[rrd-users] peak generated when counter value fall to zero

[Spyou]

Hi ppl !

i've looked up after this problem in the archive of the ML and found some 
words about it dated of july 1999 ...

This problem seems to affect all my counters (simple eth plotting with snmp 
and hand-maid counter like syn packets with ntop as well)

here's what a dump looks like :
<!-- 2001-02-28 16:58:00 CET / 983375880 --> <row><v> 6.2437777778e+03 
</v><v> 1.2493902778e+04 </v>
<!-- 2001-02-28 16:59:00 CET / 983375940 --> <row><v> 8.9177872713e+05 
</v><v> 1.7907601907e+06 </v>
<!-- 2001-02-28 17:00:00 CET / 983376000 --> <row><v> 1.1760162884e+04 
</v><v> 2.4809347659e+04 </v>

Values from 16:58 and 17:00 are quite good ... but 8.9e+05 and 1.7e+06 
don't match ...

I got an MRTG running on the same eth and grabbing infos each minuts and he 
didn't report anything looking like this

I assume this is caused by a counter set to 0 but i recursivly got peak for 
70-80% of the interfaces monitored (not the same each time ... :/) at the 
same time


anybody seen this before ? pleaaase :))
____________________________________
  'Spyou' - www.spyou.org - root at spyou.org
     #gtr / ircnet.grolier.net - UIN : 6871374

We've done so much, for so long, with so little
We're now qualified to do anything with nothing.


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