linux-kernel - Re: [PATCH] mac80211: improve PID rate control mechanism by avoiding rate oscillation problem

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Date:	Wed, 29 Feb 2012 09:31:03 +0100
From:	Johannes Berg <johannes@...solutions.net>
To:	YIN Wei <yinwei168@...il.com>
Cc:	linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
	mattias.nissler@....de, stefano.brivio@...imi.it
Subject: Re: [PATCH] mac80211: improve PID rate control mechanism by
 avoiding rate oscillation problem

On Wed, 2012-02-29 at 12:17 +1000, YIN Wei wrote:
> From: Wei YIN

You want an email address here,

> Improve PID rate control mechanism by solving the rate oscillation
> problem. Current PID mechanism is based on a PID  controller which
> tries to minimise the difference between the frame loss ratio (FLR)
> and the target FLR. Therefore it is straight forward that it increases
> to a higher rate when the FLR is less than the target without thinking
> whether the higher rate can be supported. If the higher rate cannot be
> supported, significant FLR will occur, which causes the mechanisms to
> decrease the rate sharply. The proposed approach only updates the rate
> when the proposed rate by the PID controller can achieve better
> throughput than the old rate. This patch applies to kernel 3.3.0.
> Signed-off-by: Wei YIN

and here.

Also since you sent as HTML, it never made it to the list and can't be
applied as a patch, care to resend?

johannes


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