[rrd-users] large values equal NaN?

Greg Redder redder at yuma.acns.ColoState.EDU
Thu Dec 8 23:11:33 MET 2005

For years I've been running rrdtool as the basis for my cricket stats.
I recently noticed that values greater than about 10 billion are entered
into the database as NaN.

Here's what I do.  I collect several values via SNMP and add them together
with a shell script.  Then, the Cricket program via RRDs.pm (RRDs::update)
writes the values to the database.  However, while I can see what value is
attempted to be written, if the value is greater than about 10 billion,
the value of NaN is written instead.

I'm using rrdtool-1.2.11.

Does anyone know what this problem is?

Thank you
--Greg Redder
  Network Analyst
  Colorado State University

Greg Redder                         Academic Computing & Networking Services
Colorado State University, ACNS     Phone:(970)491-7222  FAX:  (970)491-1958
601 S. Howes, Room 625              E-mail: redder at yuma.colostate.edu
Fort Collins, CO 80523       PGP Fprint:CD62EAE6227D96FC7C232B16DFE3B5D9B2F64352

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