Our internal benchmarks (which we are publishing soon), show a sustainable insert performance of 100K+ rows/second (where each row contains 10 metrics -- some w

Our internal benchmarks (which we are publishing soon), show a sustainable insert performance of 100K+ rows/second (where each row contains 10 metrics -- some would call this 1M metrics/second), even at 10 Billion rows. All on a single commodity instance (with only 16GB RAM). (We will publish these soon, along with scripts to reproduce them.) But I agree that "large" often means different things to different people.