Think FPS charts in GPU reviews. If the distribution of the latency is uneven, eg. you get fast response times, but only in a small number of requests, the aver

Think FPS charts in GPU reviews. If the distribution of the latency is uneven, eg. you get fast response times, but only in a small number of requests, the average won't tell you as much information as what the latency is 50%, 90% or 99% of the time.