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

[Zach Smith]

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.

-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Franck Jullien
Sent: Tuesday, July 29, 2014 2:28 AM
To: address@hidden
Subject: [lwip-users] Ping time slowing down after some time

Hi,

I an old post (by Steffen Wolfer) I found something that looks like my problem:

> On the other
> hand I noticed that ping times before slowing down are about 0.5 ms
> and after turn pretty exactly to 1000 or 2000 ms.

And Kieran Mansley replied:

> In the past I've seen that when a packet has been buffered but ignored.
> Receiving another packet causes an interrupt (or something) that
> results in the first packet being noticed, but the second packet is
> then buffered and ignored.  And so on.  Not sure if that's any help to you.

Anyone has any idea about this ?
I turned all debug warning on but nothing shows up when it slows down.

Franck.

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