From: Peter Oh <peter.oh@eero.com>
To: "Ben Greear" <greearb@candelatech.com>,
"Toke Høiland-Jørgensen" <toke@redhat.com>,
"Johannes Berg" <johannes@sipsolutions.net>
Cc: linux-wireless@vger.kernel.org,
make-wifi-fast@lists.bufferbloat.net,
John Crispin <john@phrozen.org>,
Lorenzo Bianconi <lorenzo@kernel.org>,
Felix Fietkau <nbd@nbd.name>
Subject: Re: [Make-wifi-fast] [PATCH RFC/RFT 4/4] mac80211: Apply Airtime-based Queue Limit (AQL) on packet dequeue
Date: Thu, 19 Sep 2019 11:03:23 -0700 [thread overview]
Message-ID: <df105ac6-833b-4a22-9ecc-484513a2eb9c@eero.com> (raw)
In-Reply-To: <f9b224a0-305f-9715-f627-7a5fae0988d3@eero.com>
On 9/19/19 10:54 AM, Peter Oh wrote:
>
> On 9/19/19 10:46 AM, Ben Greear wrote:
>> On 9/19/19 10:44 AM, Peter Oh wrote:
>>> On 9/19/19 5:22 AM, Toke Høiland-Jørgensen wrote:
>>>> From: Toke Høiland-Jørgensen <toke@redhat.com>
>>>>
>>>> This patch ports that idea over to mac80211. The basic idea is simple
>>>> enough: Whenever we dequeue a packet from the TXQs and send it to the
>>>> driver, we estimate its airtime usage, based on the last recorded
>>>> TX rate
>>>> of the station that packet is destined for.
>>>
>>> The way to decide the last recorded TX rate could be vary among
>>> drivers. In terms of ath10k driver and FW, they use 4 PPDUs to
>>> update the Tx rate. Isn't it too small sampling number to be used
>>> for AQL?
>>
>> Probably it is not exactly the last 4 either, since the report comes
>> back indirectly and not
>> synchronized with the tx path?
>>
The point of my question is "the last recorded Tx rate is derived from
small number of PPDUs and if it's OK to use it for AQL calculation or not".
Thanks,
Peter
next prev parent reply other threads:[~2019-09-19 18:03 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-19 12:22 [Make-wifi-fast] [PATCH RFC/RFT 0/4] Add Airtime Queue Limits (AQL) to mac80211 Toke Høiland-Jørgensen
2019-09-19 12:22 ` [Make-wifi-fast] [PATCH RFC/RFT 1/4] mac80211: Rearrange ieee80211_tx_info to make room for tx_time_est Toke Høiland-Jørgensen
2019-10-01 8:44 ` Johannes Berg
2019-10-01 9:08 ` Toke Høiland-Jørgensen
2019-10-01 9:12 ` Johannes Berg
2019-10-01 9:39 ` Toke Høiland-Jørgensen
2019-09-19 12:22 ` [Make-wifi-fast] [PATCH RFC/RFT 2/4] mac80211: Add API function to set the last TX bitrate for a station Toke Høiland-Jørgensen
2019-10-01 8:46 ` Johannes Berg
2019-10-01 9:09 ` Toke Høiland-Jørgensen
2019-09-19 12:22 ` [Make-wifi-fast] [PATCH RFC/RFT 3/4] ath10k: Pass last TX bitrate up to mac80211 Toke Høiland-Jørgensen
2019-09-19 12:22 ` [Make-wifi-fast] [PATCH RFC/RFT 4/4] mac80211: Apply Airtime-based Queue Limit (AQL) on packet dequeue Toke Høiland-Jørgensen
2019-09-19 17:44 ` Peter Oh
[not found] ` <879913e9-4254-1381-07f6-d860fb0b8de0@candelatech.com>
2019-09-19 17:54 ` Peter Oh
2019-09-19 18:03 ` Peter Oh [this message]
2019-09-19 18:18 ` Dave Taht
2019-09-19 20:09 ` John Yates
2019-09-19 20:15 ` Toke Høiland-Jørgensen
2019-09-19 18:03 ` Toke Høiland-Jørgensen
2019-09-20 12:06 ` Lorenzo Bianconi
2019-09-20 12:54 ` Toke Høiland-Jørgensen
2019-09-20 13:06 ` Lorenzo Bianconi
2019-09-20 13:32 ` Toke Høiland-Jørgensen
2019-09-20 22:38 ` Kan Yan
2019-09-20 22:55 ` Kan Yan
2019-09-21 12:11 ` Toke Høiland-Jørgensen
2019-09-25 7:37 ` Yibo Zhao
2019-09-25 8:11 ` Toke Høiland-Jørgensen
2019-09-25 11:54 ` Yibo Zhao
2019-09-25 12:52 ` Toke Høiland-Jørgensen
2019-09-26 0:27 ` Kan Yan
2019-09-26 0:34 ` Kan Yan
2019-09-26 5:57 ` Toke Høiland-Jørgensen
2019-09-26 6:04 ` Toke Høiland-Jørgensen
2019-09-26 12:53 ` Felix Fietkau
2019-09-26 13:17 ` Toke Høiland-Jørgensen
2019-09-26 13:47 ` Felix Fietkau
2019-09-26 15:19 ` Toke Høiland-Jørgensen
2019-09-27 2:42 ` Kan Yan
2019-09-27 6:12 ` Toke Høiland-Jørgensen
2019-09-27 9:20 ` Yibo Zhao
2019-09-28 20:24 ` Kan Yan
2019-09-29 19:18 ` Toke Høiland-Jørgensen
2019-10-01 4:47 ` Kan Yan
2019-10-01 6:57 ` Toke Høiland-Jørgensen
2019-09-19 14:12 ` [Make-wifi-fast] [PATCH RFC/RFT 0/4] Add Airtime Queue Limits (AQL) to mac80211 Toke Høiland-Jørgensen
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