On Tue, 2017-01-31 at 12:07 -0800, Rajkumar Manoharan wrote:

As moving average is not considering fractional part after
certain ratio, it will stuck at the same state. For example
with current values, moving average stuck at 96 and it will
not move forward. Fortunately current threshold is matching
against 95%. If thresold is increased more than 96, mesh path
never be deactivated under worst case. Fix failure average
movement by bumping up average at stuck state.

This is ... really strange to me.

Can't we just actually take into account fractional parts instead?

I think you should instead convert this to the EMWA helpers (see
include/linux/average.h).

johannes