Re: [lwip-users] How to optimize raw UDP performance

[Chris Strahm]

I assume this is an embedded design, and you are using 1G Enet?
What is your MCU, clock speed, and amount of RAM?
How are you doing the copy, with standard memcpy?
What is on the other side: PC, router, switch ?

Need a lot more details.

Chris.


> What are some good techniques for improving UDP performance in raw mode.
> Right now i'm getting approximately 82Mbits/sec. I would like to increase
> that to 150+ Mbits/sec which should be possible according to the
> documentation. I've tried increasing various buffer/memory sizes with very
> small effects. I also setup checksum offloading which surprisingly had no
> effect on performance.
>
> Does anyone know any other techniques worth trying? Why is the documented
> speed so much higher than what I'm getting?
>
> Thanks