On Mon, Jan 17, 2011 at 10:12:54PM -0500, Wietse Venema wrote:

> > alpha smoothing should do the trick, in this case we can start with
> > 
> >     t_0 = 0,
> > 
> > and set
> > 
> >     t_{n+1} = 0.95*t_{n} + 0.05*delta
> 
> There are many ways to arrive at a moving average.  Where do these
> magic numbers come from?

The 0.05, 0.95 magic numbers give you an average over a few tens of sample
points, that is not overly sensitive to a single spike, and purge stale
state reasonably quickly. TCP alpha smoothing uses 0.1 IIRC, I found
this to be a bit too fast.

-- 
        Viktor.

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