write-histogram-grafana-panel.json

{
  "cards": {
    "cardPadding": null,
    "cardRound": null
  },
  "color": {
    "cardColor": "#bf1b00",
    "colorScale": "sqrt",
    "colorScheme": "interpolateRdYlGn",
    "exponent": 0.25,
    "mode": "opacity"
  },
  "dataFormat": "tsbuckets",
  "datasource": "$prometheus",
  "gridPos": {
    "h": 13,
    "w": 24,
    "x": 0,
    "y": 0
  },
  "heatmap": {},
  "highlightCards": true,
  "id": 2,
  "legend": {
    "show": false
  },
  "links": [],
  "targets": [
    {
      "expr": "sum(rate(ebpf_exporter_bio_latency_seconds_bucket{node_type=~\"$type\", instance=~\"$instance\", device=~\"$device\", operation=\"write\"}[$rate])) without (instance, node_type, device)",
      "format": "heatmap",
      "interval": "$step",
      "intervalFactor": 1,
      "legendFormat": "{{ le }}",
      "refId": "A"
    }
  ],
  "title": "Write latency histogram",
  "tooltip": {
    "show": true,
    "showHistogram": true
  },
  "type": "heatmap",
  "xAxis": {
    "show": true
  },
  "xBucketNumber": null,
  "xBucketSize": null,
  "yAxis": {
    "decimals": 1,
    "format": "s",
    "logBase": 1,
    "max": null,
    "min": null,
    "show": true,
    "splitFactor": null
  },
  "yBucketBound": "auto",
  "yBucketNumber": null,
  "yBucketSize": null
}