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From: "Toke Høiland-Jørgensen" <toke@toke.dk>
To: Pete Heist <pete@heistp.net>
Cc: Cake List <cake@lists.bufferbloat.net>
Subject: Re: [Cake] Using cake to shape 1000’s of users.
Date: Tue, 31 Jul 2018 00:17:56 +0200	[thread overview]
Message-ID: <87h8kgz7u3.fsf@toke.dk> (raw)
In-Reply-To: <050BE1E9-5582-422B-B9C4-958EFEB4749D@heistp.net>

Pete Heist <pete@heistp.net> writes:

>> On Jul 30, 2018, at 1:28 PM, Toke Høiland-Jørgensen <toke@toke.dk> wrote:
>> 
>> Pete Heist <pete@heistp.net> writes:
>> 
>>> Couldn’t it still be made so now? Not sure of the performance impact
>>> though.
>> 
>> It could, but it would take some care. There's the issue of
>> power-of-two-ness and avoiding divides that Jonathan pointed out, and
>> the memory allocation would be complicated somewhat. Certainly doable,
>> but I'm not sure it's worth it for its own sake if the plan is to build
>> a new qdisc anyway...
>
> Fair enough, we’ll see.
>
> The challenge now is eBPF classification doesn’t look like it will be
> usable on 3.16 (on FreeNet's routers). Maps weren’t introduced until
> 3.18 and tc support in 4.1. I’ll see what upgrades are possible.
>
> Also, if ISP Cake is a new qdisc, I don’t see now why it would need to
> support kernel versions where scalable classification by IP or MAC
> isn’t practical to do. The hard lower limit seems like 4.1, but also
> direct-action mode in 4.4 would be good for performance, and without
> the LPM trie in 4.11, classification by subnet would be more
> difficult...

Yeah, you'll probably need a newish kernel to do all the stuff you want
with eBPF...

-Toke

  reply	other threads:[~2018-07-30 22:17 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-17  7:24 Felix Resch
2018-07-17 16:59 ` Dave Taht
2018-07-26 15:46   ` Dan Siemon
2018-07-26 15:48     ` Dave Taht
2018-07-26 18:07       ` Dan Siemon
2018-07-28 15:51         ` Dave Taht
2018-07-28 16:11           ` Jonathan Morton
2018-07-28 16:36             ` Dave Taht
2018-07-26 17:42     ` Toke Høiland-Jørgensen
2018-07-26 18:10       ` Dan Siemon
2018-07-26 21:09         ` Toke Høiland-Jørgensen
2018-07-26 21:38           ` Jonathan Morton
2018-07-27  9:25             ` Pete Heist
2018-07-27 14:04             ` Dan Siemon
2018-07-27 18:58               ` Jonathan Morton
2018-07-28  8:56                 ` Toke Høiland-Jørgensen
2018-07-28 15:04                   ` Dave Taht
2018-07-28 16:19                     ` Jonathan Morton
2018-07-28 16:39                       ` Dave Taht
2018-07-28 17:01                     ` Pete Heist
2018-07-28 17:37                   ` Pete Heist
2018-07-28 17:52                     ` Dave Taht
2018-07-28 17:56                       ` Dave Taht
2018-07-28 18:12                         ` Toke Høiland-Jørgensen
2018-07-29  0:17                           ` Pete Heist
2018-07-29 19:14                             ` Toke Høiland-Jørgensen
2018-07-30  9:14                               ` Pete Heist
2018-07-30 10:09                                 ` Sebastian Moeller
2018-07-30 10:55                                   ` Toke Høiland-Jørgensen
2018-07-30 11:05                                     ` Pete Heist
2018-07-30 11:28                                       ` Toke Høiland-Jørgensen
2018-07-30 22:10                                         ` Pete Heist
2018-07-30 22:17                                           ` Toke Høiland-Jørgensen [this message]
2018-07-31  7:31                                             ` Jonathan Morton
2018-07-30 10:55                                   ` Pete Heist
2018-07-30 11:05                                     ` Jonathan Morton
2018-07-28 17:53                     ` Jonathan Morton
2018-07-28 18:07                       ` Dave Taht
2018-07-28 18:17                       ` Toke Høiland-Jørgensen
2018-07-28 19:35                         ` [Cake] 1000s " Dave Taht
2018-07-29 23:24                     ` [Cake] Using cake to shape 1000’s " Dave Taht
2018-08-07  1:46                 ` Dan Siemon
2018-07-28  7:18             ` Pete Heist
2018-07-28  8:06               ` Jonathan Morton
2018-07-28 16:41                 ` Pete Heist
2018-07-28 17:32                   ` [Cake] isp economics Dave Taht
2018-07-28 18:39                     ` Pete Heist
2018-07-28 19:03                       ` Dave Taht
2018-07-28 20:00                         ` Pete Heist
2018-07-29  5:49                         ` Loganaden Velvindron
2018-07-28 19:09                       ` Dave Taht
  -- strict thread matches above, loose matches on Subject: below --
2018-07-16 18:39 [Cake] Using cake to shape 1000’s of users Mike
2018-07-16 19:01 ` Jonathan Morton
2018-07-16 19:13 ` Michel Blais

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