[rrd-users] log graph problems

Tobias Oetiker tobi at oetiker.ch
Mon Feb 7 08:08:56 CET 2011

Hi Jeremy,

Yesterday Jeremy Harris wrote:

> Trying to chase down a sudden lack, after a general system
> update (to Fedora 14, rrdtool 1.4.4), of all my log-scale graphs
> I get as far as im->magfact being a NaN.
> a) it isn't mentioned in rrd_graph_init() - so perhaps
>      it's only luck I'm getting a NaN
> b) the obvious calculation done by auto_scale() is discarded
>      rather than being copied into "im" by print_calc()
>      (about line 1586).   The other calc of auto_scale is done
>      by si_unit(), but that isn't called for log graphs.
> Am I way off base?    I'm certainly confused!

can you create some example rrdtool create and graph code to show
what you are doing ?


Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch tobi at oetiker.ch ++41 62 775 9902 / sb: -9900

More information about the rrd-users mailing list