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Subject: Re: [PATCH 4/6] mac80211: minstrel_ht: significantly redesign the
 rate probing strategy
To:     =?UTF-8?Q?Toke_H=c3=b8iland-J=c3=b8rgensen?= <toke@redhat.com>,
        linux-wireless@vger.kernel.org
Cc:     johannes@sipsolutions.net
References: <20210124122812.49929-1-nbd@nbd.name>
 <20210124122812.49929-4-nbd@nbd.name> <87o8hdmdqs.fsf@toke.dk>
 <3ac94bcf-4c76-9c1e-c903-0810d2067b3a@nbd.name> <87eei8d86d.fsf@toke.dk>
From:   Felix Fietkau <nbd@nbd.name>
Message-ID: <76519c4a-9653-1c53-2b25-09b3c500c999@nbd.name>
Date:   Mon, 25 Jan 2021 22:27:12 +0100
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On 2021-01-25 22:21, Toke Høiland-Jørgensen wrote:
> Felix Fietkau <nbd@nbd.name> writes:
> 
>> On 2021-01-25 12:56, Toke Høiland-Jørgensen wrote:
>>> Felix Fietkau <nbd@nbd.name> writes:
>>>> With this approach, we finally get a very small delta in throughput when
>>>> comparing setting the optimal data rate as a fixed rate vs normal rate
>>>> control operation.
>>> 
>>> Can you quantify this "very small delta"? Would love to see some
>>> benchmark data :)
>> Based on a quick test it seems to be around 5% (sometimes less) at VHT80
>> MCS6 nss=4 with ~350 mbit/s TCP throughput. I guess I might be able to
>> bring that down even further, once I optimize it some more.
> 
> Cool! And pre-patch?
Some users reported more than 30%

- Felix