netdev - Re: [Question]The benefit of weight_p in __qdisc

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Message-ID: <CA+U0gVhtc=ZzqY6OXamawxz4qvi_BCcoisr4=4scdc=xUKAeyw@mail.gmail.com>
Date:	Wed, 17 Dec 2014 17:32:55 +0800
From:	Dennis Chen <kernel.org.gnu@...il.com>
To:	Daniel Borkmann <dborkman@...hat.com>
Cc:	netdev <netdev@...r.kernel.org>
Subject: Re: [Question]The benefit of weight_p in __qdisc_run

On Wed, Dec 17, 2014 at 5:20 PM, Daniel Borkmann <dborkman@...hat.com> wrote:
> On 12/17/2014 09:54 AM, Dennis Chen wrote:
>>
>> weight_p is used as the burst xmit packet quota in the while loop of
>> the __qdisc_run function,
>> does anybody can elaborate the benefit of the weight_p introduced
>> here? what's the consequence without it?
>
>
> It acts as a quota to introduce fairness among qdiscs. See also slide 7
> onwards for experiments with/without it:
>
>   http://vger.kernel.org/netconf2011_slides/jamal_netconf2011.pdf

Dan, I really do appreciate for your answer :)

-- 
Den
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