Thanks, this is great feedback that I'll implement next time. You are right that it is not always obvious especially when talking about both throughput (higher is better) and latency (lower is better) in the same post.
I might be missing the context, but I think the units on the graphs might be off? Currently "Bytes per second". Guessing there should be a multiplier on that?
It was there in the original matplotlib charts, but was dropped in the "chart beautification" process, probably due to the way mpl likes to hide this detail off in a corner somewhere.