Date: Thu, 19 Sep 2013 15:57:14 -0400 From: George Neville-Neil <gnn@neville-neil.com> To: Luigi Rizzo <rizzo@iet.unipi.it> Cc: freebsd-hackers@freebsd.org, Luigi Rizzo <luigi@freebsd.org>, FreeBSD Net <net@freebsd.org>, "freebsd-arch@freebsd.org Arch" <freebsd-arch@freebsd.org> Subject: Re: Network stack changes Message-ID: <B2D93B59-6D3E-463F-A82C-7CA1C6B9D62E@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 iEYEARECAAYFAlI7VxoACgkQYdh2wUQKM9Jk1wCfdVVHR42PXLlq/dg73BvFzzMz hakAn33mXvpLXemWDwab+2RZo1M0Fdmw =CKz7 -----END PGP SIGNATURE-----
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