[Hawkular-dev] Response time ?

[John Sanda]

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-are-great/ <http://apmblog.dynatrace.com/2012/11/14/why-averages-suck-and-percentiles-are-great/>

> On Feb 19, 2015, at 9:20 AM, Thomas Heute <theute at 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
> 
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