Date: Thu, 19 Sep 2013 15:54:34 -0400 From: George Neville-Neil <gnn@neville-neil.com> To: Luigi Rizzo <rizzo@iet.unipi.it> 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>, "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>, =?iso-8859-1?Q?Olivier_Cochard-Labb=E9?= <olivier@cochard.me> Subject: Re: Network stack changes Message-ID: <6ACABEE8-2C0F-435C-8766-7010A8E13042@neville-neil.com> In-Reply-To: <CA%2BhQ2%2Bj%2BxYgW60YFuu=2moO-Y8xdxbNw-nj-Nf7VVGJgN9YdpA@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> <CA%2BhQ2%2Bj%2BxYgW60YFuu=2moO-Y8xdxbNw-nj-Nf7VVGJgN9YdpA@mail.gmail.com>
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[-- Attachment #1 --] On Sep 14, 2013, at 15:24 , Luigi Rizzo <rizzo@iet.unipi.it> wrote: > > > On Saturday, September 14, 2013, Olivier Cochard-Labbé <olivier@cochard.me> 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. > On the bandwidth side, can a modern sender with netmap really do a full 10G? I hate the cost of an IXIA but I have not been able to destroy our stack as effectively with anything else. Best, George [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org iEYEARECAAYFAlI7VnoACgkQYdh2wUQKM9JwnACfY/BgMc+68oW3u/1O5QAee5XK b5AAn1CgRTscID/9hbZd32Uz4L6V8Zoj =UieT -----END PGP SIGNATURE-----
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