netdev - Re: Multiqueue TX

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Message-ID: <CAJzFV36cL9=qNcF-cb0OSx1A39FP2Gaa98HBqr9D35fQ3BfU=Q@mail.gmail.com>
Date:	Mon, 28 Jul 2014 16:37:25 -0600
From:	Sharat Masetty <sharat04@...il.com>
To:	Linux Netdev List <netdev@...r.kernel.org>
Cc:	David Miller <davem@...emloft.net>
Subject: Re: Multiqueue TX

Hi David,

Can you please answer my question when you get a chance?

Regards,
Sharat

On Sat, Jul 26, 2014 at 1:31 AM, Sharat Masetty <sharat04@...il.com> wrote:
> I have a question from this David's nice presentation
> http://vger.kernel.org/~davem/davem_nyc09.pdf on multiqueue TX. My
> questions are on the slide named "PICTURE WITH NON-TRIVIAL QDISC"
>
> 1)  What is the rationale behind such an arrangement, where one would
> have multiple TX queues pointing to the on single Qdisc?
> 2)  If the Qdisc in this illustration was a non trivial Qdisc such as
> htb, which has multiple leaf Qdisc's, how would the traffic shaping be
> preserved?
> 3) How would the back pressure/flow control of these individual TX
> queues work in this case?
>
> Thanks
> Sharat
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