While 99% latency provides a good measure of QoS, it does not tell me the scale at which it is operating. I may have a service that renders some static content,

While 99% latency provides a good measure of QoS, it does not tell me the scale at which it is operating. I may have a service that renders some static content, say a hundred times a day. My 99th percentile latency is < 50ms. Now my observed throughput is literally non-existent. If 99% latency was < 100ms at 10k requests/s throughput, now we are talking!