Re: windows .... linux

From: Piero Codas <pcodas_at_uca.edu.py> · Date: Tue, 16 Mar 2004 12:46:50 +0000 (UTC)

thank you oliver. i apreciate you help. i believe the same think that you.
i've tried rtlinux...i think there is better than windows for we,
programers. but the problems is that linux is so speciffic. i don't know
with other pci drivers, but the ni_pci_mio have some problems...my point is
that i can't go to a industry and tell them that the board may have some
problems...i can make a driver for each board, but it's no easy. in the
other hand, windows is very friendly. maigt be expensive, but you win a
friendly operating system.

i'm making now test with venturcom, it has a rt library that it seems to
work...if i can make it work, i think it will be very usefull. for my real
time acquisition...

ok, thank you for all. keep in contact and sorry for my english...

piero codas
asunción-paraguay

----- Original Message -----
From: <Olivier.MUSSE_at_fr.thalesgroup.com>
To: <comedi_at_comedi.org>
Sent: Monday, March 15, 2004 6:21 AM
Subject: RE : windows .... linux

> Hi,
>
> No need to demonstrate that linux is better than windows in real time
> processing, this is sure it's better ;o)
> First I want to tell you that I think you should not use cygwin to work
real
> time since the real time scheduling policy defined under linux (FIFO and
RR)
> are not yet handled in cygwin. To my knowledge, the only way to have real
> time under windows is to use RTX from venturcom. I know that they are
> priority levels in windows thread (from 16 to 31 if I well remember) that
> should correspond to real time in the microsoft point of view (can not be
> compared to linux with RT patches or the new 2.6 kernel) but you can not
> obtain good time response without RTX.
> Since you are working with a NI board, there is another solution provided
by
> NI that consists in a computer (typically a PXI CPU and PXI acquisition
> board) working on a NI real time system (FSMlabs or something like that)
> making acquisition in real time and sending the results to a windows
server
> through ethernet or optical fiber. Look at NI web site for more details.
>
>
> Olivier MUSSE
>
>
>
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