Graphite is awesome; I've been stuffing more and more of our operational metrics into it since 2010. It is, however, not RRD: http://graphite.readthedocs.org/

Graphite is awesome; I've been stuffing more and more of our operational metrics into it since 2010. It is, however, not RRD: http://graphite.readthedocs.org/en/latest/whisper.html#differences-between-whisper-and-rrd http://graphite.readthedocs.org/en/latest/whisper.html#diffe... Having said that, Graphite does not use THE RRD, but it is a kind of round robin database. :-)