[rrd-users] Re: Help needed on rrdtool create and rrdtool update

Serge Maandag serge.maandag at staff.zeelandnet.nl
Fri Jul 6 10:16:55 MEST 2001

Hmm, what I do see is that you have a heartbeat of 3600 secs. Your
updates (at least the first two ones, didn't check the other ones) on
the other hand are made with a 7200 sec interval. This is well over the
heartbeat threshold, so rrdtool will take the value for a NaN.

Read up on the heartbeat and the step @


/usr/local/rrdtool-1.0.28/bin/rrdtool create
--step 3600 \
DS:Flipper_Drops:GAUGE:3600:0:U \

/usr/local/rrdtool-1.0.28/bin/rrdtool update
994176000:3 994183200:1 994190400:1 994194000:4 994197600:4 994201200:5
994204800:4 994212000:8 \

/usr/local/rrdtool-1.0.28/bin/rrdtool fetch
missing-> 994176000: NaN
 994179600: NaN
missing->  994183200: NaN

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