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 use. 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 required. Take a look at MRTg/RRD to see what sort of graphing you can do real-time - demo at http://www.steveshipway.org/cgi-bin/routers2.pl?rtr=switches%2Fswitch.cfg <http://www.steveshipway.org/cgi-bin/routers2.pl?rtr=switches%2Fswitch.cfg&x gtype=d&if=itss-sx-s-254.net.steveshipway.org_3> &xgtype=d&if=itss-sx-s-254.net.steveshipway.org_3 Steve _____ 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.ship...@auckland.ac.nz> s.ship...@auckland.ac.nz P Please consider the environment before printing this e-mail From: rrd-users-bounces+s.shipway=auckland.ac...@lists.oetiker.ch [mailto:rrd-users-bounces+s.shipway=auckland.ac...@lists.oetiker.ch] On Behalf Of othmane zine Sent: Monday, 11 July 2011 8:25 p.m. To: rrd-users@lists.oetiker.ch Subject: Re: [rrd-users] Graphing Sorry, 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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