Prediction

[Jamie Baddeley]

Hi Mark,

I think this has been done. The stuff that Mr Hopcroft referred to 
(Holt-Winters forecasting) has been implemented in Cricket (which came out of 
webtv)

http://cricket.sourceforge.net/aberrant/rrd_hw.htm

I must admit I haven't used it.

jamie

On Fri, 18 Apr 2003 00:58, mark wrote:
> I think that would be a useful feature. I think howerver instead of just
> "prediction" we should talk more about growth and capacity planning.
> Prediction may be confused with failure prediction. With the recent
> discussions around APAN, Orca, rrd, etc, etc. I can see that prediction
> could be implemented in the performance graphing arena. For example, if
> you are graphing the historical trend of a metric, it should be reasonable
> that you could extrapolate that line out into the future. Of course the
> more history you have, the more likely that projection is to be accurate.
>
> Interesting idea. Jim, I know you've been looking at jgraph, is it capable
> of extrapolation? If not, does anyone else know of a plotting package that
> is? Maybe phplot or gnuplot?
>
> Mark
>
> On Thu, 17 Apr 2003, Steve Freegard wrote:
> > Hello,
> >
> > I've had an idea for a useful plug-in: prediction - e.g. Based on current
> > hourly/daily/weekly/monthly usage, how many hours/days/months/years will
> > it take for a device (e.g. disk/avg.cpu/avg. memory/avg. bandwith) to run
> > out of capacity or reach a set value (e.g. 80% avg cpu usage), and to be
> > able to set warning and critical values based on this.
> >
> > I'm not really sure how to implement this as it would obviously have to
> > hold the history from another plug-in and be able to work out an average
> > value over a timeperiod and then multiply the value until it reaches a
> > maximum.
> >
> > Anyone else think that this might be useful - or has anyone already
> > implemented this? or have any thoughts about how best to go about
> > implementing this?
> >
> > Kind regards,
> > Steve
> >
> > --
> > Steve Freegard
> > Systems Manager
> > Littlehampton Book Services Ltd.
> >
> >
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