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Date:      Sat, 14 Sep 2013 21:24:01 +0200
From:      Luigi Rizzo <rizzo@iet.unipi.it>
To:        =?ISO-8859-1?Q?Olivier_Cochard=2DLabb=E9?= <olivier@cochard.me>
Cc:        "Alexander V. Chernikov" <melifaro@yandex-team.ru>, Adrian Chadd <adrian@freebsd.org>, Andre Oppermann <andre@freebsd.org>, "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>, George Neville-Neil <gnn@neville-neil.com>, "freebsd-arch@freebsd.org" <freebsd-arch@freebsd.org>, Luigi Rizzo <luigi@freebsd.org>, "Andrey V. Elsukov" <ae@freebsd.org>, Gleb Smirnoff <glebius@freebsd.org>, FreeBSD Net <net@freebsd.org>, Luigi Rizzo <rizzo@iet.unipi.it>
Subject:   Re: Network stack changes
Message-ID:  <CA%2BhQ2%2Bj%2BxYgW60YFuu=2moO-Y8xdxbNw-nj-Nf7VVGJgN9YdpA@mail.gmail.com>
In-Reply-To: <CA%2Bq%2BTcqhoDnT1NgcCah%2BrpTzhfZ6rm5mQ7qh8BpUNn50Nb_vDA@mail.gmail.com>
References:  <521E41CB.30700@yandex-team.ru> <CAJ-Vmo=N=HnZVCD41ZmDg2GwNnoa-tD0J0QLH80x=f7KA5d%2BUg@mail.gmail.com> <6BDA4619-783C-433E-9819-A7EAA0BD3299@neville-neil.com> <20130914142802.GC71010@onelab2.iet.unipi.it> <CA%2Bq%2BTcqhoDnT1NgcCah%2BrpTzhfZ6rm5mQ7qh8BpUNn50Nb_vDA@mail.gmail.com>

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On Saturday, September 14, 2013, Olivier Cochard-Labb=E9 <olivier@cochard.m=
e>
wrote:
> On Sat, Sep 14, 2013 at 4:28 PM, Luigi Rizzo <rizzo@iet.unipi.it> wrote:
>>
>> IXIA ? For the timescales we need to address we don't need an IXIA,
>> a netmap sender is more than enough
>>
>
> The great netmap generates only one IP flow (same src/dst IP and same
> src/dst port).

True the sample app generates only one flow but it is trivial to modify it
to generate multiple flows. My point was, we have the ability to generate
high rate traffic, as long as we do tolerate a .1-1us jitter. Beyond that,
you do need some ixia-like solution.

Cheers
Luigi


> This don't permit to test multi-queue NIC (or SMP packet-filter) on a
> simple lab like this:
> netmap sender =3D> freebsd router =3D> netmap receiver
>
> Regards,
>
> Olivier
>

--=20
-----------------------------------------+-------------------------------
 Prof. Luigi RIZZO, rizzo@iet.unipi.it  . Dip. di Ing. dell'Informazione
 http://www.iet.unipi.it/~luigi/        . Universita` di Pisa
 TEL      +39-050-2211611               . via Diotisalvi 2
 Mobile   +39-338-6809875               . 56122 PISA (Italy)
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