if 0 -> 1000 users is 100MB, how can you explain 1000 -> 2000 with 150MB
Fixed cost: 50 MB
Variable Cost: 50KB/user
50 + 1000 * (0.05) => 100 MB
50 + 2000 * (0.05) => 150 MB
Pretty straightforward?
Well if that's the math that works for you, but I won't assume anything here. If I would have written it in C or Rust lang I would have given quoted a more deterministic memory usage. Bottom line, benchmarks just quoted numbers. Should have put up a Notice disclaimer in comment as well.