RRDTOOL TALK NOTES


http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/


- diff between this talk and others

  (show examples do demo flexibility)


- why only time-based graphing?


- fundamental problem:

   * collect statistics periodically (via any method)
   * store in some database (size!!!)
   * graph data whenever user wants to

  (rrdtool is tool to help with generic parts above)


- explain rrdcreate, rrdupdate, rrdgraph

   * man pages
   * tutorials
   * examples

       - car speed example (from rrd tutorial)
       - simple (input/output)
       - complex (consolidation functions)


- rapid prototyping

   (2 methods: fake data :: real data hack job over short intervals)

   * fake data example (rrdupdate speed problem, next session -> C interface)
   * hack job example


- using rrdtool from programs

   * librrd0 (show orca)
   * rsd (licensing problem, synchronization problem, bugs :: mink)

   (other interfaces: php, perl, etc :: rrdtool source)