Subject: Re: [RFC/T][PATCH][V3] mac80211: Exponential moving average
	estimate for rc80211_simple
From: Johannes Berg <johannes@sipsolutions.net>
To: Mattias Nissler <mattias.nissler@gmx.de>
Cc: "John W. Linville" <linville@tuxdriver.com>,
	linux-wireless <linux-wireless@vger.kernel.org>,
	Michael Wu <flamingice@sourmilk.net>
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References: <1196112605.8318.6.camel@localhost>
	 (sfid-20071126_213044_416915_EDBE20FD)
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Date: Tue, 27 Nov 2007 15:13:34 +0100
Message-Id: <1196172814.6058.23.camel@johannes.berg> (sfid-20071127_141348_000748_0A331296)
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On Mon, 2007-11-26 at 22:30 +0100, Mattias Nissler wrote:
> This changes rc80211_simple failed frame percentage estimation to use an
> exponential moving average method. Failed frames percentage is sampled ov=
er
> time and a smoothed average is computed. This average is examined periodi=
cally
> and the rate adjusted eventually.
>=20
> Compared to the old method this new approach is much more responsive. The=
 old
> method used plain tx success/failure counters. This made rate control ver=
y
> unresponsive after a short time of using the interface, since old data wo=
uldn't
> age properly.

Sounds sane and better than before. If it works we can apply this I
guess.

johannes

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