{
          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },
          "expr": "(histogram_quantile(0.50, sum(irate(istio_request_duration_milliseconds_bucket{reporter=~\"$qrep\",destination_service=~\"$service\"}[1m])) by (le)) / 1000) or histogram_quantile(0.50, sum(irate(istio_request_duration_seconds_bucket{reporter=~\"$qrep\",destination_service=~\"$service\"}[1m])) by (le))",

            "type": "prometheus",
            "uid": "${datasource}"
          },

          "targets": [
            {
              "datasource": {
                "type": "prometheus",
                "uid": "${datasource}"
              },
              "expr": "histogram_quantile(0.5, sum(rate(pilot_proxy_convergence_time_bucket[1m])) by (le))",
              "format": "time_series",
              "intervalFactor": 1,
              "legendFormat": "p50 ",
              "refId": "A"

            "type": "prometheus",
            "uid": "${datasource}"
          },