By stf83
via techblog.molindo.at
Submitted: Nov 06 2009 / 10:00
For performance evaluations, using minimum, maximum or average response times is a bad idea: “The ‘average’ is the evil of performance optimization and often as helpful as ‘average patient temperature in the hospital’”. Instead, performance tuners should be looking at the percentile: “A percentile is the value of a variable below which a certain percent of observations fall”. In this blog post, I present an efficient implementation suitable for tracking percentiles for live data - perfectly suited for response times of web applications and other servers. (Java code included)
Add your comment
