[mrtg] How does it get those funky numbers?

Matt Katona mkatona at comwavz.com
Mon Jul 22 14:40:16 MEST 2002

Ok, management is asking about how MRTG pulls it's numbers. This is how I understand it (i'm looking for correction/clarification)

MRTG reads the counter for an OID and records it (ie: 1000) and plots it on the graph
MRTG sleeps for five minutes then reads the counter again,  (ie: 2500). Now MRTG subtracts 1000 from 2500 and plots 1500 on the graph. 
MRTG repeats step two every 5 minutes.

But how does the "average" get calculated? 

Matthew Katona
Systems Engineer
O:419-859-2194 x1771
"Consistency is the last refuge of the unimaginative" tagged by Oscar Wilde (1854-1900)

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