Re: [lwip-users] Significant overhead periodically during TCP receive transfers

[address@hidden]

Kieran Mansley wrote:
> > Thank you for any feedback on this.
> >     
>
> I don't know of any timers that have that periodicity in lwIP.
None.
> It might
> be useful to get a packet capture from just before the poor performance
> that we could look at in ethereal - that might give a clue about why the
> performance is poor.
>   
The first thing I would do is to check whether this is a real delay in 
your device or a simple TCP retransmission delay (i.e. the first 
response has a bad checksum or something like that and the PC has to 
wait for the device to retransmit).
I strongly suspect the latter.

Simon