig": {
         "defaults": {},
         "overrides": []
@@ -3818,7 +3818,7 @@
       "timeFrom": null,
       "timeRegions": [],
       "timeShift": null,
-      "title": "Memory bytes allocated rate",
+      "title": "Memory Allocated Rate",
       "tooltip": {
         "shared": true,
         "sort": 0,
@@ -3953,6 +3953,104 @@
         "align": false,
         "alignLevel": null
       }
+    },
+    {
+      "aliasColors": {},
+      "bars": false,
+      "dashLength": 10,
+      "dashes": false,
+      "datasource": "$datasource",
+      "description": "Number of heap bytes waiting to be used",
+      "fieldConfig": {
+        "defaults": {},
+        "overrides": []
+      },
+      "fill": 1,
+      "fillGradient": 0,
+      "gridPos": {
+        "h": 6,
+        "w": 8,
+        "x": 16,
+        "y": 81
+      },
+      "hiddenSeries": false,
+      "id": 123219,
+      "legend": {
+        "avg": false,
+        "current": false,
+        "max": false,
+        "min": false,
+        "show": true,
+        "total": false,
+        "values": false
+      },
+      "lines": true,
+      "linewidth": 1,
+      "nullPointMode": "null",
+      "options": {
+        "alertThreshold": true
+      },
+      "percentage": false,
+      "pluginVersion": "7.5.4",
+      "pointradius": 2,
+      "points": false,
+      "renderer": "flot",
+      "seriesOverrides": [],
+      "spaceLength": 10,
+      "stack": false,
+      "steppedLine": false,
+      "targets": [
+        {
+          "exemplar": true,
+          "expr": "go_memstats_heap_idle_bytes{app_kubernetes_io_name=\"$app_name\", app_kubernetes_io_instance=~\"$instance\", namespace=\"$namespace\"}",
+          "interval": "",
+          "intervalFactor": 2,
+          "legendFormat": "{{pod}}",
+          "queryType": "randomWalk",
+          "refId": "A"
+        }
+      ],
+      "thresholds": [],
+      "timeFrom": null,
+      "timeRegions": [],
+      "timeShift": null,
+      "title": "Go Heap idle",
+      "tooltip": {
+        "shared": true,
+        "sort": 0,
+        "value_type": "individual"
+      },
+      "type": "graph",
+      "xaxis": {
+        "buckets": null,
+        "mode": "time",
+        "name": null,
+        "show": true,
+        "values": []
+      },
+      "yaxes": [
+        {
+          "decimals": null,
+          "format": "short",
+          "label": null,
+          "logBase": 1,
+          "max": null,
+          "min": "0",
+          "show": true
+        },
+        {
+          "format": "short",
+          "label": null,
+          "logBase": 1,
+          "max": null,
+          "min": null,
+          "show": true
+        }
+      ],
+      "yaxis": {
+        "align": false,
+        "alignLevel": null
+      }
     }
   ],
   "refresh": false,
@@ -4040,6 +4138,7 @@
       {
         "allValue": null,
         "current": {
+          "isNone": true,
           "selected": false,
           "text": "None",
           "value": ""
@@ -4071,13 +4170,10 @@
       {
         "allValue": null,
         "current": {
+          "isNone": true,
           "selected": false,
-          "text": [
-            "None"
-          ],
-          "value": [
-            ""
-          ]
+          "text": "None",
+          "value": ""
         },
         "datasource": "$datasource",
         "definition": "label_values(go_info{namespace=\"$namespace\", app_kubernetes_io_instance=~\"$instance\",app_kubernetes_io_name=\"$app_name\"} , pod)",
@@ -4106,13 +4202,10 @@
       {
         "allValue": null,
         "current": {
+          "isNone": true,
           "selected": false,
-          "text": [
-            "None"
-          ],
-          "value": [
-            ""
-          ]
+          "text": "None",
+          "value": ""
         },
         "datasource": "${datasource}",
         "definition": "label_values(go_info{namespace=\"$namespace\", app_kubernetes_io_instance=~\"$instance\",app_kubernetes_io_name=\"$app_name\"} , app_kubernetes_io_component)",
@@ -4141,7 +4234,7 @@
     ]
   },
   "time": {
-    "from": "now-1h",
+    "from": "now-15m",
     "to": "now"
   },
   "timepicker": {
@@ -4174,5 +4267,5 @@
   "timezone": "browser",
   "title": "Milvus2.0",
   "uid": "uLf5cJ3Gz",
-  "version": 208
+  "version": 210
 }
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