[rrd-users] Odd mismatch in fetch results (via Perl/CLI)

Steve Shipway s.shipway at auckland.ac.nz
Wed Jan 5 21:44:32 CET 2011

Can you post the structure of your RRD file -- IE, what parameters are used to create it, or an 'rrdtool info' dump if this is not available.  It may well be connected with the length of the available RRAs as RRDTool will do the best it can if the RRAs are not available for the resolution and time window requested.


Steve Shipway
University of Auckland ITS
UNIX Systems Design Lead
s.shipway at auckland.ac.nz
Ph: +64 9 373 7599 ext 86487

From: rrd-users-bounces+s.shipway=auckland.ac.nz at lists.oetiker.ch [rrd-users-bounces+s.shipway=auckland.ac.nz at lists.oetiker.ch] on behalf of Marco Marongiu [brontolinux at gmail.com]

I am fetching data from RRD files via Perl modules. For all files but
one I get the results I expect. For just one I get data as like I
shifted the start/end interval one hour back. If I fetch from the
command line using "rrdtool fetch", data comes out as expected.

I am using:
Ubuntu Linux 10.04.1 LTS
rrdtool 1.3.8 (ubuntu package)
RRDs version 1.3008 (perl -MRRDs -le 'print $RRDs::VERSION')
RRDTool::OO 0.28 (perl -MRRDTool::OO -le 'print $RRDTool::OO::VERSION')

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