On Mon, Nov 19, 2007 at 10:57:10PM +0100, Alex van den Bogaerdt wrote:
> I think I may have found the problem. If I'm right, it was introduced
> between versions 1.2.20 and 1.2.21
>
> I'll ask this on the developers list.
Indeed this was the problem. It occurs only if you have negative rates,
and if you do not set lower-limit low enough.
Tobi has produced a patch which does seem to work.
A possible workaround for those who suffer from the problem but
cannot yet upgrade:
Find the lowest value (using PRINT:x:MINIMUM:%6.2lf), multiply the
number by a suitable amount (say 1.01) and use it as --lower-limit
in the final rrdtool graph command.
Thus:
min=$(rrdtool graph .... PRINT:... )
(no AREA, LINE, GPRINT in this invocation)
and then
rrdtool graph --lower-limit $min .... AREA:... GPRINT:...
as usual
or just wait for 1.2.26 !
HTH
--
Alex van den Bogaerdt
http://www.vandenbogaerdt.nl/rrdtool/
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