[rrd-users] Re: the good old "packet loss & rtt in the same graph" question
haroon.rafique at utoronto.ca
Mon Jan 17 16:09:24 MET 2005
On Thursday at 5:45pm, KM=>Kolus Maximiliano <Kolus.maximiliano at bcr.com.ar>...:
KM> Im another dreamer chasing the "packet loss & rtt in the same
KM> graph quest". I tried to search the archives but found no answer to
KM> this but someone changing the background when the the packet loss rate
KM> exceeded certain percentage.
KM> But what I want to do is draw this packet loss as a LINE1, being
KM> the top of the graph 100% and the bottom 0%. What I don't know is how
KM> to graph something ignoring the current scale. Ie: if I had a rtt of
KM> 500, the graph would be from 0 to 500 and a 100% packet loss would be
KM> one fifth of this graph.
KM> I tried to, I believe incorrectly, use the INF value, by doing
KM> something like this in a cdef:
KM> but it didn't work.
KM> So Im asking here if anyone accomplished this. Isnt there something
KM> like "GRAPH_TOP" and "GRAPH_BOTTOM" variable? If I knew those values, it
KM> would be easy to "scale" the packet loss.
KM> Any clues will be greatly appreciated.
Please take a look at my RTT and packet loss percentage graphs at:
Obviously my graphs are not the same as the one you described, but perhaps
by looking at mine you will be able to get some more ideas.
The front-end being used to display the graphs is rrd.cgi:
The config file is at:
Here are my DEFs and CDEFs:
My graphs were inspired by Brandon Gant's at:
Hope this helps.
<haroon.rafique at utoronto.ca>
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