[rrd-users] How to handle upper limit spikes

[jeffrey.j.petter at verizon.com]

Hi,

I'm graphing various firewall data, and one of the graphs shows the number
of connections along with accepted packets. Typically, the number of
connections may be in the neighborhood of 30,000 and the packets may be in
the 1,200 - 1,800 range. Then, every other day, sometimes more frequently,
there will be a spike in packets sending it up over 10 M, which skews the
scale so severely that it makes the graph meaningless for 24 hours until
the spike has passed. I have played around with setting an upper limit, but
then the real story of the spike is never told. Is there a way to somehow
note the spike, but still keep the graph in some meaningful perspective?

Thanks,
Jeff

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