Further reading

The RRDtool webpage does provide some very good documentation on the RRDtool and the graphing functions. The features you have seen here are only a small set of what is possible with the RRDtool. Unfortunately, providing information on all of the features is beyond the scope of this book, but it is recommended to especially look at the gallery at http://oss.oetiker.ch/rrdtool/ for some ideas for the graphs. There's also an excellent website available from Alex van den Bogaerdt, which explains the functionality of RRDtool in greater detail. You can visit his page at http://rrdtool.vandenbogaerdt.nl/.

Please remember that, although Cacti does provide many of the functions of the RRDtool, there are some which may not yet be available.