[rrd-users] Using the Holt-Winters algorithm for prediction of future values

Faraaz Sareshwala fsareshwala at quantcast.com
Tue Aug 18 22:43:00 CEST 2009


I am a bit confused as to how to use the Holt-Winters algorithm in RRDtool to give predictions of the future based on previous trends. I have set up an RRD file with Holt-Winters data using the following line in rrdtool create:


I have drawn the hwpredict line on the graphs, some confidence bands, and tick data from the failures rra. However, I am looking to do something like what is shown in this graph on the RRDtool gallery: http://oss.oetiker.ch/rrdtool/gallery/fsu_predict.png. Can the Holt-Winters algorithm as it is implemented in RRDtool provide this sort of prediction? If so, can someone provide some guidance on how to go about doing that? If not, how is it being done in that graph?

Thanks in advance for all the help!

Faraaz Sareshwala
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