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RRD – Round
Robin Database
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Developed by
Tobi Oetiker
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Tracks
variable over time (min, max, avg, last)
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Fixed dBase
size after creation because data ‘drops’ out of
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dBase
(‘circle analogy’)
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Database
definitions cannot be changed later and one cannot go
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back in time
if data is missing
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Round Robin
Archives also defined in the dBase relate to
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different
time periods, e.g. daily, weekly, monthly, yearly
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Longer time
periods will naturally have lesser resolution
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RRDTool is
used to insert data into RRD and plot graphs
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http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/index.html
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