[rrd-users] rrdupdate: Negative Numbers

Ryan Frantz ryanfrantz at informed-llc.com
Fri Oct 27 01:19:21 MEST 2006


I've populating some RRD databases with CPU stats queried via SNMP and
SNMP-Informant for some of my Windows systems.  I noticed that
sometimes, even when the usage is 0%, my RRD DBs get populated with a
negative number.  I'm using Net::SNMP on an FC5 system.  I tried to
ensure that a value of '0' gets passed in the event that the value
reutrned by Net::SNMP's get_request() method is less than '0' (i.e.
1.0E-1) but I still occasionally get negative values (verified with
rrddump).  This is having an effect on the graphs I generate because the
decimal point is off and it looks like the CPU has a load of 33.333m%
(example) instead of 33.3%.

Anybody have any ideas?


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