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From: Alan Jenkins <alan.christopher.jenkins@gmail.com>
To: Jonathan Morton <chromatix99@gmail.com>
Cc: cake@lists.bufferbloat.net
Subject: Re: [Cake] How to test Cake on TP-Link WDR3600
Date: Sun, 26 Jul 2015 22:38:27 +0100	[thread overview]
Message-ID: <55B55353.5030104@gmail.com> (raw)
In-Reply-To: <CAJq5cE0vFCHL=Hg=Aw=cWyDqtt9CDgqXYhwsRHVb-VLDd409Hw@mail.gmail.com>

On 26/07/15 22:20, Jonathan Morton wrote:
>
> Three reasons why a stackable peeler doesn't work so well:
>
> - There is some overhead from stacking, due to passing packets up and 
> down the stack.
>

> It also incurs at least one packet of unmanaged buffer.
>

> - A separate qdisc would not have the information about link bandwidth 
> and active flow count that cake maintains, and uses to influence the 
> peeler.
>

Sold!  Not that I'm a netdev reviewer, but it's a nice explanation of 
the design.

I.e. cake knows the minimum processing necessary to achieve the goal.  
The rest can still be left to hardware.

And now I recall peeling came from tbf, I guess it's not that odd.

Thanks for the illumination.
Alan

> - Peeling to individual IP packets is strictly necessary when 
> encapsulation overhead needs to be calculated.
>
> - Jonathan Morton
>


  reply	other threads:[~2015-07-26 21:38 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-25 15:45 Alec Robertson
2015-07-25 16:27 ` Sebastian Moeller
2015-07-25 16:40   ` Alec Robertson
2015-07-25 16:49   ` Alec Robertson
2015-07-25 17:15     ` Sebastian Moeller
2015-07-25 17:38       ` Alec Robertson
2015-07-25 18:12         ` Dave Taht
2015-07-25 18:21           ` Alec Robertson
2015-07-25 18:49             ` Sebastian Moeller
2015-07-25 18:47         ` Sebastian Moeller
2015-07-25 18:57           ` Alec Robertson
2015-07-25 19:19             ` Sebastian Moeller
2015-07-25 20:58               ` Alec Robertson
2015-07-26  7:01                 ` Sebastian Moeller
2015-07-26  9:11                   ` Alan Jenkins
2015-07-26 12:32                     ` Alec Robertson
2015-07-26 12:35                       ` Jonathan Morton
2015-07-26 20:09                         ` Alec Robertson
2015-07-26 21:05                           ` Alan Jenkins
2015-07-26 21:20                             ` Jonathan Morton
2015-07-26 21:38                               ` Alan Jenkins [this message]
2015-07-27  7:17                               ` Sebastian Moeller
2015-08-02 19:04                             ` Benjamin Cronce
2015-08-02 20:07                               ` Dave Taht
2015-07-27  7:13                           ` Sebastian Moeller
2015-07-27  7:10                       ` Sebastian Moeller

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