"uid": "${datasource}"
          },
          "expr": "sum(irate(istio_response_bytes_sum{source_workload_namespace!=\"istio-system\", reporter=\"source\"}[1m])) + sum(irate(istio_request_bytes_sum{source_workload_namespace!=\"istio-system\", reporter=\"source\"}[1m]))",
          "format": "time_series",
          "intervalFactor": 1,
          "legendFormat": "istio-proxy",
          "refId": "B"
        }