'Stack ({{pod}})',
          sum(labels('go_memstats_stack_inuse_bytes', appLabels), by=['pod'])
        ),
        self.query(
          'Heap (In Use) ({{pod}})',
          sum(labels('go_memstats_heap_inuse_bytes', appLabels), by=['pod'])
        ),
        self.query(
          'Heap (Allocated) ({{pod}})',
          sum(labels('go_memstats_heap_alloc_bytes', appLabels), by=['pod'])
        ),
      ],

            {
               "datasource": {
                  "type": "prometheus",
                  "uid": "$datasource"
               },
               "expr": "sum by (cluster, namespace, job) (\n  go_memstats_heap_inuse_bytes{cluster=~\"$cluster\", namespace=~\"$namespace\", job=~\"$job\"}\n)\n",
               "intervalFactor": 2,
               "legendFormat": "go heap - {{cluster}} - {{namespace}}\n"
            },
            {

            },
            {
               "datasource": {
                  "type": "prometheus",
                  "uid": "$datasource"
               },
               "expr": "sum by (pod) (go_memstats_heap_inuse_bytes{app=\"istiod\"})",
               "legendFormat": "Heap (In Use) ({{pod}})"
            },
            {
               "datasource": {
                  "type": "prometheus",

          "step": 2
        },
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },
          "expr": "go_memstats_heap_inuse_bytes{app=\"istiod\"}",
          "format": "time_series",
          "hide": false,
          "intervalFactor": 2,
          "legendFormat": "Heap in-use",
          "refId": "E",
          "step": 2