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From: Jonathan Morton <chromatix99@gmail.com>
To: Adrian Chadd <adrian@freebsd.org>
Cc: "Toke Høiland-Jørgensen" <toke@toke.dk>,
	make-wifi-fast@lists.bufferbloat.net,
	ath9k-devel <ath9k-devel@lists.ath9k.org>,
	"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Subject: Re: [Make-wifi-fast] [RFC/RFT 5/5] ath9k: Count RX airtime in airtime deficit
Date: Tue, 7 Jun 2016 04:31:06 +0300	[thread overview]
Message-ID: <17429B50-653E-4D4A-A49B-A40DB5CF6311@gmail.com> (raw)
In-Reply-To: <CAJ-Vmoka=_Wv==f61ZWJe8P_KoL6jyHhpyPDah3QCn3AZbcmsA@mail.gmail.com>


> On 7 Jun, 2016, at 03:01, Adrian Chadd <adrian@freebsd.org> wrote:
> 
> I also found one of my notes in my version of this - how can we
> estimate the duration of an A-MPDU, when we only get hardware
> de-encapsulated frames?

If my understanding is correct:

The A-MPDU itself is sent at the “data” rate (selected by Minstrel), so its total size can be used to calculate this portion of its duration in the same way as any other packet.

It is also surrounded by the same framing/preamble material, sent at the fixed “control” rate, as any normal frame.

The sum of these two major components should be the total airtime, no?

Or is the difficulty in identifying which de-encapsulated frames belonged to a particular A-MPDU?

 - Jonathan Morton


  reply	other threads:[~2016-06-07  1:31 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-03 16:51 [Make-wifi-fast] [RFC/RFT 0/5] Adding an airtime fairness scheduler to ath9k Toke Høiland-Jørgensen
2016-06-03 16:51 ` [Make-wifi-fast] [RFC/RFT 1/5] mac80211: skip netdev queue control with software queuing Toke Høiland-Jørgensen
2016-06-06  2:26   ` Julian Calaby
2016-06-06 17:00     ` Toke Høiland-Jørgensen
2016-06-03 16:51 ` [Make-wifi-fast] [RFC/RFT 2/5] ath9k: use mac80211 intermediate software queues Toke Høiland-Jørgensen
2016-06-03 16:51 ` [Make-wifi-fast] [RFC/RFT 3/5] ath9k: Add airstame stats to per-station debugfs Toke Høiland-Jørgensen
2016-06-03 16:51 ` [Make-wifi-fast] [RFC/RFT 4/5] ath9k: Add a per-station airtime deficit scheduler Toke Høiland-Jørgensen
2016-06-03 16:51 ` [Make-wifi-fast] [RFC/RFT 5/5] ath9k: Count RX airtime in airtime deficit Toke Høiland-Jørgensen
2016-06-04 17:06   ` Adrian Chadd
2016-06-05 10:55     ` Toke Høiland-Jørgensen
2016-06-05 17:23       ` Adrian Chadd
2016-06-07  0:01         ` Adrian Chadd
2016-06-07  1:31           ` Jonathan Morton [this message]
2016-06-07  8:58           ` Toke Høiland-Jørgensen
2016-06-07 11:12             ` Toke Høiland-Jørgensen
2016-06-08  1:41               ` Adrian Chadd
2016-06-08 13:06                 ` Toke Høiland-Jørgensen
2016-06-10  8:40               ` Michal Kazior
2016-06-10  8:53                 ` Toke Høiland-Jørgensen
2016-06-10  9:02                   ` Michal Kazior
2016-06-10  9:08                     ` Toke Høiland-Jørgensen
2016-06-10  9:20                       ` Michal Kazior
2016-06-10  9:49                         ` Toke Høiland-Jørgensen
2016-06-10 15:33                           ` Toke Høiland-Jørgensen
2016-06-10 15:52                             ` Adrian Chadd
2016-06-04 15:24 ` [Make-wifi-fast] [RFC/RFT 0/5] Adding an airtime fairness scheduler to ath9k Luca Muscariello
2016-06-05 10:51   ` Toke Høiland-Jørgensen
2016-06-05 11:40     ` Luca Muscariello

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