Honored Contributor
Honored ContributorYes those measurements were on a 100MBps link.
I recently measured LWIP throughput on the standard reference design with the clock frequency raised to 70MHz and the figures are: UDP TX 820 kbytes/s UDP Rx 610 kbytes/s The software use was a very simple sockets application with the board sending frames as quickly as possible to a PC (or visa versa) and averaging how long it takes to send every 200kbytes. The problems here are that the lan91c111 does not have a particularly fast interface (the processor has to copy every word), and the memory used is SDRAM. It's hard to say if LWIP is suitable for your application without knowing the rates at which you wish to capture the data. The raw LWIP implementation is mainly suitable for use as a control channel. If you're looking to get rates which approach line rate you need to consider some hardware acceleration.
