Detecting Outliers

In computer performance, we’re especially concerned about latency outliers: very slow database queries, application requests, disk I/O, etc. The term “outlier” is subjective: there is no rigid mathematical definition. From [Grubbs 69]: An outlying observation, or “outlier,” is one that appears to deviate markedly from other members of the sample in which it occurs. Outliers [...]

Posted on July 1, 2013 at 10:43 am by Brendan Gregg · Permalink · 7 Comments
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