Hi Peter, Yesterday Peter Stamfest wrote:
> Dear List! > > I have just pushed a new version of my rrd modify work to > https://github.com/stamfest/rrdtool-1.x in branch rrdmodify-master. > > This is the first "public" version to have support for a reduction of > the basic RRD step size. Note that there are restrictions about the > possible new step size: The current step size must be a whole-number > multiple of the new step size. The modification works by recording the > new step size and adjusting the pdp count of all existing RRAs. This > also means, that reducing the step size will most likely only make sense > if you add a new RRA with a pdp count of 1 so you can take advantage of > the then higher resolution. > > Example: > > Given in.rra with step size 300 and initial RRA definitions of > RRA:AVERAGE:0.5:1:100 and RRA:MAX:0.5:6:1000 the command > > rrdtool modify -s 60 in.rrd out.rrd RRA:AVERAGE:0.5:1:250 > > should result in out.rrd having 3 RRAs with definitions of > RRA:AVERAGE:0.5:1:250 (just added) and RRA:AVERAGE:0.5:5:100 and > RRA:MAX:0.5:30:1000. In addition, the new RRA will have been populated > using data from the pre-existing AVERAGE RRA. > > > It is not (yet?) possible to increase the step size, mostly because the > use case is not entirely clear and additional requirements regarding the > old and new step sizes have to be met. there are sometimes people who start a database with way to much data and then later re-consider ... > Tobi: This should be pull-able... although the travis integration still > does not work as it should. merged, and it passed travis! (I had changed your scripts a bit the other day to make it work). cheers tobi -- Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland www.oetiker.ch [email protected] +41 62 775 9902 _______________________________________________ rrd-developers mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-developers
