When you use Cortex or InfluxDB and you collect performance metrics with a higher resolution of 5 minutes (300s), it is not possible to query metrics in a higher resolution. In the Grafana data source, I've configured a Min time interval of 15s.
In Grafana the request is made with a step size of 15000ms but in the response shows a step size of 300000ms and the min time interval is ignored.
To rule this out, I've configured on the OpenNMS side
even it has nothing to do with Newts, but it doesn't solve the problem. I've tried Cortex and the Influx 2.0 data source with the same effects.