Mike (mwester) wrote:
andrzej zaborowski wrote:
...
In terms of bottlenecks I'm sure the muxer is not one, neither is the
gsm module, if you want to use the usual serivces (GPRS/EDGE). I
think Harald did post some numbers from his experience in A780 project
where they actually have a working kernel-side TS0710 implementation
(written in a very A780 centric way unfortunately) including bit rates
at which the muxer potentially starts to be the bottleneck. Below
that it's just some wasted cycles from going to userspace and back
more than necessary.
The Linux serial driver is an abomination in itself (the only saving
grace is that it's largely compatible back to the days of the ASR33
teletype machine). IMO, if performance is the goal, we need to consider
a custom high-speed serial driver for the UART connected to the GSM, one
that gets rid of the overhead of the entire tty layer in the kernel.
I used to own an ASR33. How would I use it with my Neo if we accept your
suggestion?
:-)
M
p.s. it would have been quite a sight, an ASR33 connected via a Neo,
happily typing away with that wonderful sound only Teletypes can make...
