[smokeping-users] Reading the rrdtool xml dump and tie out graph

David Anderson - Macomb dwanderson at macomb.com
Mon Jan 28 16:03:57 CET 2008

I am trying to tie out the data in the rrd file and the graphs created by

I have install rrdtool, and can dump the data to an xml file.

I am fairly sure that I am just pointing out my own ignorance here, but I am
not able to tie out the data and the graph. When I dump the data to an xml
file, and I get some thing like the following:

<lastupdate> 1201287439 </lastupdate> <!-- 2008-01-25 12:57:19 CST -->

Should I be able to generate a graph for just this time frame:

e.g. by entering a time frame: 2008-01-25 12:57:19 to 2008-01-25 12:57:19

When I try this, it gives me a single plot graphed out. Then I expect that
the remainder of the data in this xml file would/should match with what is
plotted. So I am taking the uptime, loss, median, and ping1 -> ping20.
Converting the values from sci notation and I expect that they should match
what is plotted. But I get a medial value like = .0027847821400 and on the
graphs it is declaring a median value of 25.4 us avg. Am I missing a step or
some other simple math step?

Again, very sorry for the trouble & my own ignorance in these matters, but I
will need to be able to explain my findings, and I cannot be very confident
in it if I cannot tie it out.

Thanks for any support with these matters.

... course don't ever tell anybody that they're not free cause then they
gonna get real busy killen and maimin to prove to you that they are  -
George Hanson
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