Features	Gnocchi	Prometheus	InfluxDB	OpenTSDB	Graphite
Metric polling	No	Yes	No	No	No
Resource history	Yes	No	No	No	No
Multi-tenant	Yes	No	No	No	No
Query interface	REST API	REST API	HTTP	TCP	None
High-available	Yes	No	With Relay	Yes	No
Scalable	Yes	No	Commercial only	Yes	No
Alerting	No (roadmap)	Yes	With Kapacitor	No	No
Grafana support	Yes	Yes	Yes	Yes	Yes
collectd support	Yes	Yes	Yes	Yes	Yes