Reliable Insights A blog on monitoring, scale and operational Sanity I previously looked at ingestion memory for 1.x, how about 2.x? Prometheus 2.x has a very different ingestion system to 1.x, with many performance improvements. This time I'm also going to take into account the cost of cardinality in the head block. To start with I took a profile of a Prometheus 2.9.2 ingesting from a single targ