[Click] Re?: Re: Kernel mode with a recent kernel

[Eddie Kohler]

Luigi,

As you know I think this is awesome.

Should we start working on a direct linkup between Click and netmap, rather 
than using libpcap as an intermediate?

Eddie


On 12/16/2011 10:32 AM, Luigi Rizzo wrote:
> On Fri, Dec 16, 2011 at 03:57:00PM +0100, Fabrice Schuler wrote:
>> Hi Eddy,
>>
>> Thanks for your answer.
>>
>> In a first time, we could probably only use kernel mode without polling, so patchless click could be fine. But on a longer run, I would say that yes, we will need polling mode.
>> I will try patchless mode in a first time, and will still try to work to use polling in a second time.
>
> If you are interested in polling because of performance, you should
> really consider using click-userspace with netmap (currently on
> FreeBSD, but linux support is really close now)
>
> http://info.iet.unipi.it/~luigi/netmap/
>
> In our tests it seems to beat in-kernel click by a factor of 2,
> for I/O intensive tasks (where polling makes the difference).
>
> http://info.iet.unipi.it/~luigi/netmap/20110729-rizzo-infocom.pdf
>
> cheers
> luigi
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