[rrd-users] alt-y-mrtg rrdgraph option problem?

[Fernando Nieto]

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.

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?


Best regards,
--
Fernando
fnieto at satec.es

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