1It is pretty easy to gather status information from all sorts of things, 2ranging from the temperature in your office to the number of octets which 3have passed through the FDDI interface of your router. But it is not so 4trivial to store this data in a efficient and systematic manner. This is 5where RRDtool kicks in. It lets you log and analyze the data you gather from 6all kinds of data-sources. The data analysis part of RRDtool is based 7on the ability to quickly generate graphical representations of the data 8values collected over a definable time period. 9