[rrd-users] Re: Problems with multi-DS RRD that gets asynchronous-DS updates

[steve rader]

 > > From: me
 > > [...]
 > > Then at 1999-09-16 12:45:00 CDT, it did snmpgets across
 > > a second boundary so my script stuffed values into rrd via:
 > > 
 > >   rrdtool update MadisonSD.rrd -t input 937503900:496053104
 > >   rrdtool update MadisonSD.rrd -t output 937503901:108120595
 > > 
 > > I expect the value of the DS output at 1999-09-16 12:45:00 CDT to be
 > > 1.058e+04 = (108120595 - 104956107) / 300.
 > > 
 > > But instead I get NaN:
 > > 
 > >   <!-- 1999-09-16 12:45:00 CDT --> <row><v> 6.7762683333e+04 </v> \
 > >     <v> NaN </v></row>
 > > [...]
 
 > From: Alex van den Bogaerdt
 > This means that your RRD doesn't allow for updates more than 300
 > seconds apart. Check your heartbeat settings, I bet they are 300.

I comtemplated that idea... but I have minimal_heartbeat set
to one day ala log2rrd.pl:

 bash% rrdtool dump MadisonSD.rrd | grep heartbeat
                 <minimal_heartbeat> 86400 </minimal_heartbeat>
                 <minimal_heartbeat> 86400 </minimal_heartbeat>

Other ideas?

later
steve
- - -
systems guy
wiscnet.net

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