"type": "prometheus",
                "uid": "${datasource}"
              },
              "expr": "go_memstats_stack_inuse_bytes{app=\"istiod\"}",
              "format": "time_series",
              "intervalFactor": 2,
              "legendFormat": "Stack in-use",
              "refId": "G",
              "step": 2
            },
            {
              "datasource": {