I remember seeing a talk years ago about percentiles and how they lie: https://www.youtube.com/watch?v=lJ8ydIuPFeU https://www.youtube.com/watch?v=lJ8ydIuPFeU

I remember seeing a talk years ago about percentiles and how they lie: https://www.youtube.com/watch?v=lJ8ydIuPFeU https://www.youtube.com/watch?v=lJ8ydIuPFeU You should be exposing the maximum metric from your app, computing a percentile from an aggregated histogram is lossy. [edit: Found the link, "How NOT to Measure Latency" by Gil Tene]