[rrd-users] Double NaN with GAUGE

[Stephan Harren]

Hi All,

I've got a problem with GAUGE. If I miss one Datapoint and it gets unknown, 
the next Datapoint gets unknown, too. This happens if I :

/usr/local/rrdtool-1.0.39/bin/rrdtool create test.rrd --start $timestamp 
--step 300 DS:updown:GAUGE:300:0:1 RRA:LAST:0.5:1:105120

/usr/local/rrdtool-1.0.39/bin/rrdtool update test.rrd -t updown 1048542000:1
/usr/local/rrdtool-1.0.39/bin/rrdtool update test.rrd -t updown 1048542600:1

Then 1048542300 and 1048542600 will be NaN.

Same if I use 450 as heartbeat.

If I:

/usr/local/rrdtool-1.0.39/bin/rrdtool create test.rrd --start $timestamp 
--step 300 DS:updown:GAUGE:600:0:1 RRA:LAST:0.5:1:105120

/usr/local/rrdtool-1.0.39/bin/rrdtool update test.rrd -t updown 1048542000:1
/usr/local/rrdtool-1.0.39/bin/rrdtool update test.rrd -t updown 1048542600:1

Then none of them will be NaN.

How can I make it that just 1048542300 is NaN, like it should be?

Best regards,

Stephan
-- 
Stephan Harren
Manager Site Operations
MFN-IS
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Phone +49 69 90554 153
Fax +49 69 90554 111
Cell +49 173 7011126

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