[rrd-users] peaks ÿan

crtrepan at ca.ibm.com crtrepan at ca.ibm.com
Tue Mar 19 15:26:06 MET 2002

I am monitoring a T1 line, mrtg does the data collection for rrdtool.

I still have the old machine running pure MRTG and I see a peak on the T1
at 122.5kBs (98%).

On the test machine I see nothing for the duration of the peak; this is the
definition of the RRD (done by mrtg)
ds[ds0].type = "COUNTER"
ds[ds0].minimal_heartbeat = 600
ds[ds0].min = 0.0000000000e+00
ds[ds0].max = 1.2500000000e+05
ds[ds0].last_ds = "1910596238"
ds[ds0].value = 1.4961330000e+04
ds[ds0].unknown_sec = 0

but this is what a fetch shows as the data:
1016456400: 1.1284171480e+05 9.5934810889e+03
1016456700: 1.1345647667e+05 9.1879496000e+03
1016457000: nan 2.5609493156e+04
1016457300: nan 1.0274055533e+04
1016457600: nan 9.4457169333e+03
1016457900: nan 1.4213377662e+04
1016458200: nan 1.0769259249e+04

I would suspect an out of range value but mrtg reports only 122K while the
max is set at 125K.

Anyone have a clue?

(mrtg is  2.9.12a and rrdtool is 1.0.33)

Claude R Trépanier
Support de l'infrastructure du réseau
IBM Bromont

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