[mrtg] Re: Options: unknaszero
troyc at titan.communitech.net
Wed Dec 19 00:07:16 MET 2001
i have(had) the exact same problem on a few ds3's and ethernet ports that
barely hit 10mb/sec. Crazy dips nearly every hour which looked like i was
having issues, but after enabling unknaszero, my graphs are smooth both
rising and falling, and no weird dips.
On Wed, 19 Dec 2001, bernie dolan wrote:
> I have an interesting situation with unknaszero.
> The interface being polled has 5 x E1 interfaces from a PABX which treats each E1 as clear channel so what I end up with is 17.2 Megs per second of traffic on a 32bit counter which rolls every 35 to 40 minutes.
> In a 5 minute interval the *.log file shows the in & out deltas only vary a maximum of 800 bytes due the consistency of the traffic from the PABX.
> My problem is:
> If I DON'T use unknaszero, the traffic is so constant that any outages are missed on the graph as they are already straight lines.
> If I DO use unknaszero then every 35->40 minutes the graph shows a sharp dip as turning on unknaszero seems to override the normalization of rolling counters
> Any suggestions?
> Bernie Dolan
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