[codeslinger]

You may have a problem in your math. A mean of 4.3us with a stdev of 10.9us should mean that your 99% should be over 26us, unless it's super smooth with a few huge outliers.

Also, are you sure you didn't mean ms and not us? Seems more likely for an HTTP service.

[knutin]

Thanks for your feedback. Always good to have an extra set of eyes!

To check if the numbers make sense, I dumped the raw data used to compute these stats and compared elli_stats with the same functions in R and they match up.