Re: [Bloat] Looking for a citation...

[David Lang <david@lang.hm>]

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Also, the highest wifi speeds are only achievable with build traffic to a single 
client (or with mu-mimo to a small number of clients), it's not that with n 
clients, each gets anywhere close to 1/n bandwith. And if you add a single 
slower device to the network, it will eat much more airtime than it's bandwidth 
would indicate.

David Lang

On Sun, 18 Aug 2024, Dave Taht via Bloat wrote:

> Date: Sun, 18 Aug 2024 08:47:02 -0700
> From: Dave Taht via Bloat <bloat@lists.bufferbloat.net>
> Reply-To: Dave Taht <dave.taht@gmail.com>
> To: Jan Ceuleers <jan.ceuleers@gmail.com>
> Cc: bloat@lists.bufferbloat.net
> Subject: Re: [Bloat] Looking for a citation...
> 
> Actually I feel that at speeds greater than *50*Mbits, most of the bloat
> moves to the wifi, but perhaps I should qualify it more, Modern wifi can do
> almost 2gbits a few feet from the AP, but still has a dynamic range of
> 5Mbit to 2gbit. Interference, contention, range, all factor into when you
> hit a FIFO "cliff", and stay there.
>
> I wish I knew how many commercial APs outside of eero, cisco meraki,
> gfiber, and starlink have adopted fq_codel. Certainly I am pleased as punch
> at openwrt's adoption. And seeing at least a few fiber folk shipping better
> wifi.
>
> Moreso, if only more vendors did a RvRvlatency test like:
> http://flent-newark.bufferbloat.net/~d/Airtime%20based%20queue%20limit%20for%20FQ_CoDel%20in%20wireless%20interface.pdf
>
> A hugely mitigating factor is people self adapting to move closer to the AP
> (or mesh), another is most traffic never cracks 20 mbit for very long.
>
> I am sad that every coffee shop I frequent save one, has horrible
> bufferbloat, but it  usually only shows up when you try to do s
> videoconference.
>
>
>
> On Sun, Aug 18, 2024 at 8:32 AM Jan Ceuleers via Bloat <
> bloat@lists.bufferbloat.net> wrote:
>
>> On 18/08/2024 11:08, Rich Brown via Bloat wrote:
>>> In various posts, I have baldly asserted that "above 300-500mbps ISP
>> links, all the bufferbloat moves into the Wi-Fi."
>>>
>>> I am pretty sure that I someone on these lists stated that as fact.
>>>
>>> Could I get a link to a discussion that is definitive? Or a statement
>> that is actually true that I can incorporate into my future posts? Many
>> thanks.
>>
>> Quite evidently there are WiFi access points and clients available whose
>> speeds exceed 500 Mbit/s, so in order to be able to make such a claim
>> one would need to know the extent to which those newer WiFi technologies
>> are not yet deployed.
>>
>> _______________________________________________
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>
>
>

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