On Tuesday 17 December 2002 15:11, Fernando Nieto wrote: > Hi everyone, > > Here I'm sending three graphs, all of them are from the > same data file. > > 1) sample-mrtg is the daily graph generated from mrtg's > rateup > 2) sample-alt-y-grid is the same graph generated from the > rrd file with rrdgraph and setting the option > --alt-y-grid > 3) sample-alt-y-mrtg is generated with rrdgraph from the > rrd file with the option --alt-y-mrtg > > As you can see, graphs 1 and 2 show the same values, but not > graph 3, where for example at 12:00 Out traffic is ~2G and > not ~1.6G. >
I do not agree, data displayed are the same :), but there is bug in rounding/scaling data to fit the max allowed graph heigth. So data displayed are correct, as you can see from labels below graph - minima and maxima are the same, y label is incorrectly computed. But yes, from outer perspective it looks as bad data. > Values represented with --alt-y-mrtg seems to be more than > 25% higher than the true data stored. > > Does anyone know if this behaviour is normal or it's perhaps > a bug for --alt-y-mrtg option? > Well, this is certainly not normal and should be fixed. Initially I wrote it as a quick hack to be able to generate mrtg-like graphs, so my web pages would look more uniformly even with mixture of mrtg-generated and rrd-based graph, but I was not that succesfull implementing it. Unfortunatelly, I have only near to no time now to deal with this issue, just if you would like, we could discuss it a bit more, maybe some solution could be found. Milan -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
