On Feb 19, 2015, at 9:20 AM, Thomas Heute <theute(a)redhat.com&gt; wrote: What is a useful representation of a response time over a period of time ? - Average of all the samples ? *2.22s* - 90/95/99 percentile ? 99% of your requests took less than *2.45s* - Percentage of valid samples ? *94%* of your requests took less than your 3s acceptable time. - Apdex ? http://en.wikipedia.org/wiki/Apdex Anything else ? (This is for a quick overview of the health of a system). Thomas _______________________________________________ hawkular-dev mailing list hawkular-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/hawkular-dev

Percentiles and standard deviation are needed in general. Now on a *default* dashboard (this is what you're asking about, correct?) I personally like to see avg AND 90 percentile.

Le 19/02/2015 15:52, John Sanda a écrit : > I like percentiles. Here is a good article that explains why percentiles > are effective and why they should be used for baselining. > > http://apmblog.dynatrace.com/2012/11/14/why-averages-suck-and-percentiles... > >> On Feb 19, 2015, at 9:20 AM, Thomas Heute <theute(a)redhat.com >> <mailto:theute@redhat.com>> wrote: >> >> >> What is a useful representation of a response time over a period of time ? >> >> - Average of all the samples ? *2.22s* >> - 90/95/99 percentile ? 99% of your requests took less than *2.45s* >> - Percentage of valid samples ? *94%* of your requests took less >> than your 3s acceptable time. >> - Apdex ? http://en.wikipedia.org/wiki/Apdex >> >> Anything else ? (This is for a quick overview of the health of a system). >> >> Thomas >> >> _______________________________________________ >> hawkular-dev mailing list >> hawkular-dev(a)lists.jboss.org <mailto:hawkular-dev@lists.jboss.org> >> https://lists.jboss.org/mailman/listinfo/hawkular-dev > > > > _______________________________________________ > hawkular-dev mailing list > hawkular-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/hawkular-dev > _______________________________________________ hawkular-dev mailing list hawkular-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/hawkular-dev