[rrd-users] Huge 'outlier' in a graph rendering rest of graph unreadable

A Darren Dunham ddunham at taos.com
Thu Apr 23 18:08:22 CEST 2009

On Thu, Apr 23, 2009 at 09:21:03AM -0600, David Ball wrote:
>   A couple of weeks ago, a process running on one of the routers
> restarted itself, and resulted in the interface counter values being
> reset to 0.  As such, the counter value went from, say, 35000000000 in
> one reading to 16000 in the next.  While the parsing script can detect
> these types of things and 'discard' the sample when calculating the
> total bytes in/out on the interface, the value was still graphed,
> resulting in a spike to 125Gbps in the graph (obviously impossible).

You're collecting as a COUNTER?  Do you have the max on your DS set
below that impossible value?


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