aleluya <[email protected]> wrote: > I am learning RRDtool, I can't find any documents that describe what would > happen when multiple sampling points were inserted in a single step.
http://www.vandenbogaerdt.nl/rrdtool See his tutorial on Rates, normalizing and consolidating > Here's my test: > > rrdtool create mydata6.rrd --start 1396419600 --step 4 > DS:mem:GAUGE:2000:0:4000000 RRA:AVERAGE:0.5:1:50 > > rrdtool updatev mydata6.rrd 1396419601:8 1396419604:14 > > I got the output: > return_value = 0 > [1396419604]RRA[AVERAGE][1]DS[mem] = 1.2500000000e+001 > > In the example above, the step is 4 seconds, I insert two sampling points > whose value are 8 and 14 respectively, why I got the CDP value 12.5? You had one second @ 8 somethings/s, and 3 seconds at 14 somethings/s. (8 * 1) + (14 * 3) = 50 50 / 4 = 12.5 Or calculating it another way : 8 * (1/4) = 2 14 * (3/4) = 10.5 2+10.5 = 12.5 _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
