[c-nsp] 95th percentile billing software

[Chris Adams]

Once upon a time, Chris Cappuccio <chris at nmedia.net> said:
> CACTI http://www.cacti.net/ has a 95th percentile mode for its graphs, but is considered less accurate as it averages samples together (because it uses RRD) thus lowering the overall 95th percentile rating for customers with less constant usage.  The monthly graph uses a 30 minute average, and the yearly graph uses a 1 day average.  Many customers will have a significantly lower 1 day average, due to low night time usage, for instance...

That's not a function of RRD, that's a function of how RRD is
configured.  For example, Cricket uses default RRDs that only keep 5
minute snapshots for a couple of days, but it is easy to configure it to
keep them longer (which of course makes them larger).  This can be done
on a per-targetType basis (so you could build a 95th percentile target
type and set it to keep 5 minute data for 30 or 60 days).

-- 
Chris Adams <cmadams at hiwaay.net>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.