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<div style=""> Your DS are of type 'derive', with a minimum value of 0. 'Derive' stores the rate of change of the variable, IE (( x - x(prev))/(t-t(prev))) This means you'll need at least two sequential updates, which must be increasing (in order to get a
valid positive derivitive) before you'll see anything stored in the RRAs. Since your step is 60s, this means two increasing updates about 1min apart, and more than 2 (4, 13, 145) if you want any of the RRAs with a cdp of more than 1 to show a value (since
your XFF is 0.5).<br>
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Steve<br>
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<div style="font-family: Tahoma; font-size: 13px;"><strong>Steve Shipway</strong></div>
<div style="font-family: Tahoma; font-size: 13px;">University of Auckland ITS</div>
<div style="font-family: Tahoma; font-size: 13px;"><em>UNIX Systems Design Lead</em></div>
<div style="font-family: Tahoma; font-size: 13px;"><a href="mailto:s.shipway@auckland.ac.nz">s.shipway@auckland.ac.nz</a></div>
<div style="font-family: Tahoma; font-size: 13px;">Ph: +64 9 373 7599 ext 86487</div>
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<div style="direction: ltr;" id="divRpF526632"><font size="2" color="#000000" face="Tahoma"><b>From:</b> rrd-users-bounces+s.shipway=auckland.ac.nz@lists.oetiker.ch [rrd-users-bounces+s.shipway=auckland.ac.nz@lists.oetiker.ch] on behalf of Wouter van Eekelen
[wouter.van.eekelen@serverffs.com]<br>
<b>Sent:</b> Sunday, 5 December 2010 8:09 a.m.<br>
<b>To:</b> rrd-users@lists.oetiker.ch<br>
<b>Subject:</b> [rrd-users] RRDTool not accepting any updates (NaN instead)<br>
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<div><span class="Apple-style-span" style="font-family: arial,sans-serif; font-size: 13px; border-collapse: collapse;">I'm having a huge trouble with RRDtool, all updates I'm doing are accepted as 'NaN'
<div>Here is are all commands with output:</div>
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