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Re: [SCTP-Discussion] Best SCTP implementation for Embedded Linux


Chronological Thread 
  • From: Andreas Jungmaier <ajung AT exp-math.uni-essen.de>
  • To: "Vinod C Joseph" <vinod AT Corecess.com>
  • Cc: <discussion AT sctp.de>
  • Subject: Re: [SCTP-Discussion] Best SCTP implementation for Embedded Linux
  • Date: Sun Jun 15 16:22:29 2003
  • List-id: SCTP Discussions <discussion.sctp.de>
  • Organization: University Duisburg-Essen
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Vinod,

please see my comments below:


On Saturday 14 June 2003 06:42, Vinod C Joseph wrote:
> Dear Andreas
>
> Thanks for your detailed and explanatory mail. Let me explain what i am
> doing first.
>
> I am implementing signaling transport on IP for 3G Development. Our 3G
> Network Device( NodeB or RNC ) sends signaling messages on IP Transport.
>
> Assume i have made an implementation choice. ( Chosen some sctp socket
> library . eg. from www.sctp.de)
>
> I have written the client and server programs. The 3G Application just
> calls sendto() and recvfrom() calls to send data on SCTP.
>
> Would this suffice to manage the real-timeness ( soft real time suffices )
> of the needs of a wireless call setup. A NodeB handles, say 20 sectors.

Frankly, I do not have a clear idea of what that means in terms of
traffic load, what networking hardware you use, what your CPU
is able to handle, how many SCTP associations you expect etc.
Here, I can only give you a VERY rough performance figure. A laptop
(Pentium 3, 750 MHz) with a decent networking card (32 Bit bus)
is able to saturate a 100 MBit link (i.e. cause a more than 60% load
over a long period of time on a fast ethernet) with SCTPLIB only.
Naturally, the performance of SCTPLIB together with the socketapi-
library is slightly worse than SCTPLIB only, but for most cases
we tested it does quite well.

Anyway, the scenario you mention is also interesting for my university
group, research-wise. So, any details you can spare would be very nice
for us !

Best regards,
Andreas
- --
Dipl.-Ing. Andreas Jungmaier
Computer Networking Technology Group
University of Duisburg-Essen
http://www.exp-math.uni-essen.de/~ajung
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