I wonder how it compares with InfluxData's telegraf. It seem to gather a subset of the metrics collected by telegraf, but maybe it requires far less resources or is meant for scenarios where very frequent measurements are needed.
I've used telegraf to sample at 100Hz for ML workloads. I think one difference is that telegraf pushes each measurement to the DB, while Rezolus summarizes this high granularity data to reduce the amount that needs to be stored.