I noticed this when looking into a problem one of my Hobbit users reported today. It seems that when you define a DS as a COUNTER, then it will only accept updates with integer values - except for the first time:
$ rrdtool create foo.rrd DS:virt:COUNTER:600:0:U RRA:AVERAGE:0.5:1:600 $ rrdtool update foo.rrd N:10.5 $ rrdtool update foo.rrd N:10.5 ERROR: not a simple integer: '10.5' It kind of makes sense that a counter must be an integer, but why does the first update work ok ? In comparison, GAUGE datasets work fine (of course): $ rrdtool create bar.rrd DS:virt:GAUGE:600:0:U RRA:AVERAGE:0.5:1:600 $ rrdtool update bar.rrd N:10.5 $ rrdtool update bar.rrd N:10.5 $ rrdtool update bar.rrd N:10.5 On a slightly related note, is there any way you can ask rrdtool to treat both dot and comma as decimal separators ? $ rrdtool update bar.rrd N:10,5 ERROR: conversion of '10,5' to float not complete: tail ',5' Comma is the decimal separator in some locales (e.g. danish), so "10,5" should be valid. hobbit$ export LANG=da_DK hobbit$ rrdtool update bar.rrd N:10,5 ERROR: conversion of '10,5' to float not complete: tail ',5' $ printf '%f\n' 10.5 -bash: printf: 10.5: invalid number 0,000000 $ printf '%f\n' 10,5 10,500000 Regards, Henrik _______________________________________________ rrd-developers mailing list rrd-developers@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-developers
