Fred Moyer, Circonus
Median, average, 90th, 99th percentile. We've all seen these metrics on our monitoring systems, both open source and from commercial vendors, but often they are used incorrectly when constructing Service Level Objectives. This session will show three different approaches to correctly calculating latency SLOs, and how histograms can be used to calculate mathematically correct quantiles and set SLOs based on those.
Fred Moyer is a Developer Evangelist for Circonus, where he likes to apply math to ridiculously large sets of data. Fred is a recovering Perl and C programmer, and these days likes to hack in Go and is learning Lua. He is a 2013 White Camel award winner, Apache Software Foundation member, and has worked in software engineering and reliability roles for the last 18 years.
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