[mrtg] Re: MRTG-rrd "upgrading" my circuits

[Tobias Oetiker]

Today you sent me mail regarding [mrtg] MRTG-rrd "upgrading" my circuits:

*> On occassion MRTG-rrd (2.8.12) will suddenly show my aggregate 
*> bandwidth (calculated as my frac T3 to GTEi + T1 to FroGlo + T1 to 
*> Onyx) peaking at 6 to 10 PB/s. Yes, that's a P as in PETA, as in 
*> millions of gigabytes/sec. Heh. Now I know that I'd do anything to 
*> have 6 petabytes of bandwidth-- hell, I'd be the most popular guy on 
*> earth! But since I really don't, it's a little unfortunate that my 
*> graphs show that I do.
*> 
*> For example, this weekend we were doing some NOC buildout. My 
*> graphing box was disconnected from the network for about an hour. For 
*> that hour, the graph peaked at 6 PB/s. However, later the next day, 
*> when everything was connected and running properly, it again showed 
*> peak speeds of about 4 PB/s.
*> 
*> (I fixed the graphs by going dumping the rrd's to an xml file, 
*> editing the xml file to show zero's where it had incredibly large 
*> values, and then restoring the xml file back into an rrd.)

what version of rrdtool are you using ? There were some issues which could
cause such spikes in versions before 1.0.10

cheers
tobi
*> 
*> Jon
*> 
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