[rrd-users] Graphing

Steve Shipway s.shipway at auckland.ac.nz
Tue Jul 12 00:40:41 CEST 2011

The rrdtool database is designed to accept a constant flow of data points at
a regular interval (eg, every 5minutes, although you can do it every 5
seconds) and you can then use functions in the library to produce graph
images  on demand.


If you data are coming in at irregular intervals, or are not
time-series-based, then rrdtool may not be the right database for you to


There is a large amount of online documentation available for you to read on
the rrdtool website; I'd suggest you work through this and familiarise
yourself with the system first.  If you have specific questions about a
particular aspect of rrdtool use then post them here; very generic questions
will just get you referred to the documentation as none of us have time to
explain everything in detail when you don't have the foundation knowledge


Take a look at MRTg/RRD to see what sort of graphing you can do real-time -
demo at






Steve Shipway

ITS Unix Services Design Lead

University of Auckland, New Zealand

Floor 1, 58 Symonds Street, Auckland

Phone: +64 (0)9 3737599 ext 86487

DDI: +64 (0)9 924 6487

Mobile: +64 (0)21 753 189

Email:  <mailto:s.shipway at auckland.ac.nz> s.shipway at auckland.ac.nz

P Please consider the environment before printing this e-mail 



From: rrd-users-bounces+s.shipway=auckland.ac.nz at lists.oetiker.ch
[mailto:rrd-users-bounces+s.shipway=auckland.ac.nz at lists.oetiker.ch] On
Behalf Of othmane zine
Sent: Monday, 11 July 2011 8:25 p.m.
To: rrd-users at lists.oetiker.ch
Subject: Re: [rrd-users] Graphing



I get data froman other computer every 5 seconds and so I add the to my rrd
base whenever i get them I succeded to graph all data in database by using
options start & stop (historic) but still don't know how can I do real time
graphing just like if I want to keep the graph and the graph container and
just add a point in the graph whenever I receive data


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