Perhaps indexes wasn't the optimum word. There's some references to Prometheus' memory usage if you go looking, typically if you're searching around 'why does prometheus use so much memory'.
I'm struggling to find the comparative metrics on capacity that you're seeking, though I do recall seeing them previously, and having run up multiple prometheus instances (in vanilla and agent-mode) and fed those into mimir, I'm aware that prom has some non-negotiable limits on time series.
https://grafana.com/docs/mimir/latest/get-started/about-graf...
Perhaps indexes wasn't the optimum word. There's some references to Prometheus' memory usage if you go looking, typically if you're searching around 'why does prometheus use so much memory'.
I'm struggling to find the comparative metrics on capacity that you're seeking, though I do recall seeing them previously, and having run up multiple prometheus instances (in vanilla and agent-mode) and fed those into mimir, I'm aware that prom has some non-negotiable limits on time series.