<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">I like percentiles. Here is a good article that explains why percentiles are effective and why they should be used for baselining.<div class=""><br class=""></div><div class=""><a href="http://apmblog.dynatrace.com/2012/11/14/why-averages-suck-and-percentiles-are-great/" class="">http://apmblog.dynatrace.com/2012/11/14/why-averages-suck-and-percentiles-are-great/</a></div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Feb 19, 2015, at 9:20 AM, Thomas Heute <<a href="mailto:theute@redhat.com" class="">theute@redhat.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><br class="">What is a useful representation of a response time over a period of time ?<br class=""><br class=""> - Average of all the samples ? *2.22s*<br class=""> - 90/95/99 percentile ? 99% of your requests took less than *2.45s*<br class=""> - Percentage of valid samples ? *94%* of your requests took less <br class="">than your 3s acceptable time.<br class=""> - Apdex ? <a href="http://en.wikipedia.org/wiki/Apdex" class="">http://en.wikipedia.org/wiki/Apdex</a><br class=""><br class="">Anything else ? (This is for a quick overview of the health of a system).<br class=""><br class="">Thomas<br class=""><br class="">_______________________________________________<br class="">hawkular-dev mailing list<br class=""><a href="mailto:hawkular-dev@lists.jboss.org" class="">hawkular-dev@lists.jboss.org</a><br class="">https://lists.jboss.org/mailman/listinfo/hawkular-dev<br class=""></div></blockquote></div><br class=""></div></body></html>