Re: [lwip-devel] Some lwIP performances...

[Jonathan Larmour]

Frédéric BERNON wrote:
> I will commit this evenning the last https://savannah.nongnu.org/bugs/?19162 
> fix (I will send the last patch file before).
>
> During my tests, I have try to evaluate which max bandwidth I can get in 
> output, with UDP on socket layer. The test send full UDP datagrams (1458 bytes) 
> on a 100Mbps/Full Duplex Ethernet interface.
>
> With the patch I will propose, I can get ~90Mbps (~57Mbps with current CVS 
> release). Even, with some tips, I can even got... 98.2 Mbps!!! To get this last 
> 8.2Mbps, I have replace the pbuf_alloc(PBUF_TRANSPORT, 0, PBUF_REF) by a local 
> variable, and remove the pbuf_free. I will propose a next patch for that...
>
> Do you have some performance measures on your targets ?

I think to generate that much data you must have a much faster target with 
much more memory than I have! I can tell you now that the performance isn't 
quite so good with lwIP using 11KiB RAM :-).

Jifl
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