[c-nsp] Traffic Generators

[James Bensley]

On 21 October 2014 13:59, Saku Ytti <saku at ytti.fi> wrote:
> On (2014-10-20 14:34 -0400), f287cd76 at opayq.com wrote:
>
> Hey,
>
>> I'm looking for an opensource / free traffic generator that handles IMIX and other standard load tests.I'm using IPERF now, but this is simply a load gen.  No IMIX etc


So I have started playing with this, I think it should do we you want
(I have the same requirement);

http://traffic.comics.unina.it/software/ITG/

> When it comes to minimum size packets, I'm not aware of open source software
> that can congest 1GE port. Operating systems are not really tuned to do 1Gbps
> UDP streams on small packets. You can achieve that, even more, but you need to
> go quite low level, UDP socket you must forget immediately event with
> sendmmsg/recvmmsg. Raw sockets and modern CPU and you'll probably be able to
> reach 1Gbps per core, but I don't know software available that would be
> productized even to iperf level here, would love to hear about one.

Some open source software I am writing can do 1Gbps (and likely
beyond, I don't have any 10G NICs to test on, yet!), although it's for
testing at the Ethernet layer so not really applicable here;

https://github.com/jwbensley/Etherate

One of the main features I am working on now (as I'm still writing the
initial version) is loading the frame payload from file so that
payload data *could* be UDP but it's not really ment for testing
higher than Ethernet and/or MPLS level.

Cheers,
James.