From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?utf-8?Q?Toke_H=C3=B8iland-J=C3=B8rgensen?= <toke@toke.dk>
Date: Tue, 10 May 2016 09:14:14 -0000
Subject: [ath9k-devel] [Make-wifi-fast] Diagram of the ath9k TX path
In-Reply-To: <alpine.DEB.2.02.1605092200440.23321@nftneq.ynat.uz> (David
	Lang's message of "Mon, 9 May 2016 22:22:22 -0700 (PDT)")
References: <871t5bpkc7.fsf@toke.dk>
	<CAA93jw5v0orW9hHsKw7LuL7HnN2eJUU4qYuh_oPUeV84qXZutg@mail.gmail.com>
	<6ADC1A9D-72C9-47A5-BDC7-94C14ED34379@gmail.com>
	<CAA93jw5drf2MXGS6jxsY0DBS1ZgmQ3oE5EBhtXTqyZ46vFHGTg@mail.gmail.com>
	<alpine.DEB.2.02.1605092003130.6517@nftneq.ynat.uz>
	<CAA93jw48JU3FFJDtwvX_3AwbFYQUbzah0iWcXt6Ko1aHD2AP5g@mail.gmail.com>
	<alpine.DEB.2.02.1605092200440.23321@nftneq.ynat.uz>
Message-ID: <87vb2mmgg5.fsf@toke.dk>
List-Id: <ath9k-devel.lists.ath9k.org>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: ath9k-devel@lists.ath9k.org

David Lang <david@lang.hm> writes:

> There are two parts to this process
>
> 1. the tactical (do you send the pending packet immediately, or do you
> delay it to see if you can save airtime with aggregation)

A colleague of mine looked into this some time ago as part of his PhD
thesis. This was pre-801.11n, so they were doing experiments on adding
aggregation to 802.11g by messing with the MTU. What they found was that
they actually got better results from just sending data when they had it
rather than waiting to see if more showed up.

-Toke