Re: [lwip-users] Ping time slowing down after some time

[Franck Jullien]

2014-07-29 19:37 GMT+02:00 Sylvain Rochet <address@hidden>:
> Hi,
>
> On Tue, Jul 29, 2014 at 10:28:08AM +0200, Franck Jullien wrote:
>>
>> Anyone has any idea about this ?
>
> DMA issue, lowlevel issue, port issue, or lwIP threading model not
> respected, as usual.
>
> I should script my MUA to put a generated answer for each mail about
> performance loss/packet loss/memory buffer corruption/any sign of a
> clear hard fault :-)
>
> Sylvain
>
> _______________________________________________
> lwip-users mailing list
> address@hidden
> https://lists.nongnu.org/mailman/listinfo/lwip-users

> If you are seeing a problem like this one it may be that you are servicing 
> one packet per interrupt. Then eventually multiple packets come in quick and 
> are received but only 1 interrupt is generated. You need to make sure you 
> service > every available packet when you get the interrupt instead of only 
> one.

Hi,

I figured that out myself after I posted here. Sorry for the noise...
I mean I know I need to debug the STM32F4 ethernet driver that I have
(which is part of the STM32F4 libraries, used by STM32Cube code
generator).
I'll keep you posted once I found this bug.

Best regards,

Franck.