sum(increase(vm_new_timeseries_created_total[24h])) by(instance)
>
(sum(vm_cache_entries{type="storage/hour_metric_ids"}) by(instance) * 3)

900 seconds

severity=warning

dashboard:

http://localhost:3000/d/wNf0q_kZk?viewPanel=66&var-instance={{ $labels.instance }}

description:

The number of created new time series over last 24h is 3x times higher than current number of active series on "{{ $labels.instance }}". This effect is known as Churn Rate. High Churn Rate tightly connected with database performance and may result in unexpected OOM's or slow queries.

summary:

Too high number of new series on "{{ $labels.instance }}" created over last 24h

216423836913459264