[mrtg] Re: Forecasting

[Alex van den Bogaerdt]

Daniel Curry wrote:
> 
> Does anyone know of a way to use the MRTG data to forecast or predict
> what a cahrt will look like on a future date?  I am tracking disk
> storage volumes, and am ttrying to find a way to predict when a
> partition will need to be supplemented with new disks.  I can look at
> the charts and guess that we will need a disk on a particular partition
> with in 60 days if th etren dcontinues, but management would be much
> happier to get in a report generated by the monitor system.
> 

This assumes that you have a predictable growth only.  Personally I wouldn't
let a computer do this task.  How would it know about future upgrade
plans, software installs, increasing user numbers, etcetera?

The computerprogram should be at least as clever as you and as we all
know computers are just dumb things.

If you are smart enough to include *ALL* variables that you use to estimate
the usage of your disks in 60 days, you could use the data from the logfiles.
Just take the values in column two and/or three, they represent the
average increase. The format of the logfiles are described in the doc dir.
Look at the differences in that averages, their trend, their current value
and previous values.  Add some black magic to extrapolate the line and
your finished.

Good luck with your programming, 
-- 
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 / alex at slot.hollandcasino.nl                  alex at ergens.op.het.net \
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