ipfw meets netmap (6.5 Mpps in userspace)

[Adrian Chadd]

Hi!

This stuff is very cool.

So why is it that we can do such ridiculous packet processing rates
via netmap and ipfw in userland but not in the traditional driver path
in-kernel?

(I think I know the answer, I'm just tossing it out there for discussion.)

THanks,



Adrian


On 13 August 2012 04:17, Luigi Rizzo <rizzo at iet.unipi.it> wrote:
> I just finished a netmap-enabled version of ipfw/dummynet, which
> runs in userspace and is able to process over 6 million packets per
> second (Mpps) with simple rulesets, and over 2.2 Mpps through
> dummynet pipes (tested on an i7-3400 connected to VALE ports;
> VALE is a software switch part of netmap).
> You can find it at
>
>         http://info.iet.unipi.it/~luigi/dummynet/#8696
>
> It works on FreeBSD and Linux.
>
> It even run on OSX, but there is no netmap support there;
> any interest, Apple ? In any case, it should be simple to
> adapt the network backend to talk to other devices.
>
> To run this you might want to use the most recent version of netmap,
> also recently updated so it works with recent kernels
>
>         http://info.iet.unipi.it/~luigi/netmap/
>
> (the code is already in FreeBSD HEAD).
>
> On passing, I have also updated the dummynet distributions
> for Linux and Windows, which should now compile for most
> recent version of Linux, and for Windows 32 and 64 bit:
>
>         http://info.iet.unipi.it/~luigi/dummynet/
>
> cheers
> luigi
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