Пример #1
0
func ExampleHistogram() {
	temps := prometheus.NewHistogram(prometheus.HistogramOpts{
		Name:    "pond_temperature_celsius",
		Help:    "The temperature of the frog pond.", // Sorry, we can't measure how badly it smells.
		Buckets: prometheus.LinearBuckets(20, 5, 5),  // 5 buckets, each 5 centigrade wide.
	})

	// Simulate some observations.
	for i := 0; i < 1000; i++ {
		temps.Observe(30 + math.Floor(120*math.Sin(float64(i)*0.1))/10)
	}

	// Just for demonstration, let's check the state of the histogram by
	// (ab)using its Write method (which is usually only used by Prometheus
	// internally).
	metric := &dto.Metric{}
	temps.Write(metric)
	fmt.Println(proto.MarshalTextString(metric))

	// Output:
	// histogram: <
	//   sample_count: 1000
	//   sample_sum: 29969.50000000001
	//   bucket: <
	//     cumulative_count: 192
	//     upper_bound: 20
	//   >
	//   bucket: <
	//     cumulative_count: 366
	//     upper_bound: 25
	//   >
	//   bucket: <
	//     cumulative_count: 501
	//     upper_bound: 30
	//   >
	//   bucket: <
	//     cumulative_count: 638
	//     upper_bound: 35
	//   >
	//   bucket: <
	//     cumulative_count: 816
	//     upper_bound: 40
	//   >
	// >
}
Пример #2
0
			Help:      "Total number of events sent by this member.",
		})

	pendingEventsGauge = prometheus.NewGauge(
		prometheus.GaugeOpts{
			Namespace: "etcd",
			Subsystem: "storage",
			Name:      "pending_events_total",
			Help:      "Total number of pending events to be sent.",
		})

	indexCompactionPauseDurations = prometheus.NewHistogram(
		prometheus.HistogramOpts{
			Namespace: "etcd",
			Subsystem: "storage",
			Name:      "index_compaction_pause_duration_milliseconds",
			Help:      "Bucketed histogram of index compaction puase duration.",
			// 0.5ms -> 1second
			Buckets: prometheus.ExponentialBuckets(0.5, 2, 12),
		})

	dbCompactionPauseDurations = prometheus.NewHistogram(
		prometheus.HistogramOpts{
			Namespace: "etcd",
			Subsystem: "storage",
			Name:      "db_compaction_pause_duration_milliseconds",
			Help:      "Bucketed histogram of db compaction puase duration.",
			// 1ms -> 4second
			Buckets: prometheus.ExponentialBuckets(1, 2, 13),
		})