[hpsdr] Call for Comments and Discussion - OzyII : To TCP/IP ornot to TCP/IP

[Henry Vredegoor]

Hi Jonathan,

I'm not sure from your post if you are talking about just TCP/IP processing
or SDR related processing too, regarding your remarks about the use of
Linux.
I think we are talking here just the performance of Linux for TCP/IP
communication and I assumed that a general Linux would fit the job, but not
sure about high volume processing performance with TCP/IP.
Ozy does as far as I know no SDR related processing.
Do you say that a better real time OS performance for just TCP/IP would be
needed?

Of course any FREE and OPEN (preferably Unix-like) OS would be OK as long as
it will do the TCP/IP communication, that was maybe not clear.

Anyway, still even more to read I guess... :-)

FPGA/C
I agree with you and think that the complexity/difficulty of an FPGA is only
justified for performance/timing reasons.

Henry.



> -----Original Message-----
> From: hpsdr-bounces at lists.openhpsdr.org 
> [mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of 
> Jonathan Naylor
> Sent: dinsdag 21 juli 2009 12:22
> To: High Performance SDR
> Subject: Re: [hpsdr] Call for Comments and Discussion - OzyII 
> : To TCP/IP ornot to TCP/IP
> 
> 
> ***** High Performance Software Defined Radio Discussion List *****
> 
> 
> I think I should reply here as I'm involved with an SDR that 
> uses TCP/IP as its transport (uWSDR) and uses a real CPU to 
> do the hard work.
> 
> This talk of Linux is the answer, now what is the question, 
> misses the point. This is almost as bad as people who say the 
> same about Windows, Linux is good, but is NOT the answer to 
> everything.
> 
> Linux even with real-time extensions is still only soft 
> real-time, whereas what you need is something even more 
> performant, small, simple and fast, preferably with 
> guaranteed performance. To this end, with our project, along 
> with using an ARM7 core from ATMEL, we used FreeRTOS 
> <http://www.freertos.org> which fits the bill nicely when 
> combined with the free TCP/IP package.
> 
> A further comment, you should also be aware that by going 
> with something using a standard language like C, you have a 
> better chance of getting more people involved with designing 
> and building the software whereas FPGAs count as deep magic 
> to most people, even amongst experienced developers.
> 
> Jonathan  G4KLX
> 
> 
>       
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