[clug] Poor PPPd performance

Martijn van Oosterhout kleptog at svana.org
Sun Mar 11 09:43:17 GMT 2007

On Sun, Mar 11, 2007 at 09:48:09PM +1300, Craig Bates wrote:
> I'm working on radio link project that runs embedded Linux on an ARM9 
> platform. Four PPP sessions originated on windows PCs go over the air 
> and are terminated on the ARM9.   The software that takes care of the 
> air link connects to the 4 PPPd processes via pseudo TTYs. So PPPd 
> thinks it is talking to a TTY and the other end looks like a file 
> descriptor that the airlink software reads and writes to. So PPP is 
> transported by a lower layer of software. Much like PPP is transported 
> by Ethernet or ATM in DSL.  I hope that makes sense...

Does the underlying protocol have flow control, like TCP? In that case
you should look at:


Hope this helps,
Martijn van Oosterhout   <kleptog at svana.org>   http://svana.org/kleptog/
> From each according to his ability. To each according to his ability to litigate.
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