Re: [lwip-users] TCP Dup ACKs and TCP Window full

[address@hidden]

On 10.04.2018 16:53, Adrian Figueroa wrote:
> [..]I think, this problem is not caused by Lwip itself but probably a 
> configuration error or some buffer that runs full. Maybe even a speed 
> issue of the processor.
I think it's a processor speed issue. Lost packets could be an lwIP 
configuration issue (have a look at 'lwip_stats.mem' and 
'lwip_stats.memp' to check the 'err' counters). But 'TCP window full' 
just means the PC sends faster than the device can handle.

I managed to run iPerf with ~100 mbit/s on an STM32 (with STM HAL 
drivers fixed/improved by myself), but I don't remember the CPU speed...
It could also be a driver issue, but I think the ChibiOS drivers are 
better than the STM HAL ones..

Simon