Query path benchmarks

[thorfour]

Right now we have a small set of benchmarks that really only benchmark concurrent writers. It would be good to get some benchmarks around the query path, as well as large database benchmarks etc.

[brancz]

There are some query benchmarks in the parca project, those are what I’ve been using for query benchmarking.

[asubiotto]

Planning on taking this on. I think adding some benchmarks to FrostDB that represent the cloud OKRs would be pretty useful to get some less noisy benchmarks.