Code review comment for lp:~lucio.torre/txstatsd/make-ewma-sampling-faster

now it also changes the rescale threshold so the difference is never bigger than 600 because:

In [21]: math.exp(717)
---------------------------------------------------------------------------
OverflowError Traceback (most recent call last)

/home/lucio/canonical/txstatsd/fix-memory-issues/<ipython console> in <module>()

OverflowError: math range error