[Click] How to make a fast multi-core UDP generator ??

[borkmann at iogearbox.net]

Quoting borkmann at iogearbox.net:
> Quoting shule ney <neyshule at gmail.com>:
>> Thanks borkmann，I'm wondering if 1,38Mio pps is the bottleneck speed of
>> 1Gbps NIC?? Since I only have 1Gbps NIC, if it's NIC‘s own problem, I think
>> I can't send faster than 1,38Mio pps. Great thanks for all your guys' help.
>
> I've seen some IXIA machines that were able to generate ~1,48M pps, but I
> assume that this was achieved with specialized hardware. I think/assume in
> software, you won't reach faster rates than the kernelspace pktgen.

Well, or maybe not. ;-) I just got an email with this:

trafgen -d p1p1 -c /etc/netsniff-ng/trafgen/nst_udp_pkt_18.txf -b 0
trafgen -d p1p1 -c /etc/netsniff-ng/trafgen/nst_udp_pkt_18.txf -b 1

Sustained rate at: 1.416mps...

>> 2011/10/13 <borkmann at iogearbox.net>
>>> You can also try the zero-copy traffic generator "trafgen" that is part of
>>> the netsniff-ng
>>> toolkit: http://netsniff-ng.org/ there is a Git repository, where you can
>>> get it from. On
>>> Gigabit Ethernet, I was able to generate about 1,25Mio 64 Byte pps from
>>> userspace
>>> (comp. pktgen from kernelspace: 1,38Mio pps). Other, fast packet
>>> generators, that run
>>> in userspace like Mausezahn (http://www.perihel.at/sec/mz/**) only reach
>>> about 800k pps.
>>>
>>> Quoting Nikolay Denev <ndenev at gmail.com>:
>>>
>>>> You can try the NETMAP image from here : http://info.iet.unipi.it/~**
>>>> luigi/netmap/ <http://info.iet.unipi.it/~luigi/netmap/>
>>>> With it I was able to generate 13-14Mpps (64byte packets) with a Intel
>>>> 10GigE card.
>>>>
>>>> On Oct 13, 2011, at 7:39 AM, shule ney wrote:
>>>>
>>>>  Hi there:
>>>>> I'm trying to make a UDP generator by using udpgen.click but single
>>>>> thread
>>>>> kernel click seems not fast enough(around 1.4Mpps with 64B packet), so I
>>>>> try
>>>>> to configure and run click as multi-threaded version, However it does not
>>>>> work for me when I'm using udpgen.click. once I type *click-install -t
>>>>> 2*,
>>>>> it tells me ignore the parameter, while other click configuration file
>>>>> works
>>>>> fine, I don't know why this udpgen.click can't work with multi-thread.
>>>>> Another question is which is the possible bottleneck, NIC or CPU? Thanks
>>>>> for
>>>>> your help.
>>>>>
>>>>> Best
>>>>> shule
>>>>> ______________________________**_________________
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>>>>>
>>>>
>>>>
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>>>
>>>
>>>
>>>
>>
>
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