Some questions about UI, about Instant vector and Range vector

[evanzhang87]

Hello,I'm trying to use pyroscope to analyze my application, but the UI make me confused.

As you know, Total amount of RAM bar means value of timestamp, it's a Range vector, so what does Table and Flamegraph mean？

Does it means sum_over_time() or avg_over_time() ? (or max/min_over_time()? Although I don't think so) .Or just a Instant vector of some timestamp?

[cyriltovena]

This is a great question and we're tackling this issue starting here #2758

Right now this is a sum_over_time, so it's possible each point have multiple collected samples for the same applications. As you noticed in the case of a in_use memory this is confusing, we're thinking about moving this to an avg_over_time or max_over_time.

Right now it's a range vector that is selected, we selected multiple point per step, not a single one like Prometheus does with the lookback period. This is also something that we are thinking about.