This also would be inaccurate. The method we use generates an accurate figure for graphs using 5 min samples, beyond that it’s not possible.
If one port does 999mb at the start of a 30 min period and another does 999mb 25 mins later, we’d generate an aggregate max of 1998mb n any graph with these two ports and once they are averaged to 30min samples, which is obviously useless :) There’s no actual solution to this, the data simply no longer exists at this point. We should /probably/ hide the aggregate max on graphs > 24hr Adam. Sent from my iPhone > On 6 Oct 2022, at 03:57, David Milton via observium > <[email protected]> wrote: > > > Thanks for the explanation. To my mind however, the aggregate max would be to > take the sum of all values of the same time and select the maximum sum. > Using an average for a maximum when all other values are discrete produces > results that aren’t useful. > I know it’s not Observium but that’s a major problem with rrdtool in my > opinion > >> On Wed, 5 Oct 2022, at 13:08, Adam Armstrong via observium wrote: >> Hi David, >> >> This is due to how rrdtool works. It doesn't make a lot of sense to >> aggregate the max of max together, so the max for the aggregate is the >> max of the aggregated averages, rather than the max of the max values, >> which wouldn't make a lot of senses since it'd be merging peaks which >> may not have actually occurred at the same time. >> >> adam. >> >> David Milton via observium wrote on 05/10/2022 17:55: >>> Hello, >>> >>> We have been seeing some results in our stacked graphs that do not appear >>> to make sense. >>> Initially we thought this was because the maximum values for the two values >>> occurred at different points in time. >>> That cannot be the whole issue because even if you take the sum of every >>> pair of numbers the maximum aggregate must at least equal the maximum value >>> of one of the two series. >>> >>> This graph shows the problem: >>> >>> How can we have a maximum value of 97.4M but an aggregate maximum of 55.7M? >>> It seems that maximum aggregate should also at least be 97.4M. >>> >>> What’s happening here? >>> >>> Thanks, >>> Dave. >>> >>> >>> >>> _______________________________________________ >>> observium mailing list -- [email protected] >>> To unsubscribe send an email to [email protected] >> >> -- >> Sent from Postbox >> <https://www.postbox-inc.com/?utm_source=email&utm_medium=siglink&utm_campaign=reach> >> _______________________________________________ >> observium mailing list -- [email protected] >> To unsubscribe send an email to [email protected] > > -- > David Milton > [email protected], > For better email, sign up here: http://www.fastmail.fm/?STKI=7947829 > _______________________________________________ > observium mailing list -- [email protected] > To unsubscribe send an email to [email protected] _______________________________________________ observium mailing list -- [email protected] To unsubscribe send an email to [email protected]
