* [Question]The benefit of weight_p in __qdisc_run
@ 2014-12-17 8:54 Dennis Chen
2014-12-17 9:20 ` Daniel Borkmann
0 siblings, 1 reply; 3+ messages in thread
From: Dennis Chen @ 2014-12-17 8:54 UTC (permalink / raw)
To: netdev
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?
Thanks!
--
Den
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Question]The benefit of weight_p in __qdisc_run
2014-12-17 8:54 [Question]The benefit of weight_p in __qdisc_run Dennis Chen
@ 2014-12-17 9:20 ` Daniel Borkmann
2014-12-17 9:32 ` Dennis Chen
0 siblings, 1 reply; 3+ messages in thread
From: Daniel Borkmann @ 2014-12-17 9:20 UTC (permalink / raw)
To: Dennis Chen; +Cc: netdev
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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Question]The benefit of weight_p in __qdisc_run
2014-12-17 9:20 ` Daniel Borkmann
@ 2014-12-17 9:32 ` Dennis Chen
0 siblings, 0 replies; 3+ messages in thread
From: Dennis Chen @ 2014-12-17 9:32 UTC (permalink / raw)
To: Daniel Borkmann; +Cc: netdev
On Wed, Dec 17, 2014 at 5:20 PM, Daniel Borkmann <dborkman@redhat.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
^ permalink raw reply [flat|nested] 3+ messages in thread
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2014-12-17 8:54 [Question]The benefit of weight_p in __qdisc_run Dennis Chen
2014-12-17 9:20 ` Daniel Borkmann
2014-12-17 9:32 ` Dennis Chen
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