Prometheus works fine as-is on Pi devices. You'll spend most of your memory on ingestion buffering. I did the same tests as you did a while back, it only saves

Prometheus works fine as-is on Pi devices. You'll spend most of your memory on ingestion buffering. I did the same tests as you did a while back, it only saves like 25-50MiB of memory IIRC. The only thing you really need to worry about on a Pi is that the default kernels are still 32-bit, and are set to 2GiB kernel boundary. So you'll be limited to how much TSDB storage can be mmap'd unless you switch to a 64-bit kernel. You may want to consider agent mode on your IoT device, and stream the data to an external server/service. https://prometheus.io/docs/prometheus/latest/feature_flags/#prometheus-agent https://prometheus.io/docs/prometheus/latest/feature_flags/#...