[rrd-users] Re: Graph Dips

jon.hartman at verizon.com jon.hartman at verizon.com
Mon Nov 8 21:15:26 MET 2004

With apologies, I had intended to show two examples:


-----Original Message-----
From: Jonathan M. Hartman 
Sent: Monday, November 08, 2004 1:29 PM
To: 'rrd-users at list.ee.ethz.ch'
Subject: Graph Dips

I'm experiencing some symptoms that I haven't had issues with since my
purely MRTG days. Basically, traffic would ramp up to a certain number and
then it was like the peak of the graph was chopped off and started from
zero. I had always suspected counter rollover, but switching from MRTG to
rrdtool as the backend and dropping the polling interval from 5 minutes 1
seemed to alleviate the problem. I was under the impression that rrdtool
had some sort of procedure that compensated for the counter rollover
issue, but sure enough when I look at a graph that hits about 550mbps, it
happens again.

Any help in eliminating this problem would be greatly appreciated.

Thanks in advance,

-Jon Hartman

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