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To: Sebastian Moeller <moeller0@gmx.de>, Pete Heist <pete@heistp.net>
Cc: Cake List <cake@lists.bufferbloat.net>
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Date: Mon, 30 Jul 2018 12:55:00 +0200
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Subject: Re: [Cake]
	=?utf-8?q?Using_cake_to_shape_1000=E2=80=99s_of_users=2E?=
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Sebastian Moeller <moeller0@gmx.de> writes:

> Hi Pete
>
>> On Jul 30, 2018, at 11:14, Pete Heist <pete@heistp.net> wrote:
>>=20
>>=20
>>> On Jul 29, 2018, at 9:14 PM, Toke H=C3=B8iland-J=C3=B8rgensen <toke@tok=
e.dk> wrote:
>>>>=20
>>>> Caveats that I know of:
>>>> - Limited to 1024 members
>>>> - No fairness between flows
>>>=20
>>> You could assign more than one queue per customer and hash traffic
>>> between them in BPF=E2=80=A6
>>=20
>> True. There will always be that limit of 1024 (in my case I=E2=80=99ll n=
eed 800).
>
> I believe all you needto do is change the following in scg_cake.c:
> #define CAKE_QUEUES (1024)
>
> Now I heard reports that above a certain number this breaks, but it
> might be enough for 32K or even 64k, or ~32 to 64 queues per customer,
> which might already help to spread out things a bit...

Has to fit in 16 bits, so 64k is the max; we really ought to have made
that parameter configurable...

-Toke